Scholars@Duke
John Pearson

John Pearson

Assistant Professor of Neurobiology
Neurobiology
john.pearson@duke.edu
Duke Box 90999, Durham, NC 27708
Bryan Research Building, 101H, Durham, NC 27710

Selected Publications

Vocalization modulates the mouse auditory cortex even in the absence of hearing.

Journal Article Cell Rep · August 27, 2024 Vocal communication depends on distinguishing self-generated vocalizations from other sounds. Vocal motor corollary discharge (CD) signals are thought to support this ability by adaptively suppressing auditory cortical responses to auditory feedback. One c ... Full text Link to item Cite

Modeling confidence in causal judgments.

Journal Article J Exp Psychol Gen · August 2024 Counterfactual theories propose that people's capacity for causal judgment depends on their ability to consider alternative possibilities: The lightning strike caused the forest fire because had it not struck, the forest fire would not have ensued. To acco ... Full text Link to item Cite

Bayesian and Discriminative Models for Active Visual Perception across Saccades.

Journal Article eNeuro · July 2023 The brain interprets sensory inputs to guide behavior, but behavior itself disrupts sensory inputs. Perceiving a coherent world while acting in it constitutes active perception. For example, saccadic eye movements displace visual images on the retina and y ... Full text Link to item Cite

Generative models of birdsong learning link circadian fluctuations in song variability to changes in performance.

Journal Article PLoS Comput Biol · May 2023 Learning skilled behaviors requires intensive practice over days, months, or years. Behavioral hallmarks of practice include exploratory variation and long-term improvements, both of which can be impacted by circadian processes. During weeks of vocal pract ... Full text Link to item Cite

Social cognitive processes explain bias in juror decisions.

Journal Article Soc Cogn Affect Neurosci · February 23, 2023 Jury decisions are among the most consequential social decisions in which bias plays a notable role. While courts take measures to reduce the influence of non-evidentiary factors, jurors may still incorporate biases into their decisions. One common bias, c ... Full text Link to item Cite

Efficient coding, channel capacity, and the emergence of retinal mosaics.

Journal Article Advances in neural information processing systems · December 2022 Among the most striking features of retinal organization is the grouping of its output neurons, the retinal ganglion cells (RGCs), into a diversity of functional types. Each of these types exhibits a mosaic-like organization of receptive fields (RFs) that ... Cite

Neural Support for Contributions of Utility and Narrative Processing of Evidence in Juror Decision Making.

Journal Article J Neurosci · October 5, 2022 Efforts to explain complex human decisions have focused on competing theories emphasizing utility and narrative mechanisms. These are difficult to distinguish using behavior alone. Both narrative and utility theories have been proposed to explain juror dec ... Full text Link to item Cite

Confidence and gradation in causal judgment.

Journal Article Cognition · June 2022 When comparing the roles of the lightning strike and the dry climate in causing the forest fire, one might think that the lightning strike is more of a cause than the dry climate, or one might think that the lightning strike completely caused the fire whil ... Full text Open Access Link to item Cite

Measuring and Modeling Confidence in Human Causal Judgment

Conference Proceedings of the 44th Annual Meeting of the Cognitive Science Society: Cognitive Diversity, CogSci 2022 · January 1, 2022 The human capacity for causal judgment has long been thought to depend on an ability to consider counterfactual alternatives: the lightning strike caused the forest fire because had it not struck, the forest fire would not have ensued. To accommodate psych ... Cite

Bubblewrap: Online tiling and real-time flow prediction on neural manifolds.

Conference Adv Neural Inf Process Syst · December 2021 While most classic studies of function in experimental neuroscience have focused on the coding properties of individual neurons, recent developments in recording technologies have resulted in an increasing emphasis on the dynamics of neural populations. Th ... Link to item Cite

Neural dynamics underlying birdsong practice and performance.

Journal Article Nature · November 2021 Musical and athletic skills are learned and maintained through intensive practice to enable precise and reliable performance for an audience. Consequently, understanding such complex behaviours requires insight into how the brain functions during both prac ... Full text Link to item Cite

Scene statistics and noise determine the relative arrangement of receptive field mosaics.

