Variational dynamics of the sub-Ohmic spin-boson model on the basis of multiple Davydov D1 states

The Journal of Chemical Physics
Lu WangYang Zhao

Abstract

Dynamics of the sub-Ohmic spin-boson model is investigated by employing a multitude of the Davydov D1 trial states, also known as the multi-D1 Ansatz. Accuracy in dynamics simulations is improved significantly over the single D1 Ansatz, especially in the weak system-bath coupling regime. The reliability of the multi-D1 Ansatz for various coupling strengths and initial conditions is also systematically examined, with results compared closely with those of the hierarchy equations of motion and the path integral Monte Carlo approaches. In addition, a coherent-incoherent phase crossover in the nonequilibrium dynamics is studied through the multi-D1 Ansatz. The phase diagram is obtained with a critical point sc = 0.4. For sc < s < 1, the coherent-to-incoherent crossover occurs at a certain coupling strength, while the coherent state recurs at a much larger coupling strength. For s < sc, only the coherent phase exists.

References

May 4, 2002·Science·D VionM H Devoret
Oct 13, 2007·Physical Review Letters·Karyn Le HurWalter Hofstetter
Jul 5, 2012·The Journal of Chemical Physics·Jun YeJianshu Cao
Feb 7, 2013·Physical Review Letters·Denis Kast, Joachim Ankerhold
Mar 8, 2013·The Journal of Chemical Physics·Ning WuYang Zhao
May 10, 2013·The Journal of Chemical Physics·Jin SunYang Zhao
Aug 2, 2013·The Journal of Chemical Physics·Liwei DuanYang Zhao
Sep 17, 2013·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yao YaoYang Zhao
Nov 5, 2013·The Journal of Chemical Physics·Zhiguo LüYang Zhao

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Citations

Apr 17, 2016·The Journal of Chemical Physics·Tianrui DengYang Zhao
Feb 6, 2017·The Journal of Chemical Physics·Yuta FujihashiYang Zhao
Apr 8, 2017·The Journal of Chemical Physics·Lu WangYang Zhao
Aug 9, 2018·Physical Chemistry Chemical Physics : PCCP·Darius AbramaviciusLeonas Valkunas
Apr 16, 2020·Physical Chemistry Chemical Physics : PCCP·Mantas JakučionisDarius Abramavičius
Aug 10, 2017·Journal of Molecular Modeling·Marcelo Lopes Pereira Junior, Luiz Antonio Ribeiro Junior
Aug 24, 2017·The Journal of Chemical Physics·Vladimir ChorošajevDarius Abramavicius
May 17, 2019·The Journal of Chemical Physics·Zhongkai HuangYang Zhao
Mar 3, 2019·The Journal of Chemical Physics·Qianlong WangJianlan Wu
Jun 24, 2019·The Journal of Chemical Physics·Richard HartmannWalter T Strunz
Jul 1, 2019·The Journal of Chemical Physics·Hasan Rahman, Ulrich Kleinekathöfer
Nov 11, 2020·The Journal of Chemical Physics·Wangjun HuYang Zhao
May 27, 2021·Physical Chemistry Chemical Physics : PCCP·Kewei SunYang Zhao
Jul 10, 2021·The Journal of Chemical Physics·Vytautas BubilaitisDarius Abramavicius
Jan 23, 2020·The Journal of Physical Chemistry Letters·Jiarui ZengYao Yao
Oct 7, 2021·The Journal of Physical Chemistry Letters·Yiying YanYang Zhao

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