Zobrazeno 1 - 3
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pro vyhledávání: '"Oelsen, E. v."'
We investigate the applicability of the two existing versions of a time-dependent Gutzwiller approximation (TDGA) beyond the frequently used limit of infinite spatial dimensions. To this end, we study the two-particle response functions of a two-site
Externí odkaz:
http://arxiv.org/abs/1401.5624
Publikováno v:
New J. Phys. 13 (2011) 113031
We formulate a multi-band generalisation of the time-dependent Gutzwiller theory. This approach allows for the calculation of general two-particle response functions, which are crucial for an understanding of various experiments in solid-state physic
Externí odkaz:
http://arxiv.org/abs/1107.1631
Publikováno v:
Phys. Rev. Lett. 107, 076402 (2011)
Based on the variational Gutzwiller theory, we present a method for the computation of response functions for multiband Hubbard models with general local Coulomb interactions. The improvement over the conventional random-phase approximation is exempl
Externí odkaz:
http://arxiv.org/abs/1107.1354