Výsledky vyhledávání - "Werther, Michael"

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Non-Markovian Vibrational Relaxation Dynamics at Surfaces

Autor: Fischer, Eric W., Werther, Michael, Bouakline, Foudhil, Grossmann, Frank, Saalfrank, Peter

Publikováno v: J. Chem. Phys. 156, 214702 (2022)

Vibrational dynamics of adsorbates near surfaces plays both an important role for applied surface science and as model lab for studying fundamental problems of open quantum systems. We employ a previously developed model for the relaxation of a D-Si-

Externí odkaz: http://arxiv.org/abs/2203.09820

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Dissertation/ Thesis

The multi Davydov-Ansatz: Apoptosis of moving Gaussian basis functions with applications to open quantum system dynamics

Autor: Werther, Michael

We utilize the multi Davydov-Ansatz, an Ansatz of the bosonic many-body wave function in terms of moving Gaussian basis functions, to illuminate several aspects of open quantum system dynamics and quantum many-body theory. By two artifices alongside

Externí odkaz: https://tud.qucosa.de/id/qucosa%3A72405
https://tud.qucosa.de/api/qucosa%3A72405/attachment/ATT-0/

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Apoptosis of moving, non-orthogonal basis functions in many-particle quantum dynamics

Autor: Werther, Michael, Grossmann, Frank

Publikováno v: Phys. Rev. B 101, 174315 (2020)

Due to the exponential increase of the numerical effort with the number of degrees of freedom, moving basis functions have a long history in quantum dynamics. In addition, spawning of new basis functions is routinely applied. Here we advocate the opp

Externí odkaz: http://arxiv.org/abs/1908.08240

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Including temperature in a wavefunction description of the dynamics of the quantum Rabi model

Autor: Werther, Michael, Grossmann, Frank

We present a wavefunction methodology to account for finite temperature initial conditions in the quantum Rabi model. The approach is based on the Davydov-Ansatz together with a statistical sampling of the canonical harmonic oscillator initial densit

Externí odkaz: http://arxiv.org/abs/1708.03460

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