Journal Article Proc Natl Acad Sci U S A · September 28, 2021 Many sensory systems utilize parallel ON and OFF pathways that signal stimulus increments and decrements, respectively. These pathways consist of ensembles or grids of ON and OFF detectors spanning sensory space. Yet, encoding by opponent pathways raises a ... Full text Link to item Cite

Bubblewrap: Online tiling and real-time flow prediction on neural manifolds

Journal Article · August 31, 2021 While most classic studies of function in experimental neuroscience have focused on the coding properties of individual neurons, recent developments in recording technologies have resulted in an increasing emphasis on the dynamics of neural populations. Th ... Link to item Cite

Data from: Low-dimensional learned feature spaces quantify individual and group differences in vocal repertoires

Dataset · May 24, 2021 Increases in the scale and complexity of behavioral data pose an increasing challenge for data analysis. A common strategy involves replacing entire behaviors with small numbers of handpicked, domain-specific features, but this approach suffers from severa ... Full text Cite

Low-dimensional learned feature spaces quantify individual and group differences in vocal repertoires.

Journal Article Elife · May 14, 2021 Increases in the scale and complexity of behavioral data pose an increasing challenge for data analysis. A common strategy involves replacing entire behaviors with small numbers of handpicked, domain-specific features, but this approach suffers from severa ... Full text Link to item Cite

Inter-mosaic coordination of retinal receptive fields.

Journal Article Nature · April 2021 The output of the retina is organized into many detector grids, called 'mosaics', that signal different features of visual scenes to the brain1-4. Each mosaic comprises a single type of retinal ganglion cell (RGC), whose receptive fields tile visual space. ... Full text Link to item Cite

Continuous decisions.

Journal Article Philos Trans R Soc Lond B Biol Sci · March 2021 Humans and other animals evolved to make decisions that extend over time with continuous and ever-changing options. Nonetheless, the academic study of decision-making is mostly limited to the simple case of choice between two options. Here, we advocate tha ... Full text Link to item Cite

Neurons in primate prefrontal cortex signal valuable social information during natural viewing.

Journal Article Philos Trans R Soc Lond B Biol Sci · March 2021 Information about social partners is innately valuable to primates. Decisions about which sources of information to consume are highly naturalistic but also complex and place unusually strong demands on the brain's decision network. In particular, both the ... Full text Link to item Cite

Attention-deficit/hyperactivity disorder and the explore/exploit trade-off.

Journal Article Neuropsychopharmacology · February 2021 The ability to maximize rewards and minimize the costs of obtaining them is vital to making advantageous explore/exploit decisions. Exploratory decisions are theorized to be greater among individuals with attention-deficit/hyperactivity disorder (ADHD), po ... Full text Link to item Cite

Machine learning prediction of neurocognitive impairment among people with HIV using clinical and multimodal magnetic resonance imaging data.

Journal Article J Neurovirol · February 2021 Diagnosis of HIV-associated neurocognitive impairment (NCI) continues to be a clinical challenge. The purpose of this study was to develop a prediction model for NCI among people with HIV using clinical- and magnetic resonance imaging (MRI)-derived feature ... Full text Link to item Cite

Distributions.jl: Definition and modeling of probability distributions in the JuliaStats ecosystem

Journal Article Journal of Statistical Software · January 1, 2021 Random variables and their distributions are a central part in many areas of statistical methods. The Distributions.jl package provides Julia users and developers tools for work-ing with probability distributions, leveraging Julia features for their intuit ... Full text Cite

improv: A software platform for real-time and adaptive neuroscience experiments

Journal Article · 2021 Current neuroscience research is often limited to testing predetermined hypotheses and post hoc analysis of already collected data. Adaptive experimental designs, in which modeling drives ongoing data collection and selects experimental manipulations, offe ... Full text Cite

The optimal spatial arrangement of ON and OFF receptive fields

Journal Article · 2021 Many sensory systems utilize parallel ON and OFF pathways that signal stimulus increments and decrements, respectively. These pathways consist of ensembles or grids of ON and OFF detectors spanning sensory space. Yet encoding by opponent pathways raises a ... Full text Cite

Deep Generative Analysis for Task-Based Functional MRI Experiments

Journal Article · 2021 While functional magnetic resonance imaging (fMRI) remains one of the most widespread and important methods in basic and clinical neuroscience, the data it produces—time series of brain volumes—continue to pose daunting analysis challenges. The current sta ... Full text Cite

Encoding of odors by mammalian olfactory receptors

Journal Article · 2021 Identified ligands for > 500 mouse ORs ORs are specifically tuned towards individual odorants and their molecular properties Odor molecular properties are informative of odor responses Predictive modeling and convergent evolution analyses suggest specific ... Full text Cite

Deep Generative Analysis for Task-Based Functional MRI Experiments

Conference Proceedings of Machine Learning Research · January 1, 2021 While functional magnetic resonance imaging (fMRI) remains one of the most widespread and important methods in basic and clinical neuroscience, the data it produces—time series of brain volumes—continue to pose daunting analysis challenges. The current sta ... Cite

Circuit and synaptic organization of forebrain-to-midbrain pathways that promote and suppress vocalization.

