The epsilon-expansion in the symmetry-broken phase of an interacting Bose gas at finite temperature

G Metikas, O Zobay, G Alber

Research output: Contribution to journalArticle (Academic Journal)

7 Citations (Scopus)

Abstract

We discuss the application of the momentum-shell renormalization group method to the interacting homogeneous Bose gas in the symmetric and symmetry-broken phases. It is demonstrated that recently discussed discrepancies are artefacts due to not taking proper care of infrared divergencies appearing at finite temperature. If these divergencies are taken into account and treated properly by means of the epsilon expansion, the resulting renormalization group equations and the corresponding universal properties are identical in the symmetric and symmetry-broken phases.
Translated title of the contributionThe epsilon-expansion in the symmetry-broken phase of an interacting Bose gas at finite temperature
Original languageEnglish
Pages (from-to)4595 - 4604
Number of pages10
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Volume36
DOIs
Publication statusPublished - Nov 2003

Bibliographical note

Publisher: IOP Publishing Ltd

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