Results 21 to 30 of about 105,946 (302)
Field theory in Rindler frame and more on the correspondence with thermal field theory formalisms
Annals of PhysicsConsidering two accelerated observers with same acceleration in two timelike wedges of Rindler frame we calculate the Feynman-{\it like} propagators for a real scalar field in a thermal bath with respect to the Minkowski vacuum.
Barman, Dipankar, Majhi, Bibhas Ranjan
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Quantum and thermal fluctuations in field theory [PDF]
Physical Review D, 1995 27pp+7 figures, MIT-CTP ...
Liao, Sen-Ben +2 more
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Interplay between improved interaction rates and modified cosmological histories for dark matter
Frontiers in Physics, 2023 A novel particle has been and still is an intriguing option to explain the strong evidence for dark matter in our universe. To quantitatively predict the dark matter energy density, two main ingredients are needed: interaction rates and the history of ...
Simone Biondini
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Feynman rules for forced wave turbulence
Journal of High Energy Physics, 2023 It has long been known that weakly nonlinear field theories can have a late-time stationary state that is not the thermal state, but a wave turbulent state with a far-from-equilibrium cascade of energy.
Vladimir Rosenhaus, Michael Smolkin
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Thermal Effects in Ising Cosmology
Universe, 2023 We consider a real scalar field in de Sitter background and compute its thermal propagators. We propose that in a dS/CFT context, nontrivial thermal effects as seen by an ‘out’ observer can be encoded in the anomalous dimensions of the d=3 Ising model ...
Nikos Irges +2 more
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Equilibrium States in Thermal Field Theory and in Algebraic Quantum Field Theory [PDF]
Annales Henri Poincaré, 2019 40 ...
Braga de GoesVasconcellos J. +2 more
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Renormalized thermal entropy in field theory [PDF]
Physical Review D, 2009 Standard entropy calculations in quantum field theory, when applied to a subsystem of definite volume, exhibit area-dependent UV divergences that make a thermodynamic interpretation troublesome. In this paper we define a renormalized entropy which is related with the Newton-Wigner position operator. Accordingly, whenever we trace over a region of space,
CACCIATORI, SERGIO LUIGI +2 more
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Determining all thermodynamic transport coefficients for an interacting large N quantum field theory
Journal of High Energy Physics, 2023 Thermodynamic transport coefficients can be calculated directly from quantum field theory without requiring analytic continuation to real time. We determine all second-order thermodynamic transport coefficients for the uncharged N-component massless ...
Max Weiner, Paul Romatschke
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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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