Journal Article Elife · December 29, 2020 Animals vocalize only in certain behavioral contexts, but the circuits and synapses through which forebrain neurons trigger or suppress vocalization remain unknown. Here, we used transsynaptic tracing to identify two populations of inhibitory neurons that ... Full text Link to item Cite

Monkeys and humans implement causal inference to simultaneously localize auditory and visual stimuli.

Journal Article J Neurophysiol · September 1, 2020 The environment is sampled by multiple senses, which are woven together to produce a unified perceptual state. However, optimally unifying such signals requires assigning particular signals to the same or different underlying objects or events. Many prior ... Full text Link to item Cite

Online neural connectivity estimation with ensemble stimulation

Journal Article · July 27, 2020 One of the primary goals of systems neuroscience is to relate the structure of neural circuits to their function, yet patterns of connectivity are difficult to establish when recording from large populations in behaving organisms. Many previous approaches ... Link to item Cite

Dorsolateral and dorsomedial prefrontal cortex track distinct properties of dynamic social behavior.

Journal Article Soc Cogn Affect Neurosci · June 23, 2020 Understanding how humans make competitive decisions in complex environments is a key goal of decision neuroscience. Typical experimental paradigms constrain behavioral complexity (e.g. choices in discrete-play games), and thus, the underlying neural mechan ... Full text Link to item Cite

Online neural connectivity estimation with noisy group testing

Conference Advances in Neural Information Processing Systems · January 1, 2020 One of the primary goals of systems neuroscience is to relate the structure of neural circuits to their function, yet patterns of connectivity are difficult to establish when recording from large populations in behaving organisms. Many previous approaches ... Cite

Cognitive bots and algorithmic humans: toward a shared understanding of social intelligence

Journal Article Current Opinion in Behavioral Sciences · October 1, 2019 Questions of social behavior are simultaneously among the most fundamental in neuroscience and the most challenging in artificial intelligence. Yet despite decades of work, a unified perspective from the cognitive and computational approaches to the proble ... Full text Cite

Bayesian nonparametric models characterize instantaneous strategies in a competitive dynamic game.

Journal Article Nat Commun · April 18, 2019 Previous studies of strategic social interaction in game theory have predominantly used games with clearly-defined turns and limited choices. Yet, most real-world social behaviors involve dynamic, coevolving decisions by interacting agents, which poses cha ... Full text Link to item Cite

Latent goal models for dynamic strategic interaction.

Journal Article PLoS Comput Biol · March 2019 Understanding the principles by which agents interact with both complex environments and each other is a key goal of decision neuroscience. However, most previous studies have used experimental paradigms in which choices are discrete (and few), play is sta ... Full text Link to item Cite

Monkeys and Humans Implement Causal Inference to Simultaneously Localize Auditory and Visual Stimuli

Journal Article · 2019 The environment is sampled by multiple senses, which are woven together to produce a unified perceptual state. However, optimally unifying such signals requires assigning particular signals to the same or different underlying objects or events. Many prior ... Full text Cite

Low-dimensional learned feature spaces quantify individual and group differences in vocal repertoires

Journal Article · 2019 SUMMARY Increases in the scale and complexity of behavioral data pose an increasing challenge for data analysis. A common strategy involves replacing entire behaviors with small numbers of handpicked, domain-specific features, but this approach su ... Full text Cite

Modelling the effects of crime type and evidence on judgments about guilt.

Journal Article Nat Hum Behav · November 2018 Concerns over wrongful convictions have spurred an increased focus on understanding criminal justice decision-making. This study describes an experimental approach that complements conventional mock-juror experiments and case studies by providing a rapid, ... Open Access Link to item Cite

Feedback-Based Learning in Aging: Contributions and Trajectories of Change in Striatal and Hippocampal Systems.

Journal Article J Neurosci · September 26, 2018 The striatum supports learning from immediate feedback by coding prediction errors (PEs), whereas the hippocampus (HC) plays a parallel role in learning from delayed feedback. Both regions show evidence of decline in human aging, but behavioral research su ... Full text Link to item Cite

Queuing cues in rapid cortical processing.

