176 citations · 1.7k across the 56 of their papers we have counts for
25 papers · 1 filter
Theory of Measurement-Altered Criticality
Kabir Khanna, Sara Murciano, Romain Vasseur
Local measurements can alter long-range correlations in gapless quantum matter. We propose a theory of weakly-monitored Tomonaga-Luttinger liquids, a broad class of quantum critica…
Long-range deformations in Gaussian States
Francisco Pereira, Nandagopal Manoj, Sara Murciano
Imaginary-time evolution by a local Hamiltonian cannot induce a phase transition in one dimension, but longer-range interactions may subvert such constraints. Starting from the gro…
Enhancing entanglement asymmetry in fragmented quantum systems
Lorenzo Gotta, Filiberto Ares, Sara Murciano
Entanglement asymmetry provides a quantitative measure of symmetry breaking in many-body quantum states. Focusing on inhomogeneous charges, such as dipole and multipole mome…
The quantum Mpemba effects
Filiberto Ares, Pasquale Calabrese, Sara Murciano
The Mpemba effect, where a hotter system can equilibrate faster than a cooler one, has long been a subject of fascination in classical physics. In the past few years, significant t…
Entanglement asymmetry dynamics in random quantum circuits
Filiberto Ares, Sara Murciano, Pasquale Calabrese +1
We study the dynamics of entanglement asymmetry in random unitary circuits (RUCs). Focusing on a local charge, we consider symmetric initial states evolved by both local one…
Entanglement asymmetry in the critical XXZ spin chain
Marco Lastres, Sara Murciano, Filiberto Ares +1
We study the explicit breaking of a symmetry to a subgroup employing the entanglement asymmetry, a recently introduced observable that measures how much symmetries a…
The quantum Mpemba effect in free-fermionic mixed states
Filiberto Ares, Vittorio Vitale, Sara Murciano
Recently, a novel probe to study symmetry breaking, known as entanglement asymmetry, has emerged and has been utilized to explore how symmetry is dynamically restored following qua…
Entangled multiplets, asymmetry, and quantum Mpemba effect in dissipative systems
Fabio Caceffo, Sara Murciano, Vincenzo Alba
Recently, the entanglement asymmetry emerged as an informative tool to understand dynamical symmetry restoration in out-of-equilibrium quantum many-body systems after a quantum que…
Entanglement asymmetry and quantum Mpemba effect in the XY spin chain
Sara Murciano, Filiberto Ares, Israel Klich +1
Entanglement asymmetry is a quantity recently introduced to measure how much a symmetry is broken in a part of an extended quantum system. It has been employed to analyze the non-e…
Microscopic origin of the quantum Mpemba effect in integrable systems
Colin Rylands, Katja Klobas, Filiberto Ares +3
The highly complicated nature of far from equilibrium systems can lead to a complete breakdown of the physical intuition developed in equilibrium. A famous example of this is the M…
More on symmetry resolved operator entanglement
Sara Murciano, Jérôme Dubail, Pasquale Calabrese
The `operator entanglement' of a quantum operator is a useful indicator of its complexity, and, in one-dimension, of its approximability by matrix product operators. Here we fo…
Symmetry-resolved entanglement in fermionic systems with dissipation
Sara Murciano, Pasquale Calabrese, Vincenzo Alba
We investigate symmetry-resolved entanglement in out-of-equilibrium fermionic systems subject to gain and loss dissipation, which preserves the block-diagonal structure of the redu…
Measurement-altered Ising quantum criticality
Sara Murciano, Pablo Sala, Yue Liu +2
Quantum critical systems constitute appealing platforms for the exploration of novel measurement-induced phenomena due to their innate sensitivity to perturbations. We study the im…
Lack of symmetry restoration after a quantum quench: an entanglement asymmetry study
Filiberto Ares, Sara Murciano, Eric Vernier +1
We consider the quantum quench in the XX spin chain starting from a tilted Néel state which explicitly breaks the symmetry of the post-quench Hamiltonian. Very surprisingly,…
Entanglement and negativity Hamiltonians for the massless Dirac field on the half line
Federico Rottoli, Sara Murciano, Erik Tonni +1
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-lo…
Entanglement asymmetry as a probe of symmetry breaking
Filiberto Ares, Sara Murciano, Pasquale Calabrese
Symmetry and symmetry breaking are two pillars of modern quantum physics. Still, quantifying how much a symmetry is broken is an issue that has received little attention. In extend…
Symmetry-resolved entanglement in a long-range free-fermion chain
Filiberto Ares, Sara Murciano, Pasquale Calabrese
We investigate the symmetry resolution of entanglement in the presence of long-range couplings. To this end, we study the symmetry-resolved entanglement entropy in the ground state…
The Negativity Hamiltonian: An operator characterization of mixed-state entanglement
Sara Murciano, Vittorio Vitale, Marcello Dalmonte +1
In the context of ground states of quantum many-body systems, the locality of entanglement between connected regions of space is directly tied to the locality of the corresponding…
Post-Quantum Quench Growth of Renyi Entropies in Low Dimensional Continuum Bosonic Systems
Sara Murciano, Pasquale Calabrese, Robert M. Konik
The growth of Renyi entropies after the injection of energy into a correlated system provides a window upon the dynamics of its entanglement properties. We develop here a simulatio…
Quench dynamics of Rényi negativities and the quasiparticle picture
Sara Murciano, Vincenzo Alba, Pasquale Calabrese
The study of the moments of the partially transposed density matrix provides a new and effective way of detecting bipartite entanglement in a many-body mixed state. This is valuabl…
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…
Symmetry resolved entanglement in two-dimensional systems via dimensional reduction
Sara Murciano, Paola Ruggiero, Pasquale Calabrese
We report on the calculation of the symmetry resolved entanglement entropies in two-dimensional many-body systems of free bosons and fermions by \emph{dimensional reduction}. When…
Full counting statistics in the gapped XXZ spin chain
Pasquale Calabrese, Mario Collura, Giuseppe Di Giulio +1
We exploit the knowledge of the entanglement spectrum in the ground state of the gapped XXZ spin chain to derive asymptotic exact results for the full counting statistics of the tr…
Symmetry resolved entanglement in gapped integrable systems: a corner transfer matrix approach
Sara Murciano, Giuseppe Di Giulio, Pasquale Calabrese
We study the symmetry resolved entanglement entropies in gapped integrable lattice models. We use the corner transfer matrix to investigate two prototypical gapped systems with a U…