Simplified parquet equations for the Anderson impurity model: comparison with numerically exact solutions
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F17%3A00482232" target="_blank" >RIV/68378271:_____/17:00482232 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/17:10362639
Result on the web
<a href="http://dx.doi.org/10.12693/APhysPolA.131.1042" target="_blank" >http://dx.doi.org/10.12693/APhysPolA.131.1042</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.12693/APhysPolA.131.1042" target="_blank" >10.12693/APhysPolA.131.1042</a>
Alternative languages
Result language
angličtina
Original language name
Simplified parquet equations for the Anderson impurity model: comparison with numerically exact solutions
Original language description
We use an analytic solver for the single-impurity Anderson model based on simplified parquet equations to describe the Kondo asymptotics. This scheme uses a two-particle self-consistency to control the strong-coupling Kondo critical behavior of this model at half filling. The equations can be written in the real-frequency representation, which gives us direct access to spectral functions unlike numerical schemes in the Matsubara formalism. We compare our results to those obtained by second-order perturbation theory, numerical renormalization group, and continuous-time quantum Monte Carlo in order to assess the reliability of this approximation.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
Acta Physica Polonica. A
ISSN
0587-4246
e-ISSN
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Volume of the periodical
131
Issue of the periodical within the volume
4
Country of publishing house
PL - POLAND
Number of pages
3
Pages from-to
1042-1044
UT code for WoS article
000401331400048
EID of the result in the Scopus database
2-s2.0-85019575278