Correlation functions of an interacting spinless fermion model at finite temperature
نویسندگان
چکیده
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 oneparticle 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. PACS numbers: 05.30.-d, 71.10.Fd, 02.30.Ik
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