Work

Entanglement entropy and its linear response following a global quench in holographic Gauss-Bonnet gravity

Year: 2025

Type: article

Abstract: Growth of entanglement entropy in time-dependent states formed due to a global quench in holographic conformal field theories which admit an Einstein-Gauss-Bonnet dual gravity description is studied. The global quench in the bulk is modelled by an AdS-Vaidya solution with an electric charge. It is observed that the Gauss-Bonnet correction parameter leads to faster thermalization, and lower saturation entropy. The rate of growth also depends crucially on the correction, and may exceed 1 in general spacetime dimensions. Nevertheless, the growth still follows the universal pattern expected for relativistic CFTs. Additionally, a time-dependent analogue of relative entropy introduced in [1] is generalized to include correction from the Gauss-Bonnet parameter. We demonstrate our findings through concrete examples, including instantaneous, linear, and periodically driven quenches. We also briefly mention the evolution of mutual information.

Source: Nuclear Physics B

DOI: 10.1016/j.nuclphysb.2025.117084

Authors: Sabyasachi Maulik, Soumen Pari

Institutions: Indian Institute of Technology Kanpur, Saha Institute of Nuclear Physics, Homi Bhabha National Institute

Language: English

Topic: Black Holes and Theoretical Physics

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: Department of Atomic Energy, Government of India, Nuclear Physics

OpenAlex ID: W4413581723

FWCI:

Cites: 44

Cited by:

Related to: 10