### Abstract

We derive a nonlinear integral equation (NLIE) for some bulk excited states of the sine-Gordon model on a finite interval with general integrable boundary interactions, including boundary terms proportional to the first time derivative of the field. We use this NLIE to compute numerically the dimensions of these states as a function of scale, and check the UV and IR limits analytically. We also find further support for the ground-state NLIE by comparison with boundary conformal perturbation theory (BCPT), boundary truncated conformal space approach (BTCSA) and the boundary analogue of the Lüscher formula.

Original language | English (US) |
---|---|

Pages (from-to) | 307-335 |

Number of pages | 29 |

Journal | Nuclear Physics B |

Volume | 714 |

Issue number | 3 |

DOIs | |

State | Published - May 16 2005 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics

### Cite this

*Nuclear Physics B*,

*714*(3), 307-335. https://doi.org/10.1016/j.nuclphysb.2005.03.014

**NLIE for hole excited states in the sine-Gordon model with two boundaries.** / Ahn, Changrim; Bajnok, Zoltán; Nepomechie, Rafael; Palla, László; Takács, Gábor.

Research output: Contribution to journal › Article

*Nuclear Physics B*, vol. 714, no. 3, pp. 307-335. https://doi.org/10.1016/j.nuclphysb.2005.03.014

}

TY - JOUR

T1 - NLIE for hole excited states in the sine-Gordon model with two boundaries

AU - Ahn, Changrim

AU - Bajnok, Zoltán

AU - Nepomechie, Rafael

AU - Palla, László

AU - Takács, Gábor

PY - 2005/5/16

Y1 - 2005/5/16

N2 - We derive a nonlinear integral equation (NLIE) for some bulk excited states of the sine-Gordon model on a finite interval with general integrable boundary interactions, including boundary terms proportional to the first time derivative of the field. We use this NLIE to compute numerically the dimensions of these states as a function of scale, and check the UV and IR limits analytically. We also find further support for the ground-state NLIE by comparison with boundary conformal perturbation theory (BCPT), boundary truncated conformal space approach (BTCSA) and the boundary analogue of the Lüscher formula.

AB - We derive a nonlinear integral equation (NLIE) for some bulk excited states of the sine-Gordon model on a finite interval with general integrable boundary interactions, including boundary terms proportional to the first time derivative of the field. We use this NLIE to compute numerically the dimensions of these states as a function of scale, and check the UV and IR limits analytically. We also find further support for the ground-state NLIE by comparison with boundary conformal perturbation theory (BCPT), boundary truncated conformal space approach (BTCSA) and the boundary analogue of the Lüscher formula.

UR - http://www.scopus.com/inward/record.url?scp=17144402992&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17144402992&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysb.2005.03.014

DO - 10.1016/j.nuclphysb.2005.03.014

M3 - Article

AN - SCOPUS:17144402992

VL - 714

SP - 307

EP - 335

JO - Nuclear Physics B

JF - Nuclear Physics B

SN - 0550-3213

IS - 3

ER -