# Quantum Fisher metric in field theory and gravity

### APA

Lashkari, N. (2015). Quantum Fisher metric in field theory and gravity. Perimeter Institute. https://pirsa.org/15080081

### MLA

Lashkari, Nima. Quantum Fisher metric in field theory and gravity. Perimeter Institute, Aug. 21, 2015, https://pirsa.org/15080081

### BibTex

@misc{ pirsa_PIRSA:15080081, doi = {10.48660/15080081}, url = {https://pirsa.org/15080081}, author = {Lashkari, Nima}, keywords = {Quantum Fields and Strings, Quantum Gravity, Quantum Information}, language = {en}, title = {Quantum Fisher metric in field theory and gravity}, publisher = {Perimeter Institute}, year = {2015}, month = {aug}, note = {PIRSA:15080081 see, \url{https://pirsa.org}} }

McGill University

**Collection**

Talk Type

Abstract

In the first part of this talk, we discuss a generalized replica trick that is based on replica symmetry breaking partitions. This allows us compute the modular Hamiltonian, relative entropy and quantum Fisher information of excited states in conformal field theory.
In the second part, we consider holographic CFTs and show that quantum Fisher metric for ball shaped regions in vacuum is dual to the canonical energy of metric perturbations corresponding to the Rindler wedge of Anti-de Sitter space.