Exact quench dynamics of symmetry resolved entanglement in a free fermion chain

G Parez, R Bonsignori… - Journal of Statistical …, 2021 - iopscience.iop.org
The study of the entanglement dynamics plays a fundamental role in understanding the
behaviour of many-body quantum systems out of equilibrium. In the presence of a globally …

Non-equilibrium entanglement asymmetry for discrete groups: the example of the XY spin chain

F Ferro, F Ares, P Calabrese - Journal of Statistical Mechanics …, 2024 - iopscience.iop.org
Entanglement asymmetry is a novel quantity that, using entanglement methods, measures
how much a symmetry is broken in a part of an extended quantum system. So far, it has only …

Dynamics of charge-imbalance-resolved entanglement negativity after a quench in a free-fermion model

G Parez, R Bonsignori… - Journal of Statistical …, 2022 - iopscience.iop.org
The presence of a global internal symmetry in a quantum many-body system is reflected in
the fact that the entanglement between its subparts is endowed with an internal structure …

Reflected entropy and computable cross-norm negativity: Free theories and symmetry resolution

C Berthiere, G Parez - Physical Review D, 2023 - APS
We investigate a separability criterion based on the computable cross-norm (CCNR), and a
related quantity called the CCNR negativity. We introduce a reflected version of the CCNR …

Reflected entropy and Markov gap in Lifshitz theories

C Berthiere, B Chen, H Chen - Journal of High Energy Physics, 2023 - Springer
A bstract We study the reflected entropy in (1+ 1)-dimensional Lifshitz field theory whose
groundstate is described by a quantum mechanical model. Starting from tripartite Lifshitz …

Universality in the tripartite information after global quenches:(generalised) quantum XY models

V Marić, M Fagotti - Journal of High Energy Physics, 2023 - Springer
A bstract We consider the Rényi-α tripartite information\({I} _3^{\left (\alpha\right)}\) of three
adjacent subsystems in the stationary state emerging after global quenches in …

Negative tripartite mutual information after quantum quenches in integrable systems

F Caceffo, V Alba - Physical Review B, 2023 - APS
We build the quasiparticle picture for the tripartite mutual information (TMI) after quantum
quenches in spin chains that can be mapped onto free-fermion theories. A nonzero TMI …

Separability and entanglement of resonating valence-bond states

G Parez, C Berthiere, W Witczak-Krempa - SciPost Physics, 2023 - scipost.org
We investigate separability and entanglement of Rokhsar-Kivelson (RK) states and
resonating valence-bond (RVB) states. These states play a prominent role in condensed …

Disorder-Order Interface Propagating over the Ferromagnetic Ground State in the Transverse Field Ising Chain

V Marić, F Ferro, M Fagotti - arxiv preprint arxiv:2411.04089, 2024 - arxiv.org
We consider time evolution of order parameters and entanglement asymmetries in the
ferromagnetic phase of the transverse-field Ising chain. One side of the system is prepared …

[HTML][HTML] Multipartite information of free fermions on Hamming graphs

G Parez, PA Bernard, N Crampé, L Vinet - Nuclear Physics B, 2023 - Elsevier
We investigate multipartite information and entanglement measures in the ground state of a
free-fermion model defined on a Hamming graph. Using the known diagonalization of the …