Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Horváth, Dávid X."'
The statistics of fluctuations on large regions of space encodes universal properties of many-body systems. At equilibrium, it is described by thermodynamics. However, away from equilibrium such as after quantum quenches, the fundamental principles a
Externí odkaz:
http://arxiv.org/abs/2411.14406
Autor:
Horvath, David X., Rylands, Colin
Publikováno v:
Physical Review A 109 (2024) 043302
Unless constrained by symmetry, measurement of an observable on an ensemble of identical quantum systems returns a distribution of values which are encoded in the full counting statistics. While the mean value of this distribution is important for de
Externí odkaz:
http://arxiv.org/abs/2312.02929
Publikováno v:
JHEP 02 (2024) 053
We study the R\'enyi entanglement entropies along the massless renormalisation group flow that connects the tricritical and critical Ising field theories. Similarly to the massive integrable field theories, we derive a set of bootstrap equations, fro
Externí odkaz:
http://arxiv.org/abs/2309.17199
Topological excitations or defects such as solitons are ubiquitous throughout physics, supporting numerous interesting phenomena like zero energy modes with exotic statistics and fractionalized charges. In this paper, we study such objects through th
Externí odkaz:
http://arxiv.org/abs/2306.15532
Publikováno v:
Journal of High Energy Physics 04(2023)091
The effect of unstable quasiparticles in the out-of-equilibrium dynamics of certain integrable systems has been the subject of several recent studies. In this paper we focus on the stationary value of the entanglement entropy density, its growth rate
Externí odkaz:
http://arxiv.org/abs/2209.11290
Autor:
Scopa, Stefano, Horváth, Dávid X.
Publikováno v:
J. Stat. Mech. (2022) 083104
We investigate the non-equilibrium dynamics of the symmetry-resolved R\'enyi entropies in a one-dimensional gas of non-interacting spinless fermions by means of quantum generalised hydrodynamics, which recently allowed to obtain very accurate results
Externí odkaz:
http://arxiv.org/abs/2205.02924
In this paper, we apply the form factor bootstrap approach to branch point twist fields in the $q$-state Potts model for $q\leq 3$. For $q=3$ this is an integrable interacting quantum field theory with an internal discrete $\mathbb{Z}_3$ symmetry and
Externí odkaz:
http://arxiv.org/abs/2108.10935
Publikováno v:
SciPost Phys. 12, 088 (2022)
In this paper we continue the programme initiated in Part I, that is the study of entanglement measures in the sine-Gordon model. In both parts, we have focussed on one specific technique, that is the well-known connection between branch point twist
Externí odkaz:
http://arxiv.org/abs/2105.13982
Publikováno v:
SciPost Phys. 10, 132 (2021)
The quantum sine-Gordon model is the simplest massive interacting integrable quantum field theory whose two-particle scattering matrix is generally non-diagonal. As such, it is a model that has been extensively studied, especially in the context of t
Externí odkaz:
http://arxiv.org/abs/2103.08492
U(1) symmetry resolved entanglement in free 1+1 dimensional field theories via form factor bootstrap
Publikováno v:
JHEP 05 (2021) 197
We generalise the form factor bootstrap approach to integrable field theories with U(1) symmetry to derive matrix elements of composite branch-point twist fields associated with symmetry resolved entanglement entropies. The bootstrap equations are so
Externí odkaz:
http://arxiv.org/abs/2103.03197