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Title: Geometric quench and nonequilibrium dynamics of fractional quantum Hall states

Journal Article · · Physical Review. B
 [1];  [2];  [3]
  1. Zhejiang Univ., Hangzhou (China); Freie Univ. Berlin (Germany). Dahlem Center for Complex Quantum Systems
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berkeley, CA (United States)
  3. Univ. of Leeds, Leeds (United Kingdom)

In this work, we introduce a quench of the geometry of Landau level orbitals as a probe of nonequilibrium dynamics of fractional quantum Hall (FQH) states. We show that such geometric quenches induce coherent many-body dynamics of neutral degrees of freedom of FQH fluids. The simplest case of mass anisotropy quench can be experimentally implemented as a sudden tilt of the magnetic field, and the resulting dynamics reduces to the harmonic motion of the spin-2 "graviton" mode, i.e., the long-wavelength limit of the Girvin-MacDonald-Platzman magnetoroton. We derive an analytical description of the graviton dynamics using the bimetric theory of FQH states and find agreement with exact numerical simulations at short times. Furthermore, we show that certain types of geometric quenches excite higher-spin collective modes, thus establishing their existence in a microscopic model and motivating an extension of geometric theories of FQH states.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); Engineering and Physical Sciences Research Council (EPSRC); National Science Foundation (NSF)
Grant/Contract Number:
AC02-05CH11231; SC0002140; DMR-1206648; DMR-1420709; EP/P009409/1; EP/R020612/1
OSTI ID:
1656471
Alternate ID(s):
OSTI ID: 1479143
Journal Information:
Physical Review. B, Vol. 98, Issue 15; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 22 works
Citation information provided by
Web of Science

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Cited By (4)

Viscoelastic response of quantum Hall fluids in a tilted field journal January 2019
Viscoelastic response of quantum Hall fluids in a tilted field text January 2018
Chiral Gravitons in Fractional Quantum Hall Liquids text January 2019
Interaction-dependent anisotropy of fractional quantum Hall states text January 2019