Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session K49: Precision Many-Body Physics IV: Dynamics
3:00 PM–6:00 PM,
Tuesday, March 15, 2022
Room: McCormick Place W-471B
Sponsoring
Units:
DCOMP DAMOP DCMP
Chair: Utkarsh Agrawal, University of Massachusetts, Amherst
Abstract: K49.00001 : Quantum fluctuations of the out-of-equilibrium one-dimensional Bose gas described by Generalized Hydrodynamics*
3:00 PM–3:36 PM
Abstract 
Presenter:
JEROME DUBAIL
(Universite de Lorraine)
Author:
JEROME DUBAIL
(Universite de Lorraine)
Collaborations:
Paola Ruggiero, Stefano Scopa, Pasquale Calabrese, Benjamin Doyon
*Considerable progress has taken place recently in modeling the large-scale dynamics of one-dimensional quantum many-body systems that are integrable or nearly integrable, thanks to the advent of Generalized Hydrodynamics. In particular, Generalized Hydrodynamics provides a computationally efficient tool for simulating experiments on one-dimensional Bose gases. Like any other hydrodynamic theory, it consists of a simplified description of the gas in terms of a reduced number of thermodynamic quantities that depend continuously on position, and evolve according to classical Euler equations. Here we aim at reconstructing some of the features of the quantum fluid that are lost in that description, in particular the quantum fluctuations and correlations at equal time that originate from the propagation of phonons in the fluid. The resulting framework takes the form of a spatially- and time-dependent multi-component Luttinger liquid, which can be used to efficiently compute correlation funct
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