### Abstract

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 language | English |
---|---|

Pages (from-to) | 545-567 |

Number of pages | 23 |

Journal | Nuclear Physics B |

Volume | 679 |

Issue number | 3 |

DOIs | |

Publication status | Published - Feb 23 2004 |

### Fingerprint

### ASJC Scopus subject areas

- Nuclear and High Energy Physics