Results 11 to 20 of about 357,046 (309)
Variational Approximations for Correlation Functions in Quantum Field Theories [PDF]
Annals of Physics, 1999 60 pages, Latex, to be published in Annals of ...
Cécile Martin
openalex +5 more sources
Aspects of quantum information in finite density field theory [PDF]
Journal of High Energy Physics, 2021 We study different aspects of quantum field theory at finite density using methods from quantum information theory. For simplicity we focus on massive Dirac fermions with nonzero chemical potential, and work in 1 + 1 space-time dimensions.
Lucas Daguerre +3 more
doaj +2 more sources
An inverse problem in quantum field theory and canonical correlation functions [PDF]
Journal of the Mathematical Society of Japan, 1999 In this paper, we treat a quantum harmonic oscillator in thermal equilibrium with any systems in certain classes of bosons with infinitely many degrees of freedom. We describe the following results: (i) when a canonical correlation function is given, we so reconstmct a Hamiltonian by the rotating wave approximation from it that the Hamiltonian restores
Masao Hirokawa
openalex +4 more sources
Rate of cluster decomposition via Fermat-Steiner point [PDF]
Journal of High Energy Physics, 2019 In quantum field theory with a mass gap correlation function between two spatially separated operators decays exponentially with the distance. This fundamental result immediately implies an exponential suppression of all higher point correlation ...
Alexander Avdoshkin +3 more
doaj +4 more sources
, 2023 29 Pages and 4 Figures. Version 2 contains a minor correction to Section 3.
Olalla A. Castro-Alvaredo +2 more
openalex +4 more sources
Convergent momentum-space OPE and bootstrap equations in conformal field theory [PDF]
Journal of High Energy Physics, 2020 General principles of quantum field theory imply that there exists an operator product expansion (OPE) for Wightman functions in Minkowski momentum space that converges for arbitrary kinematics.
Marc Gillioz +3 more
doaj +2 more sources
Correlation Functions in 2-Dimensional Integrable Quantum Field Theories [PDF]
, 1993 In this talk I discuss the form factor approach used to compute correlation functions of integrable models in two dimensions. The Sinh-Gordon model is our basic example. Using Watson's and the recursive equations satisfied by matrix elements of local operators, I present the computation of the form factors of the elementary field $ (x)$ and the stress-
Giuseppe Mussardo
openalex +5 more sources
Spectral Representation of Correlation Functions in two-dimensional Quantum Field Theories
, 1994 9 pages, ISAS/60/94 ...
Giuseppe Mussardo
openalex +4 more sources
Correlation functions in conformal Toda field theory I [PDF]
, 2007 Two-dimensional sl(n) quantum Toda field theory on a sphere is considered. This theory provides an important example of conformal field theory with higher spin symmetry.
V. Fateev, A. Litvinov
semanticscholar +13 more sources
, 1996 renaming the article (adding algebro-geometric title)
A. L. Gorodentsev, Maxim Leyenson
+6 more sources