Journal Article Nat Hum Behav · September 2018 Full text Link to item Cite

Bayesian Nonparametric Models Characterize Instantaneous Strategies in a Competitive Dynamic Game

Journal Article · August 5, 2018 AbstractPrevious approaches to investigating strategic social interaction in game theory have predominantly used games with clearly-defined turns and limited choices. However, most real-world social behaviors involve dynami ... Full text Cite

A Primer on Foraging and the Explore/Exploit Trade-Off for Psychiatry Research.

Journal Article Neuropsychopharmacology · September 2017 Foraging is a fundamental behavior, and many types of animals appear to have solved foraging problems using a shared set of mechanisms. Perhaps the most common foraging problem is the choice between exploiting a familiar option for a known reward and explo ... Full text Link to item Cite

Decoding working memory content from attentional biases.

Journal Article Psychon Bull Rev · August 2017 What we are currently thinking influences where we attend. The finding that active maintenance of visual items in working memory (WM) biases attention toward memory-matching objects-even when WM content is irrelevant for attentional goals-suggests a tight ... Full text Link to item Cite

Neuron's eye view: Inferring features of complex stimuli from neural responses.

Journal Article PLoS Comput Biol · August 2017 Experiments that study neural encoding of stimuli at the level of individual neurons typically choose a small set of features present in the world-contrast and luminance for vision, pitch and intensity for sound-and assemble a stimulus set that systematica ... Full text Link to item Cite

A Goal-Based Movement Model for Continuous Multi-Agent Tasks

Journal Article · February 23, 2017 Despite increasing attention paid to the need for fast, scalable methods to analyze next-generation neuroscience data, comparatively little attention has been paid to the development of similar methods for behavioral analysis. Just as the volume and comple ... Link to item Cite

Local Fields in Human Subthalamic Nucleus Track the Lead-up to Impulsive Choices.

Journal Article Front Neurosci · 2017 The ability to adaptively minimize not only motor but cognitive symptoms of neurological diseases, such as Parkinson's Disease (PD) and obsessive-compulsive disorder (OCD), is a primary goal of next-generation deep brain stimulation (DBS) devices. On the b ... Full text Link to item Cite

Altruistic traits are predicted by neural responses to monetary outcomes for self vs charity.

Journal Article Soc Cogn Affect Neurosci · June 2016 Human altruism is often expressed through charitable donation-supporting a cause that benefits others in society, at cost to oneself. The underlying mechanisms of this other-regarding behavior remain imperfectly understood. By recording event-related-poten ... Full text Link to item Cite

Dopamine: Context and counterfactuals.

Journal Article Proc Natl Acad Sci U S A · January 5, 2016 Full text Link to item Cite

Neural mechanisms of social decision-making in the primate amygdala.

Journal Article Proc Natl Acad Sci U S A · December 29, 2015 Social decisions require evaluation of costs and benefits to oneself and others. Long associated with emotion and vigilance, the amygdala has recently been implicated in both decision-making and social behavior. The amygdala signals reward and punishment, ... Full text Link to item Cite

Suboptimal foraging behavior: a new perspective on gambling.

Journal Article Behav Neurosci · October 2015 Why do people gamble? Conventional views hold that gambling may be motivated by irrational beliefs, risk-seeking, impulsive temperament, or dysfunction within the same reward circuitry affected by drugs of abuse. An alternate, unexplored perspective is tha ... Full text Link to item Cite

Mind-reading without the scanner: Behavioural decoding of working memory content

Journal Article Visual Cognition · August 9, 2015 Sophisticated machine learning algorithms have been successfully applied to functional neuroimaging data in order to characterize internal cognitive states. But is it possible to “mind-read” without the scanner? Capitalizing on the robust finding that the ... Full text Cite

Smoking automaticity and tolerance moderate brain activation during explore-exploit behavior.

Journal Article Psychiatry Res · December 30, 2014 The adaptive trade-off between exploration and exploitation is a key component in models of reinforcement learning. Over the past decade, these models have been applied to the study of reward-seeking behavior. Drugs of addiction induce reward-seeking behav ... Full text Link to item Cite

Decision making: the neuroethological turn.

Journal Article Neuron · June 4, 2014 Neuroeconomics applies models from economics and psychology to inform neurobiological studies of choice. This approach has revealed neural signatures of concepts like value, risk, and ambiguity, which are known to influence decision making. Such observatio ... Full text Link to item Cite

Lemurs and macaques show similar numerical sensitivity.

