170 citations · 1.3k across the 27 of their papers we have counts for
27 papers
One-particle density matrix and momentum distribution of the out-of-equilibrium 1D Tonks-Girardeau gas: Analytical results at large
Stefano Scopa, Paola Ruggiero, Pasquale Calabrese +1
In one-dimensional (1D) quantum gases, the momentum distribution (MD) of the atoms is a standard experimental observable, routinely measured in various experimental setups. The MD…
Entanglement Rényi Entropies from Ballistic Fluctuation Theory: the free fermionic case
Giuseppe Del Vecchio Del Vecchio, Benjamin Doyon, Paola Ruggiero
The large-scale behaviour of entanglement entropy in finite-density states, in and out of equilibrium, can be understood using the physical picture of particle pairs. However, the…
Bosonization of the interacting Su-Schrieffer-Heeger model
Tony Jin, Paola Ruggiero, Thierry Giamarchi
We derive the bosonization of the interacting fermionic Su-Schrieffer-Heeger (SSH) with open boundaries. We use the classical Euler-Lagrange equations of motions of the bosonized t…
Quantum information spreading in random spin chains
Paola Ruggiero, Xhek Turkeshi
We study the spreading of quantum correlations and information in a one-dimensional quantum spin chain with critical disorder as encoded in an infinite randomness fixed point. Spec…
Electrostatic solution of massless quenches in Luttinger liquids
Paola Ruggiero, Pasquale Calabrese, Thierry Giamarchi +1
The study of the non-equilibrium dynamics of many-body systems after a quantum quench received a considerable boost and a deep theoretical understanding from the path integral form…
Quantum Generalized Hydrodynamics of the Tonks-Girardeau gas: density fluctuations and entanglement entropy
Paola Ruggiero, Pasquale Calabrese, Benjamin Doyon +1
We apply the theory of Quantum Generalized Hydrodynamics (QGHD) introduced in [Phys. Rev. Lett. 124, 140603 (2020)] to derive asymptotically exact results for the density fluctuati…
Generalized-Hydrodynamic approach to Inhomogeneous Quenches: Correlations, Entanglement and Quantum Effects
Vincenzo Alba, Bruno Bertini, Maurizio Fagotti +2
We give a pedagogical introduction to the Generalized Hydrodynamic approach to inhomogeneous quenches in integrable many-body quantum systems. We review recent applications of the…
Interplay between transport and quantum coherences in free fermionic systems
Tony Jin, Tristan Gautié, Alexandre Krajenbrink +2
We study the quench dynamics in free fermionic systems in the prototypical bipartitioning protocol obtained by joining two semi-infinite subsystems prepared in different states, ai…
Quenches in initially coupled Tomonaga-Luttinger Liquids: a conformal field theory approach
Paola Ruggiero, Pasquale Calabrese, Laura Foini +1
We study the quantum quench in two coupled Tomonaga-Luttinger Liquids (TLLs), from the off-critical to the critical regime, relying on the conformal field theory approach and the k…
thermalization, prethermalization and impact of the temperature in the quench dynamics of two unequal Luttinger liquids
Paola Ruggiero, Laura Foini, Thierry Giamarchi
We study the effect of a quantum quench between two tunnel coupled Tomonaga-Luttinger liquids (TLLs) with different speed of sound and interaction parameter. The quench dynamics is…
Entanglement equipartition in critical random spin chains
Xhek Turkeshi, Paola Ruggiero, Vincenzo Alba +1
The reduced density matrix of many-body systems possessing an additive conserved quantity can be decomposed in orthogonal sectors which can be independently analyzed. Recently, the…
Symmetry resolved entanglement entropy of excited states in a CFT
Luca Capizzi, Paola Ruggiero, Pasquale Calabrese
We report a throughout analysis of the entanglement entropies related to different symmetry sectors in the low-lying primary excited states of a conformal field theory (CFT) with a…
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…
Negativity Spectrum in the Random Singlet Phase
Xhek Turkeshi, Paola Ruggiero, Pasquale Calabrese
Entanglement features of the ground state of disordered quantum matter are often captured by an infinite randomness fixed point that, for a variety of models, is the random singlet…
Quantum Generalized Hydrodynamics
Paola Ruggiero, Pasquale Calabrese, Benjamin Doyon +1
Physical systems made of many interacting quantum particles can often be described by Euler hydrodynamic equations in the limit of long wavelengths and low frequencies. Recently su…
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…
Subsystem trace distance in low-lying states of -dimensional conformal field theories
Jiaju Zhang, Paola Ruggiero, Pasquale Calabrese
We report on a systematic replica approach to calculate the subsystem trace distance for a quantum field theory. This method has been recently introduced in [J. Zhang, P. Ruggiero,…
Twisted and untwisted negativity spectrum of free fermions
Hassan Shapourian, Paola Ruggiero, Shinsei Ryu +1
A basic diagnostic of entanglement in mixed quantum states is known as the positive partial transpose (PT) criterion. Such criterion is based on the observation that the spectrum o…
Subsystem Trace Distance in Quantum Field Theory
Jiaju Zhang, Paola Ruggiero, Pasquale Calabrese
We develop a systematic method to calculate the trace distance between two reduced density matrices in 1+1 dimensional quantum field theories. The approach exploits the path integr…
Conformal field theory on top of a breathing one-dimensional gas of hard core bosons
Paola Ruggiero, Yannis Brun, Jérome Dubail
The recent results of [J. Dubail, J.-M. Stéphan, J. Viti, P. Calabrese, Scipost Phys. 2, 002 (2017)], which aim at providing access to large scale correlation functions of inhomoge…
Entanglement and relative entropies for low-lying excited states in inhomogeneous one-dimensional quantum systems
Sara Murciano, Paola Ruggiero, Pasquale Calabrese
Conformal field theories in curved backgrounds have been used to describe inhomogeneous one-dimensional systems, such as quantum gases in trapping potentials and non-equilibrium sp…
Unusual area-law violation in random inhomogeneous systems
Vincenzo Alba, Silvia N. Santalla, Paola Ruggiero +3
The discovery of novel entanglement patterns in quantum many-body systems is a prominent research direction in contemporary physics. Here we provide the example of a spin chain wit…
Entanglement entropy of two disjoint intervals and the recursion formula for conformal blocks
Paola Ruggiero, Erik Tonni, Pasquale Calabrese
We reconsider the computation of the entanglement entropy of two disjoint intervals in a (1+1) dimensional conformal field theory by conformal block expansion of the 4-point correl…
Relative Entanglement Entropies in 1+1-dimensional conformal field theories
Paola Ruggiero, Pasquale Calabrese
We study the relative entanglement entropies of one interval between excited states of a 1+1 dimensional conformal field theory (CFT). To compute the relative entropy $S(ρ_1 \| ρ_0…