Finite-size effects in the SS-model: Two component nonlinear integral equations

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We derive a finite set of nonlinear integral equations for describing the finite-size dependence of the ground state energy of the O(4) nonlinear sigma model. By modifying the kernel functions of these equations we propose nonlinear integral equations for the finite-size effects in the SS-model. The equations are formulated in terms of two complex valued unknown functions and they are valid for arbitrary real values of the couplings.

Original languageEnglish
Pages (from-to)545-567
Number of pages23
JournalNuclear Physics B
Issue number3
Publication statusPublished - Feb 23 2004


ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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