TBA equations for excited states in the O(3) and O(4) nonlinear σ-model

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

TBA integral equations are proposed for one-particle states in the sausage and SS models and their σ -model limits. Combined with the ground-state TBA equations the exact mass gap is computed in the O(3) and O(4) nonlinear σ-model and the results are compared to 3-loop perturbation theory and Monte Carlo data.

Original languageEnglish
Pages (from-to)1881-1901
Number of pages21
JournalJournal of Physics A: Mathematical and General
Volume37
Issue number5
DOIs
Publication statusPublished - Feb 6 2004

Fingerprint

Excited States
Excited states
Nonlinear Model
State Equation
Perturbation Theory
excitation
Ground State
Integral Equations
Ground state
Integral equations
integral equations
equations of state
perturbation theory
Model
ground state

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Statistical and Nonlinear Physics
  • Mathematical Physics

Cite this

TBA equations for excited states in the O(3) and O(4) nonlinear σ-model. / Balog, J.; Hegedűs, A.

In: Journal of Physics A: Mathematical and General, Vol. 37, No. 5, 06.02.2004, p. 1881-1901.

Research output: Contribution to journalArticle

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