Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics

The author develops a new perturbative formalism of non-equilibrium thermal quantum field theory for non-homogeneous backgrounds. As a result of this formulation, the author is able to show how so-called pinch singularities can be removed, without resorting to ad hoc prescriptions, or effective resu...

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Bibliographic Details
Main Author: Millington, Peter
Format: eBook
Language:English
Published: Cham Springer International Publishing 2014, 2014
Edition:1st ed. 2014
Series:Springer Theses, Recognizing Outstanding Ph.D. Research
Subjects:
Online Access:
Collection: Springer eBooks 2005- - Collection details see MPG.ReNa
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245 0 0 |a Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics  |h Elektronische Ressource  |c by Peter Millington 
250 |a 1st ed. 2014 
260 |a Cham  |b Springer International Publishing  |c 2014, 2014 
300 |a XXV, 215 p. 28 illus., 10 illus. in color  |b online resource 
505 0 |a Introduction -- Equilibrium Mechanics -- Introduction to Part I -- Classical Prerequisites -- Quantum Statistical Mechanics -- Correlation Functions -- Imaginary Time Formalism -- The Scalar Field -- Non-equilibrium Mechanics -- Introduction to Part II -- The CTP Formalism -- Non-Homogeneous Backgrounds -- The Thermodynamic Equilibrium Limit 
653 |a Complex Systems 
653 |a Quantum field theory 
653 |a Thermodynamics 
653 |a Elementary particles (Physics) 
653 |a Mathematical Physics 
653 |a System theory 
653 |a Elementary Particles, Quantum Field Theory 
653 |a Mathematical physics 
653 |a Theoretical, Mathematical and Computational Physics 
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520 |a The author develops a new perturbative formalism of non-equilibrium thermal quantum field theory for non-homogeneous backgrounds. As a result of this formulation, the author is able to show how so-called pinch singularities can be removed, without resorting to ad hoc prescriptions, or effective resummations of absorptive effects. Thus, the author arrives at a diagrammatic approach to non-equilibrium field theory, built from modified Feynman rules that are manifestly time-dependent from tree level. This new formulation provides an alternative framework in which to derive master time evolution equations for physically meaningful particle number densities, which are valid to all orders in perturbation theory and to all orders in gradient expansion. Once truncated in a loop-wise sense, these evolution equations capture non-equilibrium dynamics on all time-scales, systematically describing energy-violating processes and the non-Markovian evolution of memory effects