Generating a mass gap using Feynman diagrams in an asymptotically free theory
Conference Paper
© The Authors, published by EDP Sciences, 2018. Using the example of a two dimensional four-fermion lattice field theory, we show that Feynman diagrams can generate a mass gap in a theory with massless fermions that interact via a marginally relevant coupling. We show this by introducing an infrared cutoff that makes the perturbation series for the partition function convergent. We use a Monte Carlo approach to sample sufficiently high orders of diagrams and thus expose the presence of the mass gap.
Full Text
Duke Authors
Cited Authors
- Ayyar, V; Chandrasekharan, S
Published Date
- March 26, 2018
Published In
Volume / Issue
- 175 /
Electronic International Standard Serial Number (EISSN)
- 2100-014X
International Standard Serial Number (ISSN)
- 2101-6275
Digital Object Identifier (DOI)
- 10.1051/epjconf/201817511010
Citation Source
- Scopus