Journal Article Anim Cogn · May 2014 We investigated the precision of the approximate number system (ANS) in three lemur species (Lemur catta, Eulemur mongoz, and Eulemur macaco flavifrons), one Old World monkey species (Macaca mulatta) and humans (Homo sapiens). In Experiment 1, four individ ... Full text Link to item Cite

Pupil size and social vigilance in rhesus macaques.

Journal Article Front Neurosci · 2014 Complex natural environments favor the dynamic alignment of neural processing between goal-relevant stimuli and conflicting but biologically salient stimuli like social competitors or predators. The biological mechanisms that regulate dynamic changes in vi ... Full text Link to item Cite

Differential reward learning for self and others predicts self-reported altruism.

Journal Article PLoS One · 2014 In social environments, decisions not only determine rewards for oneself but also for others. However, individual differences in pro-social behaviors have been typically studied through self-report. We developed a decision-making paradigm in which particip ... Full text Link to item Cite

Postreward delays and systematic biases in measures of animal temporal discounting.

Journal Article Proc Natl Acad Sci U S A · September 17, 2013 Intertemporal choice tasks, which pit smaller/sooner rewards against larger/later ones, are frequently used to study time preferences and, by extension, impulsivity and self-control. When used in animals, many trials are strung together in sequence and an ... Full text Link to item Cite

Dopamine: burning the candle at both ends.

Journal Article Neuron · September 4, 2013 Dopamine neurons are well known for signaling reward-prediction errors. In this issue, Matsumoto and Takada (2013) show that some dopamine neurons also signal salient events during progression through a visual search task requiring working memory and susta ... Full text Link to item Cite

Through their eyes: selective attention in peahens during courtship.

Journal Article J Exp Biol · August 15, 2013 Conspicuous, multicomponent ornamentation in male animals can be favored by female mate choice but we know little about the cognitive processes females use to evaluate these traits. Sexual selection may favor attention mechanisms allowing the choosing fema ... Full text Link to item Cite

Neuroethology of primate social behavior.

Journal Article Proc Natl Acad Sci U S A · June 18, 2013 A neuroethological approach to human and nonhuman primate behavior and cognition predicts biological specializations for social life. Evidence reviewed here indicates that ancestral mechanisms are often duplicated, repurposed, and differentially regulated ... Full text Link to item Cite

Rapid brain responses independently predict gain maximization and loss minimization during economic decision making.

Journal Article J Neurosci · April 17, 2013 Success in many decision-making scenarios depends on the ability to maximize gains and minimize losses. Even if an agent knows which cues lead to gains and which lead to losses, that agent could still make choices yielding suboptimal rewards. Here, by anal ... Full text Open Access Link to item Cite

Smoking and the bandit: a preliminary study of smoker and nonsmoker differences in exploratory behavior measured with a multiarmed bandit task.

Journal Article Exp Clin Psychopharmacol · February 2013 Advantageous decision-making is an adaptive trade-off between exploring alternatives and exploiting the most rewarding option. This trade-off may be related to maladaptive decision-making associated with nicotine dependence; however, explore/exploit behavi ... Full text Link to item Cite

Change detection, multiple controllers, and dynamic environments: insights from the brain.

Journal Article J Exp Anal Behav · January 2013 Foundational studies in decision making focused on behavior as the most accessible and reliable data on which to build theories of choice. More recent work, however, has incorporated neural data to provide insights unavailable from behavior alone. Among ot ... Full text Link to item Cite

Individual differences in social information gathering revealed through Bayesian hierarchical models.

Journal Article Front Neurosci · 2013 As studies of the neural circuits underlying choice expand to include more complicated behaviors, analysis of behaviors elicited in laboratory paradigms has grown increasingly difficult. Social behaviors present a particular challenge, since inter- and int ... Full text Link to item Cite

Neuroethology of decision-making.

Journal Article Curr Opin Neurobiol · December 2012 A neuroethological approach to decision-making considers the effect of evolutionary pressures on neural circuits mediating choice. In this view, decision systems are expected to enhance fitness with respect to the local environment, and particularly effici ... Full text Link to item Cite

Dynamic decision making in the brain.

Journal Article Nat Neurosci · February 24, 2012 How do we make decisions? A study uses MEG to provide the spatial as well as the temporal resolution needed to answer this question, together with computational modeling, which allows for complex non-linear decision models. This work helps resolve some of ... Full text Link to item Cite

Neuronal basis of sequential foraging decisions in a patchy environment.

