Full counting statistics and symmetry resolved entanglement for free conformal theories with interface defects

L Capizzi, S Murciano… - Journal of Statistical …, 2023 - iopscience.iop.org
We consider the ground state of two species of one-dimensional critical free theories
coupled together via a conformal interface. They have an internal U (1) global symmetry and …

Domain wall melting across a defect

L Capizzi, S Scopa, F Rottoli, P Calabrese - Europhysics Letters, 2023 - iopscience.iop.org
We study the melting of a domain wall in a free-fermionic chain with a localised impurity. We
find that the defect enhances quantum correlations in such a way that even the smallest …

Entanglement asymmetry in CFT and its relation to non-topological defects

M Fossati, F Ares, J Dubail, P Calabrese - Journal of High Energy Physics, 2024 - Springer
A bstract The entanglement asymmetry is an information based observable that quantifies
the degree of symmetry breaking in a region of an extended quantum system. We …

Multi-charged moments and symmetry-resolved Rényi entropy of free compact boson for multiple disjoint intervals

H Gaur, UA Yajnik - Journal of High Energy Physics, 2024 - Springer
A bstract We study multi-charged moments and symmetry-resolved Rényi entropy of free
compact boson for multiple disjoint intervals. The Rényi entropy evaluation involves …

Entanglement evolution after a global quench across a conformal defect

L Capizzi, V Eisler - SciPost Physics, 2023 - scipost.org
We study the evolution of entanglement after a global quench in a one-dimensional
quantum system with a localized impurity. For systems described by a conformal field theory …

Rényi entropy and negativity for massless complex boson at conformal interfaces and junctions

L Capizzi, S Murciano, P Calabrese - Journal of High Energy Physics, 2022 - Springer
A bstract We consider the ground state of a theory composed by M species of massless
complex bosons in one dimension coupled together via a conformal interface. We compute …

Zero-mode entanglement across a conformal defect

L Capizzi, V Eisler - Journal of Statistical Mechanics: Theory and …, 2023 - iopscience.iop.org
We consider a free-fermion chain with a conformal defect that features an extended zero
mode, and study the entanglement properties in its mixed ground state. The zero-mode …

Entanglement and negativity Hamiltonians for the massless Dirac field on the half line

F Rottoli, S Murciano, E Tonni… - Journal of Statistical …, 2023 - iopscience.iop.org
We study the ground-state entanglement Hamiltonian of several disjoint intervals for the
massless Dirac fermion on the half-line. Its structure consists of a local part and a bi-local …

Boundary Symmetry Breaking in CFT and the string order parameter

R Bonsignori, L Capizzi, P Panopoulos - Journal of High Energy Physics, 2023 - Springer
A bstract We consider the ground state of a one-dimensional critical quantum system
carrying a global symmetry in the bulk, which is explicitly broken by its boundary conditions …

Finite temperature negativity Hamiltonians of the massless Dirac fermion

F Rottoli, S Murciano, P Calabrese - Journal of High Energy Physics, 2023 - Springer
A bstract The negativity Hamiltonian, defined as the logarithm of a partially transposed
density matrix, provides an operatorial characterisation of mixed-state entanglement …