Bulletin of the American Physical Society
APS March Meeting 2022
Volume 67, Number 3
Monday–Friday, March 14–18, 2022; Chicago
Session T45: Kardar-Parisi-Zhang Universality in Quantum Many Body Systems
11:30 AM–2:30 PM,
Thursday, March 17, 2022
Room: McCormick Place W-375D
Sponsoring
Units:
DCMP DAMOP
Chair: Sarang Gopalakrishnan
Abstract: T45.00002 : Initial condition dependence of KPZ universality: from soft matter experiments to quantum spin chains*
12:06 PM–12:42 PM
Presenter:
Kazumasa A Takeuchi
(University of Tokyo)
Author:
Kazumasa A Takeuchi
(University of Tokyo)
In the talk, I will first review main outcomes from the studies of the classical KPZ systems, mainly following experimental results on growing interfaces of liquid-crystal turbulence [1]. Emphasis will be put on the three representative universality subclasses and their characteristics, as well as the variational formula which can describe fluctuation properties from general initial conditions (see [2] and references therein, especially Quastel & Remenik 2014). Then I will describe how to "translate" these results to the problem of the quantum spin chains. In particular, I will focus on the non-Gaussian distribution of the polarization transfer found by quantum-gas microscopy by Bloch's group (Wei et al., arXiv:2107.00038) and describe our attempt to characterize it in terms of crossover between different universality subclasses.
The new results are from joint work with Y. T. Fukai, D. Wei, S. Gopalakrishnan, I. Bloch and J. Zeiher.
*I acknowledge support in part by JSPS KAKENHI (JP25103004, JP25707033, JP19H05800, JP20H01826) and by JST PRESTO (JPMJPR18L6).
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