Mean-field approximation for thermodynamic and spectral functions of correlated electrons: strong coupling and arbitrary band filling
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00482157" target="_blank" >RIV/68378271:_____/17:00482157 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1103/PhysRevB.95.165113" target="_blank" >http://dx.doi.org/10.1103/PhysRevB.95.165113</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.95.165113" target="_blank" >10.1103/PhysRevB.95.165113</a>
Alternative languages
Result language
angličtina
Original language name
Mean-field approximation for thermodynamic and spectral functions of correlated electrons: strong coupling and arbitrary band filling
Original language description
We present a construction of a mean-field theory for thermodynamic and spectral properties of correlated electrons reliable in the strong-coupling limit. We introduce an effective interaction determined self-consistently from the reduced parquet equations. It is a static local approximation of the two-particle irreducible vertex, the kernel of a potentially singular Bethe-Salpeter equation. The effective interaction enters the Ward identity from which a thermodynamic self-energy, renormalizing the one-electron propagators, is determined. The dynamical Schwinger-Dyson equation with the thermodynamic propagators is then used to calculate the spectral properties. The thermodynamic and spectral properties of correlated electrons are in this way determined on the same footing and in a consistent manner. Such a mean-field approximation is analytically controllable and free of unphysical behavior and spurious phase transitions.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/GA15-14259S" target="_blank" >GA15-14259S: Quantum criticality in strongly correlated electron systems: Consistent description of spectral and thermodynamic properties</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
95
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
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UT code for WoS article
000401765800005
EID of the result in the Scopus database
2-s2.0-85017228308