Improved variational estimates for the mass gap in the two-dimensional XY-model

A. Patkós, N. D.Hari Dass

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The variational estimate obtained recently by us for the mass gap of the two-dimensional XY-model is improved by extending the treatment to higher powers of the transfer operator. The relativistic dispersion relation for single particle states of low momentum is also verified.

Original languageEnglish
Pages (from-to)391-394
Number of pages4
JournalPhysics Letters B
Volume119
Issue number4-6
DOIs
Publication statusPublished - Jan 1 1982

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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