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 B62: Quantum Many Body Systems & Methods I
11:30 AM–2:18 PM,
Monday, March 6, 2023
Room: Room 417
Sponsoring
Unit:
DCOMP
Chair: Jack Wells, Nvidia
Abstract: B62.00001 : Dynamical properties of the Holstein chain from finite-temperature density matrix renormalization group method*
11:30 AM–11:42 AM
Presenter:
Fabian Heidrich-Meisner
(University of Goettingen)
Authors:
Fabian Heidrich-Meisner
(University of Goettingen)
Janez Bonca
(Josef Stefan Institute Ljubljana)
David Jansen
(University of Goettingen)
functions and conductivities of the Holstein polaron and systems with
a finite electron density in a Holstein chain. Our numerical approach is
based on the selection of optimal phonons modes based on the importance
selection of single-site reduced density matrix eigenstates, called local basis
optimization. We combine this approach with purification to obtain
the low-temperature thermodynamics and extract polaron spectral
functions from real-time simulations [1]. In a next step, we optimize
the algorithm by using the time-dependent variational principle
and parallelization to compute the optical conductivity of the Holstein
polaron, the bipolaron, and for systems at a finite electron filling.
We discuss our results using the Born-Oppenheimer surface picture
for Holstein dimers [2].
*This research was supported by the Deutsche Forschungsgemeinschaft (DFG) via CRC 1073.JB acknowledges the support by the program P1-0044 of the Slovenian Research Agency, support from the Centre for Integrated Nanotechnologies,a U.S. Department of Energy, Office of Basic Energy Sciences user facility, and funding from the Stewart Blusson Quantum Matter Institute.
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700