179 citations · 1.7k across the 36 of their papers we have counts for
36 papers
How compactness curbs entanglement growth in bosonic systems
Stefan Aimet, Philipp Schmoll, Jens Eisert +2
Zero modes, understood here as degrees of freedom with vanishing confining frequency, play a central role in the nonequilibrium dynamics of bosonic systems. In Gaussian models, how…
Perfect Wave Transfer in Continuous Quantum Systems
Per Moosavi, Matthias Christandl, Gian Michele Graf +1
The transfer of information from one part of a quantum system to another is fundamental to the understanding and design of quantum information processing devices. In the realm of d…
Experimentally probing Landauer's principle in the quantum many-body regime
Stefan Aimet, Mohammadamin Tajik, Gabrielle Tournaire +6
Landauer's principle bridges information theory and thermodynamics by linking the entropy change of a system during a process to the average energy dissipated to its environment. A…
Hamiltonian truncation tensor networks for quantum field theories
Philipp Schmoll, Jan Naumann, Alexander Nietner +2
Understanding the equilibrium properties and out of equilibrium dynamics of quantum field theories are key aspects of fundamental problems in theoretical particle physics and cosmo…
Ergodicity breaking and deviation from Eigenstate Thermalisation in relativistic QFT
Miha Srdinšek, Tomaž Prosen, Spyros Sotiriadis
The validity of the ergodic hypothesis in quantum systems can be rephrased in the form of the eigenstate thermalisation hypothesis (ETH), a set of statistical properties for the ma…
Experimental Observation of Curved Light-Cones in a Quantum Field Simulator
Mohammadamin Tajik, Marek Gluza, Nicolas Sebe +10
We investigate signal propagation in a quantum field simulator of the Klein-Gordon model realized by two strongly coupled parallel one-dimensional quasi-condensates. By measuring l…
Experimental verification of the area law of mutual information in a quantum field simulator
Mohammadamin Tajik, Ivan Kukuljan, Spyros Sotiriadis +10
Theoretical understanding of the scaling of entropies and the mutual information has led to significant advances in the research of correlated states of matter, quantum field theor…
Inhomogeneous quantum quenches in the sine-Gordon theory
D. X. Horváth, M. Kormos, S. Sotiriadis +1
We study inhomogeneous quantum quenches in the attractive regime of the sine-Gordon model. In our protocol, the system is prepared in an inhomogeneous initial state in finite volum…
Mechanisms for the emergence of Gaussian correlations
Marek Gluza, Thomas Schweigler, Mohammadamin Tajik +8
We comprehensively investigate two distinct mechanisms leading to memory loss of non-Gaussian correlations after switching off the interactions in an isolated quantum system underg…
Breaking of Huygens-Fresnel principle in inhomogeneous Tomonaga-Luttinger liquids
Marek Gluza, Per Moosavi, Spyros Sotiriadis
Tomonaga-Luttinger liquids (TLLs) can be used to effectively describe one-dimensional quantum many-body systems such as ultracold atoms, charges in nanowires, superconducting circu…
Signatures of Chaos in Non-integrable Models of Quantum Field Theory
Miha Srdinsek, Tomaz Prosen, Spyros Sotiriadis
We study signatures of quantum chaos in (1+1)D Quantum Field Theory (QFT) models. Our analysis is based on the method of Hamiltonian truncation, a numerical approach for the constr…
Non-Equilibrium Steady State of the Lieb-Liniger model: multiple-integral representation of the time evolved many-body wave-function
Spyros Sotiriadis
We continue our study of the emergence of Non-Equilibrium Steady States in quantum integrable models focusing on the expansion of a Lieb-Liniger gas for arbitrary repulsive interac…
Non-Equilibrium Steady State of the Lieb-Liniger model: exact treatment of the Tonks Girardeau limit
Spyros Sotiriadis
Aiming at studying the emergence of Non-Equilibrium Steady States (NESS) in quantum integrable models by means of an exact analytical method, we focus on the Tonks-Girardeau or har…
Decay and recurrence of non-Gaussian correlations in a quantum many-body system
Thomas Schweigler, Marek Gluza, Mohammadamin Tajik +8
Gaussian models provide an excellent effective description of many quantum many-body systems ranging from condensed matter systems all the way to neutron stars. Gaussian states are…
Out-of-horizon correlations following a quench in a relativistic quantum field theory
Ivan Kukuljan, Spyros Sotiriadis, Gabor Takacs
One of the manifestations of relativistic invariance in non-equilibrium quantum field theory is the "horizon effect" a.k.a. light-cone spreading of correlations: starting from an i…
Correlation Functions of the Quantum Sine-Gordon Model in and out of Equilibrium
Ivan Kukuljan, Spyros Sotiriadis, Gabor Takacs
Complete information on the equilibrium behaviour and dynamics of a quantum field theory (QFT) is provided by multipoint correlation functions. However, their theoretical calculati…
Non-equilibrium quantum transport in presence of a defect: the non-interacting case
Marko Ljubotina, Spyros Sotiriadis, Tomaž Prosen
We study quantum transport after an inhomogeneous quantum quench in a free fermion lattice system in the presence of a localised defect. Using a new rigorous analytical approach fo…
Quenches from gaussian bosons to Tonks-Girardeau gas: stationary states and effects of a confining potential
Alvise Bastianello, Mario Collura, Spyros Sotiriadis
We consider the general problem of quenching an interacting Bose gas from the noninteracting regime to the strong repulsive case described by the Tonks-Girardeau limit, with the in…
Equilibration in one-dimensional quantum hydrodynamic systems
Spyros Sotiriadis
We study quench dynamics and equilibration in one-dimensional quantum hydrodynamics, which provides effective descriptions of the density and velocity fields in gapless quantum gas…
Quasi locality of the GGE in interacting-to-free quenches in relativistic field theories
Alvise Bastianello, Spyros Sotiriadis
We study the quench dynamics in continuous relativistic quantum field theory, more specifically the locality properties of the large time stationary state. After a quantum quench i…
Cluster expansion for ground states of local Hamiltonians
Alvise Bastianello, Spyros Sotiriadis
A central problem in many-body quantum physics is the determination of the ground state of a thermodynamically large physical system. We construct a cluster expansion for ground st…
Initial states in integrable quantum field theory quenches from an integral equation hierarchy
D. X. Horvath, S. Sotiriadis, G. Takacs
We consider the problem of determining the initial state of integrable quantum field theory quenches in terms of the post-quench eigenstates. The corresponding overlaps are a funda…
Memory-preserving equilibration after a quantum quench in a 1d critical model
Spyros Sotiriadis
One of the fundamental principles of statistical physics is that only partial information about a system's state is required for its macroscopic description. This is not only true…
Equilibration and GGE in interacting-to-free Quantum Quenches in dimensions d>1
Spyros Sotiriadis, Gabriele Martelloni
Ground states of interacting QFTs are non-gaussian states, i.e. their connected n-point correlation functions do not vanish for n>2, in contrast to the free QFT case. We show that…