Results 21 to 30 of about 2,293,822 (285)

Field space entanglement entropy, zero modes and Lifshitz models

open access: yesPhysics Letters B, 2017
The field space entanglement entropy of a quantum field theory is obtained by integrating out a subset of its fields. We study an interacting quantum field theory consisting of massless scalar fields on a closed compact manifold M.
Helmuth Huffel, Gerald Kelnhofer
doaj   +1 more source

On the Overlap Prescription for Lattice Regularization of Chiral Fermions [PDF]

open access: yes, 1995
Feynman rules for the vacuum amplitude of fermions coupled to external gauge and Higgs fields in a domain wall lattice model are derived using time--dependent perturbation theory.
't Hooft   +31 more
core   +3 more sources

Information model of economy

open access: yesCondensed Matter Physics, 2006
A new stochastic model of economy is developed that takes into account the choice of consumers are the dependent random fields. Axioms of such a model are formulated.
N.S.Gonchar
doaj   +1 more source

On gauge-invariant deformation of reducible gauge theories

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
New method for construction of gauge-invariant deformed theory from an initial gauge theory proposed in our previous papers (Buchbinder and Lavrov in JHEP 06:854, 2021; Buchbinder and Lavrov in Eur Phys J C 81:856, 2021) for closed/open gauge algebras is
P. M. Lavrov
doaj   +1 more source

Decoupling structure of the principal sigma model-Maxwell interactions [PDF]

open access: yes, 2008
The principal sigma model and Abelian gauge fields coupling is studied. By expressing the first-order formulation of the gauge field equations an implicit on-shell scalar-gauge field decoupling structure is revealed.
Cremmer   +13 more
core   +2 more sources

A spin-statistics theorem for quantum fields on curved spacetime manifolds in a generally covariant framework [PDF]

open access: yes, 2001
A model-independent, locally generally covariant formulation of quantum field theory over four-dimensional, globally hyperbolic spacetimes will be given which generalizes similar, previous approaches.
Verch, Rainer
core   +2 more sources

PROBABILISTIC MODEL OF REGGEON FIELD THEORY [PDF]

open access: yes, 2002
The stochastic model of classical system of particles (partons), which dynamics includes random walk in plane as well as processes of death, splitting, annihilation and fusion of partons, is considered. A set of equations for multiparticle distribution functions for this system can be described in terms of diagrams of the Reggeon Field Theory (RFT ...
openaire   +2 more sources

Extended Gauge Theories in Euclidean Space with Higher Spin Fields [PDF]

open access: yes, 1999
The extended Yang-Mills gauge theory in Euclidean space is a renormalizable (by power counting) gauge theory describing a local interacting theory of scalar, vector, and tensor gauge fields (with maximum spin 2).
Aragone   +37 more
core   +2 more sources

Scale without conformal invariance in membrane theory

open access: yesNuclear Physics B, 2021
We investigate the relation between dilatation and conformal symmetries in the statistical mechanics of flexible crystalline membranes. We analyze, in particular, a well-known model which describes the fluctuations of a continuum elastic medium embedded ...
Achille Mauri, Mikhail I. Katsnelson
doaj   +1 more source

Nonadiabatic nonlinear optics and quantum geometry — Application to the twisted Schwinger effect

open access: yesSciPost Physics, 2021
We study the tunneling mechanism of nonlinear optical processes in solids induced by strong coherent laser fields. The theory is based on an extension of the Landau-Zener model with nonadiabatic geometric effects.
Shintaro Takayoshi, Jianda Wu, Takashi Oka
doaj   +1 more source

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