Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Ribic, Tin"'
Publikováno v:
Phys. Rev. B 101, 165101 (2020)
In the Falicov-Kimball model, a model for (annealed) disorder, we expect weak localization corrections to the optical conductivity. However, we get such weak localization effects only when employing a pp-ladder approximation in the dual fermion appro
Externí odkaz:
http://arxiv.org/abs/1912.01908
Autor:
Kauch, Anna, Pudleiner, Petra, Astleithner, Katharina, Thunström, Patrik, Ribic, Tin, Held, Karsten
Publikováno v:
Phys. Rev. Lett. 124, 047401 (2020)
The interaction of light with solids gives rise to new bosonic quasiparticles, with the exciton being---undoubtedly---the most famous of these polaritons. While excitons are the generic polaritons of semiconductors, we show that for strongly correlat
Externí odkaz:
http://arxiv.org/abs/1902.09342
Publikováno v:
Phys. Rev. B 98, 125106 (2018)
The dual fermion (DF) method allows for calculating corrections due to non-local correlations relative to an effective impurity model. Choosing the impurity as that of a dynamical mean field theory (DMFT) solution at self-consistency is popular, and
Externí odkaz:
http://arxiv.org/abs/1805.10996
Publikováno v:
Phys. Rev. B 95, 155130 (2017)
Local n-particle vertex functions represent the crucial ingredient for all diagrammatic extensions of dynamical mean field theory (DMFT). Hitherto their application has been restricted -with a few exceptions- to the n=2-particle vertex while higher-o
Externí odkaz:
http://arxiv.org/abs/1612.03011
Autor:
Gunacker, Patrik, Wallerberger, Markus, Ribic, Tin, Hausoel, Andreas, Sangiovanni, Giorgio, Held, Karsten
Publikováno v:
Phys. Rev. B 94, 125153 (2016)
We derive the improved estimators for general interactions and employ these for the continuous-time quantum Monte Carlo method. Using a worm algorithm we show how measuring higher-ordered correlators leads to an improved high-frequency behavior in ir
Externí odkaz:
http://arxiv.org/abs/1607.01211
Autor:
Ribic, Tin
Die vorliegende Arbeit besch��ftigt sich mit effektiven Feynman-diagrammatischen Methoden f��r die Beschreibung starker elektronischer Korrelationseffekte in Festk��rpern. Exakte numerische L��sungen f��r wechselwirkende Systeme m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::649627ce6b92be5d8ba711ad23931618
Autor:
Ribic, Tin
Das Falicov-Kimball-Modell ist eines der einfachsten Quantenmechanischen Gittermodelle, dass Korrelationen zeigt, welche nicht trivial sind. Auf dem Niveau von Zweiteilchengr����en, sogenannten Vertexfunktionen, werden die auftretenden Korrel
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::997ff9d69033529a30189da6acfbd0fc