Work

TT¯ Deformations and Integrable Spin Chains

Year: 2020

Type: article

Abstract: We consider current-current deformations that generalize TT[over ¯] ones, and show that they may be also introduced for integrable spin chains. In analogy with the integrable QFT setup, we define the deformation as a modification of the S matrix in the Bethe equations. Using results by Bargheer, Beisert and Loebbert we show that the deforming operator is composite and constructed out of two currents on the lattice; its expectation value factorizes like for TT[over ¯]. Such a deformation may be considered for any combination of charges that preserve the model's integrable structure.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.124.100601

Authors: Enrico Marchetto, Alessandro Sfondrini, Zhou Yang

Institutions: University of Padua, ETH Zurich, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, Institute for Theoretical Physics

Language: Latvian

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,750

Funders: Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Eidgenössische Technische Hochschule Zürich