Correlation functions of an interacting spinless fermion model at finite temperature

Kohei Motegi, Kazumitsu Sakai

Research output: Contribution to journalArticle

Abstract

We formulate correlation functions for a one-dimensional interacting spinless fermion model at finite temperature. By combination of a lattice path integral formulation for thermodynamics with the algebraic Bethe ansatz for fermion systems, the equal-time one-particle Green's function at arbitrary particle density is expressed as a multiple-integral form. Our formula reproduces previously known results in the following three limits: the zero-temperature, the infinite-temperature and the free fermion limits.

Original languageEnglish
Article numberP02005
JournalJournal of Statistical Mechanics: Theory and Experiment
Volume2008
Issue number2
DOIs
Publication statusPublished - 1 Feb 2008

Keywords

  • Correlation functions
  • Integrable spin chains (vertex models)
  • Quantum integrability (Bethe ansatz)
  • Solvable lattice models

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