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Physics - Theoretical, Mathematical & Computational Physics | Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics

Thermal Quantum Field Theory and Perturbative Non-Equilibrium Dynamics

Series: Springer Theses

Millington, Peter

2014, XXV, 215 p. 28 illus., 10 illus. in color.

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  • Nominated as an Outstanding Ph.D. thesis by the University of Manchester, UK
  • Provides a clear overview of prerequisite material from classical thermodynamics, classical and quantum statistical mechanics and equilibrium thermal field theory
  • Includes extensive chapter-by-chapter bibliographies of further reading
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

Content Level » Research

Keywords » Diagrammatic Approach to Non-Equilibrium - Field Theory - Imaginary Time - Non-Equilibrium Thermal Quantum Field Theory - Non-Homogeneous Backgrounds - Out-of-Equilibrium Many-Body Dynamics - Quantum Statistical Mechanics

Related subjects » Classical Continuum Physics - Complexity - Theoretical, Mathematical & Computational Physics

Table of contents 

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.

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