Bulletin of the American Physical Society
APS March Meeting 2023
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session A32: Nonequilibrium Dynamics in the Solid State
8:00 AM–11:12 AM,
Monday, March 6, 2023
Room: Room 224
Sponsoring
Unit:
DCMP
Chair: Yicheng Zhang, University of Oklahoma
Abstract: A32.00014 : Dynamical quantum phase transition in mesoscopic superconducting system*
10:36 AM–10:48 AM
Presenter:
Kacper Wrzesniewski
(Adam Mickiewicz University)
Authors:
Kacper Wrzesniewski
(Adam Mickiewicz University)
Ireneusz Weymann
(Adam Mickiewicz University)
Nicholas Sedlmayr
(Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland)
Tadeusz Doma?ski
(Institute of Physics, Maria Curie-Sklodowska University, 20-031 Lublin, Poland)
Furthermore, we examine the singlet-doublet dynamical phase transition upon quantum quench traversing the phase boundaries in parameter space between two distinct ground states. We evaluate Loschmidt echo and find non-analytic features in the associated return rate. The cusps arise periodically at critical times and coincide with the local extrema in the pairing correlation function manifesting occurrence of dynamical phase transition.
*This work is supported by the National Science Centre (Poland) under the grants 2017/27/B/ST3/00621 (KW, IW), 2017/27/B/ST3/01911 (TD), and 2019/35/B/ST3/03625 (NS).
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