Work

Exact expectation values of local fields in the quantum sine-Gordon model

Year: 1997

Type: article

Abstract: We propose an explicit expression for vacuum expectation values 〈eiaϕ〉 of the exponential fields in the sine-Gordon model. Our expression agrees both with semi-classical results in the sine-Gordon theory and with perturbative calculations in the massive Thirring model. We use this expression to make new predictions about the large-distance asymptotic form of the two-point correlation function in the XXZ spin chain.

Source: Nuclear Physics B

DOI: 10.1016/s0550-3213(97)00123-5

Authors: Sergei Lukyanov, Alexander Zamolodchikov

Institutions: Landau Institute for Theoretical Physics, Cornell University, Rutgers, The State University of New Jersey

Language: English

Topic: Quantum many-body systems

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid:

Funders: National Science Foundation, U.S. Department of Energy