Entanglement of exact excited states of Affleck-Kennedy-Lieb-Tasaki models: Exact results, many-body scars, and violation of the strong eigenstate thermalization …

S Moudgalya, N Regnault, BA Bernevig - Physical Review B, 2018 - APS
We obtain multiple exact results on the entanglement of the exact excited states of
nonintegrable models we introduced in Phys. Rev. B 98, 235155 (2018) 10.1103/PhysRevB …

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 …

Entanglement negativity in random spin chains

P Ruggiero, V Alba, P Calabrese - Physical Review B, 2016 - APS
We investigate the logarithmic negativity in strongly disordered spin chains in the random-
singlet phase. We focus on the spin-1 2 random Heisenberg chain and the random XX …

Entanglement negativity in the critical Ising chain

P Calabrese, L Tagliacozzo… - Journal of Statistical …, 2013 - iopscience.iop.org
We study the scaling of the traces of the integer powers of the partially transposed reduced
density matrix $\mathrm {Tr}({\rho} _ {A}^{{T} _ {2}})^{n} $ and of the entanglement negativity …

Spin structures and entanglement of two disjoint intervals in conformal field theories

A Coser, E Tonni, P Calabrese - Journal of Statistical Mechanics …, 2016 - iopscience.iop.org
We reconsider the moments of the reduced density matrix of two disjoint intervals and of its
partial transpose with respect to one interval for critical free fermionic lattice models. It is …

Long-range entanglement and topological excitations

G Torre, J Odavić, P Fromholz, SM Giampaolo… - SciPost Physics …, 2024 - scipost.org
Topological order comes in different forms, and its classification and detection is an
important field of modern research. In this work, we show that the Disconnected …

Towards the entanglement negativity of two disjoint intervals for a one dimensional free fermion

A Coser, E Tonni, P Calabrese - Journal of Statistical Mechanics …, 2016 - iopscience.iop.org
We study the moments of the partial transpose of the reduced density matrix of two intervals
for the free massless Dirac fermion. By means of a direct calculation based on a coherent …

Entanglement negativity in a two dimensional harmonic lattice: Area law and corner contributions

C De Nobili, A Coser, E Tonni - Journal of Statistical Mechanics …, 2016 - iopscience.iop.org
We study the logarithmic negativity and the moments of the partial transpose in the ground
state of a two dimensional massless harmonic square lattice with nearest neighbour …

Macroscopic quantum entanglement of a Kondo cloud at finite temperature

SSB Lee, J Park, HS Sim - Physical Review Letters, 2015 - APS
We propose a variational approach for computing the macroscopic entanglement in a many-
body mixed state, based on entanglement witness operators, and compute the …