Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session Y20: Statistical Mechanics and Thermodynamics of Quantum Systems
11:15 AM–1:15 PM,
Friday, March 9, 2018
LACC
Room: 308B
Sponsoring
Unit:
DQI
Chair: Takahiro Sagawa, University of Tokyo
Abstract ID: BAPS.2018.MAR.Y20.4
Abstract: Y20.00004 : Scrambling of quantum information in quantum many-body systems*
11:51 AM–12:03 PM
Presenter:
Eiki Iyoda
(Univ of Tokyo)
Authors:
Eiki Iyoda
(Univ of Tokyo)
Takahiro Sagawa
(Univ of Tokyo)
In this study, we systematically investigate dynamics of TMI in quantum many-body systems by using numerical exact diagonalization. By studying quantum spin chains, we clarify that scrambling is an independent property of integrability of Hamiltonians; TMI becomescan be negative for most of the initial states, or positive for both integrable and non-integrable system, making a sharp contrast to conventional quantum chaos. In addition,Furthermore, we calculate TMI in the Sachdev-Ye-Kitaev model with four-body and disordered interaction of complex fermions, and. Wwe foundfind that disorder does not lead to slow dynamics but instead makes scrambling smoother than a clean case.
Reference: E. Iyoda and T. Sagawa, arXiv:1704.04850.
*This work is supported by JSPS KAKENHI Grant No. JP16H02211, No. JP25103003, and No. JP15K20944.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.Y20.4
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