Published 2016 | Version v1
Journal article Metadata-only

Applicability of the Wigner functional approach to evolution of quantum fields

Creators

  • 1. Moscow Institute of Physics and Technology, Moscow (Russian Federation)
  • 2. Moscow Engineering Physics Institute, Moscow (Russian Federation)
  • 3. P.N. Lebedev Physics Institute of the Russian Academy of Sciences, Moscow (Russian Federation)

Description

Evolution of highly excited quantum field is considered in the framework of Keldysh formalism . It is demonstrated that leading order (LO) term of semiclassical approximation appears as well-known Classical Statistical Approximation (CSA). In simple case of spatially homogeneous scalar field analytical expressions for leading and next-to-leading (NLO) order are presented. It is shown that the range of applicability of CSA strongly depends on the properties of the initial state of the system

Availability note (English)

Available from http://www.epj-conferences.org/articles/epjconf/pdf/2016/20/epjconf_quark2016_05013.pdf; https://doaj.org/article/1bc34940c8b244a483b09fe7d55cd213; http://dx.doi.org/10.1051/epjconf/201612505013

Additional details

Identifiers

URL
http://www.epj-conferences.org/articles/epjconf/pdf/2016/20/epjconf_quark2016_05013.pdf; https://doaj.org/article/1bc34940c8b244a483b09fe7d55cd213;
DOI
10.1051/epjconf/201612505013;

Publishing Information

Journal Title
EPJ. Web of Conferences
Journal Volume
125
Journal Page Range
05013 p.
ISSN
2100-014X

Conference

Title
19. International Seminar on High Energy Physics
Acronym
QUARKS 2016
Dates
29 May - 4 Jun 2016
Place
Pushkin (Russian Federation)

INIS

Country of Publication
France
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
48004699
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ANALYTICAL SOLUTION; MATHEMATICAL EVOLUTION; QUANTUM FIELD THEORY; SCALAR FIELDS; SEMICLASSICAL APPROXIMATION; WIGNER DISTRIBUTION
Descriptors DEC
APPROXIMATIONS; CALCULATION METHODS; EVOLUTION; FIELD THEORIES; MATHEMATICAL SOLUTIONS

Optional Information

Copyright
Copyright (c) 2016 The Authors. Published by EDP Sciences