3 papers
cond-mat.stat-mech2021
Symmetry decomposition of negativity of massless free fermions
Sara Murciano, Riccarda Bonsignori, Pasquale Calabrese
We consider the problem of symmetry decomposition of the entanglement negativity in free fermionic systems. Rather than performing the standard partial transpose, we use the partia…
cond-mat.stat-mech2020
Quasiparticle dynamics of symmetry resolved entanglement after a quench: the examples of conformal field theories and free fermions
Gilles Parez, Riccarda Bonsignori, Pasquale Calabrese
The time evolution of the entanglement entropy is a key concept to understand the structure of a non-equilibrium quantum state. In a large class of models, such evolution can be un…
cond-mat.stat-mech2019
Symmetry resolved entanglement in free fermionic systems
Riccarda Bonsignori, Paola Ruggiero, Pasquale Calabrese
We consider the symmetry resolved Rényi entropies in the one dimensional tight binding model, equivalent to the spin-1/2 XX chain in a magnetic field. We exploit the generalised Fi…