Entanglement entropy from a holographic viewpoint

T Takayanagi - Classical and Quantum Gravity, 2012 - iopscience.iop.org
The entanglement entropy has been historically studied by many authors in order to obtain
quantum mechanical interpretations of the gravitational entropy. The discovery of anti-de …

Finite temperature entanglement negativity in conformal field theory

P Calabrese, J Cardy, E Tonni - Journal of Physics A …, 2014 - iopscience.iop.org
We consider the logarithmic negativity of a finite interval embedded in an infinite one
dimensional system at finite temperature. We focus on conformal invariant systems and we …

Entanglement negativity after a global quantum quench

A Coser, E Tonni, P Calabrese - Journal of Statistical Mechanics …, 2014 - iopscience.iop.org
We study the time evolution of the logarithmic negativity after a global quantum quench. In a
1+ 1-dimensional conformal invariant field theory, we consider the negativity between two …

Some results on the mutual information of disjoint regions in higher dimensions

J Cardy - Journal of Physics A: Mathematical and Theoretical, 2013 - iopscience.iop.org
Some results on the mutual information of disjoint regions in higher dimensions - IOPscience
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Entanglement entropy of two disjoint intervals and the recursion formula for conformal blocks

P Ruggiero, E Tonni, P Calabrese - Journal of Statistical …, 2018 - iopscience.iop.org
We reconsider the computation of the entanglement entropy of two disjoint intervals in a (1+
1) dimensional conformal field theory by conformal block expansion of the 4-point …

Entanglement entropy and negativity of disjoint intervals in CFT: Some numerical extrapolations

C De Nobili, A Coser, E Tonni - Journal of Statistical Mechanics …, 2015 - iopscience.iop.org
The entanglement entropy and the logarithmic negativity can be computed in quantum field
theory through a method based on the replica limit. Performing these analytic continuations …

On the definition of entanglement entropy in lattice gauge theories

S Aoki, T Iritani, M Nozaki, T Numasawa… - Journal of High Energy …, 2015 - Springer
A bstract We focus on the issue of proper definition of entanglement entropy in lattice gauge
theories, and examine a naive definition where gauge invariant states are viewed as …

Entanglement of purification in free scalar field theories

A Bhattacharyya, T Takayanagi, K Umemoto - Journal of High Energy …, 2018 - Springer
A bstract We compute the entanglement of purification (EoP) in a 2d free scalar field theory
with various masses. This quantity measures correlations between two subsystems and is …

Real-space entanglement in the Cosmic Microwave Background

J Martin, V Vennin - Journal of Cosmology and Astroparticle …, 2021 - iopscience.iop.org
We compute the entanglement entropy, mutual information and quantum discord of the
Cosmic Microwave Background (CMB) fluctuations in real space. To that end, we first show …

Notes on quantum entanglement of local operators

M Nozaki - Journal of High Energy Physics, 2014 - Springer
A bstract This is an expanded version of the short report arXiv: 1401.0539, where we studied
the time evolution of (Renyi) entanglement entropies for the excited state defined by acting a …