Details
| Original language | English |
|---|---|
| Article number | 241106 |
| Journal | Physical Review B |
| Volume | 92 |
| Issue number | 24 |
| Publication status | Published - 9 Dec 2015 |
Abstract
We present a method for simulating the time evolution of one-dimensional correlated electron-phonon systems which combines the time-evolving block decimation algorithm with a dynamical optimization of the local basis. This approach can reduce the computational cost by orders of magnitude when boson fluctuations are large. The method is demonstrated on the nonequilibrium Holstein polaron by comparison with exact simulations in a limited functional space and on the scattering of an electronic wave packet by local phonon modes. Our study of the scattering problem reveals a rich physics including transient self-trapping and dissipation.
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physical Review B, Vol. 92, No. 24, 241106, 09.12.2015.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Matrix-product-state method with a dynamical local basis optimization for bosonic systems out of equilibrium
AU - Brockt, C.
AU - Dorfner, F.
AU - Vidmar, L.
AU - Heidrich-Meisner, F.
AU - Jeckelmann, E.
N1 - Publisher Copyright: © 2015 American Physical Society. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.
PY - 2015/12/9
Y1 - 2015/12/9
N2 - We present a method for simulating the time evolution of one-dimensional correlated electron-phonon systems which combines the time-evolving block decimation algorithm with a dynamical optimization of the local basis. This approach can reduce the computational cost by orders of magnitude when boson fluctuations are large. The method is demonstrated on the nonequilibrium Holstein polaron by comparison with exact simulations in a limited functional space and on the scattering of an electronic wave packet by local phonon modes. Our study of the scattering problem reveals a rich physics including transient self-trapping and dissipation.
AB - We present a method for simulating the time evolution of one-dimensional correlated electron-phonon systems which combines the time-evolving block decimation algorithm with a dynamical optimization of the local basis. This approach can reduce the computational cost by orders of magnitude when boson fluctuations are large. The method is demonstrated on the nonequilibrium Holstein polaron by comparison with exact simulations in a limited functional space and on the scattering of an electronic wave packet by local phonon modes. Our study of the scattering problem reveals a rich physics including transient self-trapping and dissipation.
UR - http://www.scopus.com/inward/record.url?scp=84952312683&partnerID=8YFLogxK
U2 - 10.1103/physrevb.92.241106
DO - 10.1103/physrevb.92.241106
M3 - Article
VL - 92
JO - Physical Review B
JF - Physical Review B
SN - 2469-9950
IS - 24
M1 - 241106
ER -