Results 21 to 30 of about 14,043,509 (296)
Thermal field theory and infinite statistics [PDF]
Nuclear Physics B, 1993 We construct a quantum thermal field theory for scalar particles in the case of infinite statistics. The extension is provided by working out the Fock space realization of a "quantum algebra", and by identifying the hamiltonian as the energy operator.
Altherr, T., Grandou, T.
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THERMAL RENORMALONS IN SCALAR FIELD THEORY [PDF]
Modern Physics Letters A, 2000 In the framework of the scalar theory gϕ4, we explore the occurrence of thermal renormalons, i.e. temperature-dependent singularities in the Borel plane. The discussion of a particular renormalon type diagram at finite temperature, using Thermofield Dynamics, allows us to establish that these singularities actually get a temperature dependence.
Loewe, M., Valenzuela, C.
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Nonequilibrium Quantum Field Theory [PDF]
, 2009 Bringing together the key ideas from nonequilibrium statistical mechanics and powerful methodology from quantum field theory, this 2008 book captures the essence of nonequilibrium quantum field theory.
Calzetta, Esteban A., Hu, Bei-Lok B.
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Thermalization of Strongly Coupled Field Theories
Physical Review Letters, 2011 4 pages, 4 figures + 1 figure (v2), v2: new results added on entanglement entropy in 4d field theories and on entropy growth rate, v3: published ...
Balasubramanian V +9 more
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On thermalization in classical scalar field theory [PDF]
Nuclear Physics B, 2000 Thermalization of classical fields is investigated in a ϕ^4 scalar field theory in 1+1 dimensions, discretized on a lattice. We numerically integrate the classical equations of motion using initial conditions sampled from various nonequilibrium probability distributions.
Aarts, Gert +2 more
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THERMAL FIELD THEORY IN NON-EQUILIBRIUM STATES [PDF]
International Journal of Modern Physics B, 1996 Conventional transport theory is not really applicable to nonequilibrium systems which exhibit strong quantum effects. We present two different approaches to overcome this problem. Firstly we point out how transport equations may be derived that incorporate a nontrivial spectral function as a typical quantum effect, and test this approach in a toy ...
Henning, P. A. +2 more
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Nuclearity and Thermal States in Conformal Field Theory [PDF]
Communications in Mathematical Physics, 2006 We introduce a new type of spectral density condition, that we call L^2-nuclearity. One formulation concerns lowest weight unitary representations of SL(2,R) and turns out to be equivalent to the existence of characters. A second formulation concerns inclusions of local observable von Neumann algebras in Quantum Field Theory.
Buchholz, D, D'Antoni, C, LONGO, ROBERTO
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Perturbative nonequilibrium thermal field theory [PDF]
Physical Review D, 2013 We present a new perturbative formulation of non-equilibrium thermal field theory, based upon non-homogeneous free propagators and time-dependent vertices. Our approach to non-equilibrium dynamics yields time-dependent diagrammatic perturbation series that are free of pinch singularities, without the need to resort to quasi-particle approximation or ...
Millington, P; id_orcid 0000-0001-6942-8257 +1 more
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Thermality of eigenstates in conformal field theories
Physical Review E, 2017 The eigenstate thermalization hypothesis (ETH) provides a way to understand how an isolated quantum mechanical system can be approximated by a thermal density matrix. We find a class of operators in (1+1)-dimensional conformal field theories, consisting of quasiprimaries of the identity module, which satisfy the hypothesis only at the leading order in ...
Basu P, Das D, Datta S, Pal S
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Global symmetries and partial confinement
Journal of High Energy Physics, 2022 In gauge theories, spontaneous breaking of the centre symmetry provides a precise definition of deconfinement. In large-N gauge theories, evidence has emerged recently that between confined and deconfined phases a partially-deconfined phase can appear ...
Masanori Hanada +3 more
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