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Title: Fast Real-Time Time-Dependent Density Functional Theory Calculations with the Parallel Transport Gauge

Abstract

Real-time time-dependent density functional theory (RT-TDDFT) is known to be hindered by the very small time step (attosecond or smaller) needed in the numerical simulation, because of the fast oscillation of electron wave functions, which significantly limits its range of applicability for the study of ultrafast dynamics. In this paper, we demonstrate that such oscillation can be considerably reduced by optimizing the gauge choice using the parallel transport formalism. RT-TDDFT calculations can thus be significantly accelerated using a combination of the parallel transport gauge and implicit integrators, and the resulting scheme can be used to accelerate any electronic structure software that uses a Schrödinger representation. Here, using absorption spectrum, ultrashort laser pulse, and Ehrenfest dynamics calculations for example, we show that the new method can utilize a time step that is on the order of 10–100 attoseconds using a planewave basis set. Thanks to the significant increase of the size of the time step, we also demonstrate that the new method is more than 10 times faster, in terms of the wall clock time, when compared to the standard explicit fourth-order Runge–Kutta time integrator for silicon systems ranging from 32 to 1024 atoms.

Authors:
ORCiD logo [1];  [1];  [2]; ORCiD logo [3]
+ Show Author Affiliations
  1. Univ. of California, Berkeley, CA (United States)
  2. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  3. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Publication Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR)
OSTI Identifier:
1543629
Grant/Contract Number:  
AC02-05CH11231; SC0017867
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Chemical Theory and Computation
Additional Journal Information:
Journal Volume: 14; Journal Issue: 11; Journal ID: ISSN 1549-9618
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Chemistry; Physics

Citation Formats

Jia, Weile, An, Dong, Wang, Lin -Wang, and Lin, Lin. Fast Real-Time Time-Dependent Density Functional Theory Calculations with the Parallel Transport Gauge. United States: N. p., 2018. Web. doi:10.1021/acs.jctc.8b00580.
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Jia, Weile, An, Dong, Wang, Lin -Wang, & Lin, Lin. Fast Real-Time Time-Dependent Density Functional Theory Calculations with the Parallel Transport Gauge. United States. https://doi.org/10.1021/acs.jctc.8b00580
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Jia, Weile, An, Dong, Wang, Lin -Wang, and Lin, Lin. Tue . "Fast Real-Time Time-Dependent Density Functional Theory Calculations with the Parallel Transport Gauge". United States. https://doi.org/10.1021/acs.jctc.8b00580. https://www.osti.gov/servlets/purl/1543629.
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@article{osti_1543629,
title = {Fast Real-Time Time-Dependent Density Functional Theory Calculations with the Parallel Transport Gauge},
author = {Jia, Weile and An, Dong and Wang, Lin -Wang and Lin, Lin},
abstractNote = {Real-time time-dependent density functional theory (RT-TDDFT) is known to be hindered by the very small time step (attosecond or smaller) needed in the numerical simulation, because of the fast oscillation of electron wave functions, which significantly limits its range of applicability for the study of ultrafast dynamics. In this paper, we demonstrate that such oscillation can be considerably reduced by optimizing the gauge choice using the parallel transport formalism. RT-TDDFT calculations can thus be significantly accelerated using a combination of the parallel transport gauge and implicit integrators, and the resulting scheme can be used to accelerate any electronic structure software that uses a Schrödinger representation. Here, using absorption spectrum, ultrashort laser pulse, and Ehrenfest dynamics calculations for example, we show that the new method can utilize a time step that is on the order of 10–100 attoseconds using a planewave basis set. Thanks to the significant increase of the size of the time step, we also demonstrate that the new method is more than 10 times faster, in terms of the wall clock time, when compared to the standard explicit fourth-order Runge–Kutta time integrator for silicon systems ranging from 32 to 1024 atoms.},
doi = {10.1021/acs.jctc.8b00580},
journal = {Journal of Chemical Theory and Computation},
number = 11,
volume = 14,
place = {United States},
year = {Tue Oct 23 00:00:00 EDT 2018},
month = {Tue Oct 23 00:00:00 EDT 2018}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1021/acs.jctc.8b00580
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Cited by: 13 works
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Figures / Tables:

Table 1 Table 1: Error at $T$ = 100 for the 1D example.
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    Works referencing / citing this record:

    Propagation of maximally localized Wannier functions in real-time TDDFT
    journal, May 2019

    • Yost, Dillon C.; Yao, Yi; Kanai, Yosuke
    • The Journal of Chemical Physics, Vol. 150, Issue 19
    • DOI: 10.1063/1.5095631

    Propagation of maximally localized Wannier functions in real-time TDDFT
    text, January 2019

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      Figures / Tables found in this record:

      Table 1 (p. 6)table
      Figure 1 (p. 7)figure
      Figure 2 (p. 10)figure
      Figure 3 (p. 11)figure
      Figure 4 (p. 14)figure
      Figure 5 (p. 15)figure
      Figure 6 (p. 16)figure
      Figure 7 (p. 22)figure
      Table 2 (p. 22)table
      Figure 8 (p. 23)figure
      Figure 9 (p. 27)figure
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