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Three Approaches to Classical Thermal Field Theory
Annals of Physics, 2011 In this paper we study three different functional approaches to classical thermal field theory, which turn out to be the classical counterparts of three well-known different formulations of quantum thermal field theory: the Closed-Time Path (CTP) formalism, the Thermofield Dynamics (TFD) and the Matsubara approach.
Riccardo Penco, E Gozzi
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Basics of Thermal Field Theory
Lecture Notes in Physics, 2016This book presents thermal field theory techniques, which can be applied in both cosmology and the theoretical description of the QCD plasma generated in heavy-ion collision experiments. It focuses on gauge interactions (whether weak or strong), which are essential in both contexts.
Aleksi Vuorinen
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Rules for diagrams in thermal field theories
Physical Review D, 1994Sets of rules are proposed that allow one to write down the amplitude associated with a diagram at temperature [ital T], once the energy running around each loop has been summed over, in the imaginary-time formalism. Alternative forms are given: one is based on tree diagrams, another one on possible intermediate states.
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2013
During last few years, there has been a lot of interest in various phenomena at finite temperature, in quantum field theories. These include the early universe cosmology [1,2], astrophysics of compact stars [3] as well as the experimental programs in relativistic heavy-ion collisions in the context of quark gluon plasma (QGP) [4].
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During last few years, there has been a lot of interest in various phenomena at finite temperature, in quantum field theories. These include the early universe cosmology [1,2], astrophysics of compact stars [3] as well as the experimental programs in relativistic heavy-ion collisions in the context of quark gluon plasma (QGP) [4].
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Thermal Aspects in Quantum Field Theory
Annales Henri Poincaré, 2003Thermal (or “KMS”) states as well as ground states are characterized by analyticity properties in the (complexified) time variable. Such a characterization is applied to the quantum field theoretical systems on Minkowski, de Sitter and anti-de Sitter spacetimes.
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2017
Abstract After a review of the calculational approaches, the free energy of scalar particles in thermal equilibrium is calculated. The IR behaviour of mass-less scalar fields is examined, finding that a resummation of IR divergent terms is necessary.
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Abstract After a review of the calculational approaches, the free energy of scalar particles in thermal equilibrium is calculated. The IR behaviour of mass-less scalar fields is examined, finding that a resummation of IR divergent terms is necessary.
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A UNIFIED FORMALISM OF THERMAL QUANTUM FIELD THEORY
International Journal of Modern Physics A, 1994We present a comprehensive review of the most fundamental and practical aspects of thermo-field dynamics (TFD), including some of the most recent developments in the field. To make TFD fully consistent, some suitable changes in the structure of the thermal doublets and the Bogoliubov transformation matrices have been made.
Chu, H., Umezawa, H.
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