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Time-Dependent Gutzwiller Approximation: Theory and Applications

  • The time-dependent Gutzwiller approximation is rederived on the basis of a variational wave function which is a direct product of a Slater determinant and a coherent state. The latter can be related to the slave-boson formulation by Kotliar and Ruckenstein, and our approach offers a convenient way to generalize the theory towards the implementation of symmetry-broken states and the study of non-equilibrium phenomena. We discuss the concept with regard to applications in the linear response limit and for quenched antiferromagnetic order for which we evaluate the optical conductivity in non-equilibrium situations.

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Author: Katharina Noatschk, Christian Martens, Götz SeiboldORCiD
URL:https://link.springer.com/article/10.1007/s10948-019-05406-z#Sec1
DOI:https://doi.org/10.1007/s10948-019-05406-z
Title of the source (English):Journal of Superconductivity and Novel Magnetism
Document Type:Scientific journal article peer-reviewed
Language:English
Year of publication:2020
Tag:Gutzwiller approximation; Hubbard model; Non-equilibrium
Volume/Year:33
Issue number:8
First Page:2389
Last Page:2393
Faculty/Chair:Fakultät 1 MINT - Mathematik, Informatik, Physik, Elektro- und Informationstechnik / FG Computational Physics
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