Journal Article Nat Neurosci · June 5, 2011 Deciding when to leave a depleting resource to exploit another is a fundamental problem for all decision makers. The neuronal mechanisms mediating patch-leaving decisions remain unknown. We found that neurons in primate (Macaca mulatta) dorsal anterior cin ... Full text Link to item Cite

Posterior cingulate cortex: adapting behavior to a changing world.

Journal Article Trends Cogn Sci · April 2011 When has the world changed enough to warrant a new approach? The answer depends on current needs, behavioral flexibility and prior knowledge about the environment. Formal approaches solve the problem by integrating the recent history of rewards, errors, un ... Full text Link to item Cite

Surprise signals in anterior cingulate cortex: neuronal encoding of unsigned reward prediction errors driving adjustment in behavior.

Journal Article J Neurosci · March 16, 2011 In attentional models of learning, associations between actions and subsequent rewards are stronger when outcomes are surprising, regardless of their valence. Despite the behavioral evidence that surprising outcomes drive learning, neural correlates of uns ... Full text Link to item Cite

A physiologically-inspired model of numerical classification based on graded stimulus coding.

Journal Article Frontiers in behavioral neuroscience · January 2010 In most natural decision contexts, the process of selecting among competing actions takes place in the presence of informative, but potentially ambiguous, stimuli. Decisions about magnitudes - quantities like time, length, and brightness that are linearly ... Full text Cite

Explicit information reduces discounting behavior in monkeys.

Journal Article Front Psychol · 2010 Animals are notoriously impulsive in common laboratory experiments, preferring smaller, sooner rewards to larger, delayed rewards even when this reduces average reward rates. By contrast, the same animals often engage in natural behaviors that require extr ... Full text Link to item Cite

Neurons in posterior cingulate cortex signal exploratory decisions in a dynamic multioption choice task.

Journal Article Curr Biol · September 29, 2009 In dynamic environments, adaptive behavior requires striking a balance between harvesting currently available rewards (exploitation) and gathering information about alternative options (exploration). Such strategic decisions should incorporate not only rec ... Full text Link to item Cite

Confidence and corrections: how we make and un-make up our minds.

Journal Article Neuron · September 24, 2009 Single neurons in several brain areas intervening between sensation and action signal the accumulation of sensory evidence favoring a particular behavioral response. Two new studies show that these same neurons encode decision confidence and that decision ... Full text Link to item Cite

Fictive reward signals in the anterior cingulate cortex.

Journal Article Science · May 15, 2009 The neural mechanisms supporting the ability to recognize and respond to fictive outcomes, outcomes of actions that one has not taken, remain obscure. We hypothesized that neurons in the anterior cingulate cortex (ACC), which monitors the consequences of a ... Full text Link to item Cite

Neuroethology of reward and decision making.

Journal Article Philos Trans R Soc Lond B Biol Sci · December 12, 2008 Ethology, the evolutionary science of behaviour, assumes that natural selection shapes behaviour and its neural substrates in humans and other animals. In this view, the nervous system of any animal comprises a suite of morphological and behavioural adapta ... Full text Link to item Cite

Tracing the string: BMN correspondence at finite J2/N

Journal Article Journal of High Energy Physics · May 1, 2003 Employing the string bit formalism of [18], we identify the basis transformation that relates BMN operators in N = 4 gauge theory to string states in the dual string field theory at finite g2 = J2/N. In this basis, the supercharge truncates at linear order ... Full text Cite

Brane/flux annihilation and the string dual of a non-supersymmetric field theory

Journal Article Journal of High Energy Physics · June 11, 2002 Full text Cite

Brane/flux annihilation and the string dual of a non-supersymmetric field theory

Journal Article Journal of High Energy Physics · June 1, 2002 We consider the dynamics of p anti-D3 branes inside the Klebanov-Strassler geometry, the deformed conifold with M units of RR 3-form flux around the S 3. We find that for p ≪ M the system relaxes to a nonsupersymmetric NS 5-brane "giant graviton" configura ... Full text Cite

Semiclassical corrections to the oscillation frequencies of a trapped bose-einstein condensate

Journal Article Physical Review Letters · January 1, 1999 The oscillation frequencies of collective excitations of a trapped Bose-Einstein condensate, when calculated in the mean-field approximation and in the Thomas-Fermi limit, are independent of the scattering length a. We calculate the leading corrections to ... Full text Cite