Journal ArticlePhysical Review B - Condensed Matter and Materials Physics · December 21, 2006
The critical scaling of the helicity modulus of the classical O(3) 3d Heisenberg ferromagnet is studied directly. Monte Carlo methods that impose either an antiperiodic boundary condition or a finite twist of definite handedness across otherwise periodic b ...
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ConferenceProceedings of 4th Annual Linux Showcase and Conference 2000, ALS 2000 · January 1, 2000
At this point in time the beowulf (and other related ompute cluster) architectures has come of age in Linux. Few indeed are those in any realm of technical computing that are unaware of the fact that one an assemble a collection of commodity off the shelf ...
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Journal ArticleInternational Journal of Quantum Chemistry · January 1, 1993
An approximate numerical method of solving the Generalized Master Equation for a many‐body problem is presented, with examples of its application. This method involves the construction from the full Hamiltonian (of the system plus the “bath”) of a set of u ...
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Journal ArticleJournal of Physics B: Atomic, Molecular and Optical Physics · December 1, 1988
The author presents a derivation of generalised multiple scattering (MS) theory for finite systems such as molecules, atomic clusters and nuclei. It eliminates the need for the muffin-tin approximation (MTA) in the MS methods commonly used in quantum chemi ...
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Journal ArticleInternational Journal of Quantum Chemistry · January 1, 1984
A generalized non‐muffin‐tin band structure method is presented in the context of multiple scattering off of the Wigner–Seitz cell. This technique has the following desirable features: it is formally exact and rapidly convergent; it preserves the separatio ...
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Journal ArticlePhysical Review B · January 1, 1983
A new way of applying the non-spherically-symmetric phase-functional method of Williams and van Morgan to the band-structure problem is derived that results in a generalized (non-muffin-tin) Green's-function band theory that is variationally stationary and ...
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Journal ArticleInternational Journal of Engineering Science · January 1, 1983
A new technique for the detection of microcrack precursors and for the study of the dynamics of crack propagation is proposed. The technique uses laser Raman scattering off of adsorbed surface species to detect microcrack precursors via variations in the R ...
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