Results 11 to 20 of about 2,473,227 (381)

Neural Activity in Quarks Language: Lattice Field Theory for a Network of Real Neurons [PDF]

Entropy (Basel), 2023
Brain–computer interfaces have seen extraordinary surges in developments in recent years, and a significant discrepancy now exists between the abundance of available data and the limited headway made in achieving a unified theoretical framework.
Giampiero Bardella, Simone Franchini, Liming Pan, Riccardo Balzan, S. Ramawat, E. Brunamonti, P. Pani, S. Ferraina   +7 more
semanticscholar   +2 more sources

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   +5 more sources

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

Variational structure of Luttinger–Ward formalism and bold diagrammatic expansion for Euclidean lattice field theory [PDF]

Proc Natl Acad Sci U S A, 2017
Significance Many-body perturbation theory is one of the pillars of quantum many-body physics and has been used extensively to predict ground-state and excited-state electronic properties of real materials in the past few decades.
Lin Lin, M. Lindsey
semanticscholar   +2 more sources

A Gentle Introduction to Lattice Field Theory [PDF]

Entropy
The principles of Lattice Field Theory (LFT), in particular Lattice Gauge Theory (LGT), are explained for a nonspecialist audience. We describe some of the successes of the program; we also discuss the relationship between LFT and Quantum Cellular ...
Erhard Seiler
doaj   +2 more sources

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
openaire   +9 more sources

Abelian monopole condensation in lattice gauge theories [PDF]

Nucl.Phys.Proc.Suppl. 83 (2000) 428-430, 1999
We investigate the dynamics of lattice gauge theories in an Abelian monopole background field. By means of the gauge-invariant lattice Schrodinger functional we study the Abelian monopole condensation in U(1) lattice gauge theory at zero temperature and in SU(3) lattice gauge theory at finite temperature.
't Hooft, Bali, Cea, Del Debbio, Iwasaki, L. Cosmai, Lüscher, Lüscher, Mandelstam, P. Cea, Rossi, Rossi, Singh, Suzuki   +13 more
arxiv   +4 more sources

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
openaire   +7 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
openaire   +6 more sources

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
openaire   +5 more sources