Classical-quantum correspondence for fields

Tanmay Vachaspati, George Zahariade

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We map the quantum problem of a free bosonic field in a space-time dependent background into a classical problem. N degrees of freedom of a real field in the quantum theory are mapped into 2N2 classical simple harmonic oscillators with specific initial conditions. We discuss how this classical-quantum correspondence (CQC) may be used to evaluate quantum radiation and fully treat the backreaction of quantum fields on classical backgrounds. The technique has widespread application, including to the quantum evaporation of classical breathers ("oscillons").

Original languageEnglish (US)
Article number015
JournalJournal of Cosmology and Astroparticle Physics
Volume2019
Issue number9
DOIs
StatePublished - Sep 4 2019

Keywords

  • ination
  • physics of the early universe
  • quantum field theory on curved space

ASJC Scopus subject areas

  • Astronomy and Astrophysics

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