Results 11 to 20 of about 1,437,304 (362)

Field Theory on a Supersymmetric Lattice [PDF]

Communications in Mathematical Physics, 1997
A lattice-type regularization of the supersymmetric field theories on a supersphere is constructed by approximating the ring of scalar superfields by an integer-valued sequence of finite dimensional rings of supermatrices and by using the differencial calculus of non-commutative geometry.
P. Presnajder, C. Klimcik, Harald Grosse
openaire   +6 more sources

Graphene as a Lattice Field Theory [PDF]

Proceedings of 9th International Workshop on Critical Point and Onset of Deconfinement — PoS(CPOD2014), 2015
We introduce effective field theories for the electronic properties of graphene in terms of relativistic fermions propagating in 2+1 dimensions, and outline how strong inter-electron interactions may be modelled by numerical simulation of a lattice field theory.
Costas Strouthos, Simon Hands, Wes Armour   +2 more
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An alternative lattice field theory formulation inspired by lattice supersymmetry

Journal of High Energy Physics, 2017
We propose an unconventional formulation of lattice field theories which is quite general, although originally motivated by the quest of exact lattice supersymmetry. Two long standing problems have a solution in this context: 1) Each degree of freedom on
Alessandro D’Adda, Noboru Kawamoto, Jun Saito   +2 more
doaj   +3 more sources

Quantum field theory on a growing lattice [PDF]

Journal of High Energy Physics, 2004
We construct the classical and canonically quantized theories of a massless scalar field on a background lattice in which the number of points--and hence the number of modes--may grow in time. To obtain a well-defined theory certain restrictions must be imposed on the lattice.
Foster, Brendan Z., Jacobson, Ted
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Lattice supersymmetry and topological field theory [PDF]

Nuclear Physics B - Proceedings Supplements, 2003
It is known that certain theories with extended supersymmetry can be discretized in such a way as to preserve an exact fermionic symmetry. In the simplest model of this kind, we show that this residual supersymmetric invariance is actually a BRST symmetry associated with gauge fixing an underlying local shift symmetry. Furthermore, the starting lattice
D.B. Kaplan, E. Witten, I. Montvay, J. Bartels, J.M.F. Labastida, M. Beccaria, M.F.L. Golterman, N. Sakai, S. Catterall, S. Elitzur, S. Elitzur, Simon Catterall, T. Banks, V. de Alfaro, Y. Kikukawa   +14 more
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Future perspectives in lattice field theory [PDF]

Nuclear Physics B - Proceedings Supplements, 2000
I review some of the contributions which lattice simulations are likely to make during the next five years or so to the development of our understanding of particle physics. Particular emphasis is given to the evaluation of non-perturbative QCD effects in experimentally measurable amplitudes, and the corresponding extraction of fundamental parameters.
Aglietti, Alavi-Harati, Beneke, Bigi, Bigi, Brodsky, Brodsky, C.T. Sachrajda, Ciuchini, Ciuchini, Ciuchini, Del Debbio, Di Pierro, Efremov, Efremov, Jegelehner, Lacock, Maiani, Maiani, Martinelli, Mele, Neubert, Neubert, Sharpe, Wolfenstein   +24 more
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Progress in lattice field theory algorithms [PDF]

Nuclear Physics B - Proceedings Supplements, 1993
I present a summary of recent algorithmic developments for lattice field theories. In particular I give a pedagogical introduction to the new Multicanonical algorithm, and discuss the relation between the Hybrid Overrelaxation and Hybrid Monte Carlo algorithms.
A.D. Kennedy, Adler, Adler, Apostolakis, Apostolakis, Bathas, Ben-Av, Berg, Berg, Berg, Berg, Berg, Berg, Bernd, Bhanot, Billoire, Brown, Bunk, Caracciolo, Creutz, Creutz, Creutz, Decker, Edwards, Evertz, Evertz, Evertz, Flanigan, Grabenstein, Grabenstein, Graham, Grossmann, Grossmann, Gupta, Gupta, Gupta, Gupta, Gupta, Gupta, Gupta, Hasenbusch, Hasenbusch, Horowitz, Hulsebos, Hulsebos, Janke, Kalkreuter, Kennedy, Kennedy, Laursen, Lauwers, Lauwers, Mackenzie, Marinari, Martin, Mehlig, Meyer, Neal, Neuberger, Pendleton, Rossi, Rossi, Sexton, Sloan, Torrie, Vaccarino, Valleau, van der Sijs, Vyas, Vyas, Weingarten, Wolff, Wolff, Wolff   +73 more
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Quantum Finite Elements for Lattice Field Theory [PDF]

, 2016
Viable non-perturbative methods for lattice quantum field theories on curved manifolds are difficult. By adapting features from the traditional finite element methods (FEM) and Regge Calculus, a new simplicial lattice Quantum Finite Element (QFE ...
R. Brower, G. Fleming, A. Gasbarro, T. Raben, C. Tan, E. Weinberg   +5 more
semanticscholar   +3 more sources

STRUCTURE OF TOPOLOGICAL LATTICE FIELD THEORIES IN THREE DIMENSIONS [PDF]

, 1994
We construct and classify topological lattice field theories in three dimensions. After defining a general class of local lattice field theories, we impose invariance under arbitrary topology-preserving deformations of the underlying lattice, which are ...
Stephen-wei Chung, Masafumi Fukuma, Alfred D. Shapere   +2 more
openalex   +4 more sources

An Alternative Lattice Field Theory Formulation Inspired by Lattice Supersymmetry-Summary of the Formulation- [PDF]

EPJ Web of Conferences, 2018
We propose a lattice field theory formulation which overcomes some fundamental diffculties in realizing exact supersymmetry on the lattice. The Leibniz rule for the difference operator can be recovered by defining a new product on the lattice, the star ...
D’Adda Alessandro, Kawamoto Noboru, Saito Jun   +2 more
doaj   +3 more sources