Variational study of critical properties: The spectrum and phase structure of the XY model

N. D. Hari Dass, A. Patkós

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The wave functionals for the excited states of the two-dimensional planar rotator model are constructed approximately with the help of analytical ansätze. The mass gap so calculated is found to be in quantitative agreement with theoretical expectations for any T>Tc. The order-disorder type transition line of the generalized model with Ising type symmetry breaking term is obtained using a similar ansatz.

Original languageEnglish
Pages (from-to)529-552
Number of pages24
JournalNuclear Physics, Section B
Volume210
Issue number4
DOIs
Publication statusPublished - Dec 13 1982

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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