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CATEGORIES:Theoretical Physics Seminars
SUMMARY:Breakdown of hydrodynamics and emergence of univer
sality in far-from-equilibrium regimes - Joaquin R
odriguez Nieva (Stanford University)
DTSTART:20220519T150000Z
DTEND:20220519T163000Z
UID:TALK4765AT
URL:/talk/index/4765
DESCRIPTION:Hydrodynamics is a universal theory of thermalizat
ion in chaotic many-body systems\, both classical
and quantum. It is minimally described by symmetri
es and conservation laws under the assumption of l
ocal thermodynamic equilibrium. Despite its univer
sal character\, there are many important scenarios
in which the usual hydrodynamic picture can break
down\, giving rise to qualitatively distinct dyna
mical regimes with anomalous scaling exponents. In
this talk\, I will discuss two such scenarios. In
the first case\, I describe thermalization of two
-dimensional spin systems and argue that such syst
ems exhibit slow thermalization due to the existen
ce of slow modes with quasi-long-range character.
Such modes give rise to a universal self-similar r
egime with anomalous scaling exponents. In the sec
ond case\, I discuss microscopic models with kinem
atic constraints---fractonic fluids---in which the
hydrodynamic description is intrinsically unstabl
e\, leading to a higher-dimensional analogue of th
e Kardar-Parisi-Zhang (KPZ) universality class. Ou
r understanding of anomalous scaling regimes beyon
d hydrodynamics can help us create more systematic
ways to classify and characterize universality in
systems out of equilibrium.\n\nReferences:\nJFRN\
, Pineiro Orioli\, Marino\, arXiv:2106.00023\nGlor
ioso\, Guo\, JFRN\, Lucas\, arXiv:2105.13365
LOCATION:https://bham-ac-uk.zoom.us/j/8268225040
CONTACT:Dr Hannah Price
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