Rigorous Wilsonian renormalization group for impurity models with a spectral gap

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F23%3A00583483" target="_blank" >RIV/68378271:_____/23:00583483 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.108.195123" target="_blank" >https://doi.org/10.1103/PhysRevB.108.195123</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.108.195123" target="_blank" >10.1103/PhysRevB.108.195123</a>

Result language
angličtina
Original language name
Rigorous Wilsonian renormalization group for impurity models with a spectral gap
Original language description
The Anderson impurity model (AIM) has long served as a cornerstone in the study of correlated electron systems. While numerical renormalization group (RG) offers great flexibility for metallic reservoirs, it becomes impossible in an unbiased way when a spectral gap A opens up in the tunneling density of states. The only known exception is provided by the superconducting bath. In this paper, we lift these limitations by developing a numerical RG procedure that employs a discretization of the gapped tunneling densities of states into patches that accumulate at the gap edges. This reveals an unusual double scaling, which is a shared behavior between the superconducting and the scalar gapped AIMs.
Czech name
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Czech description
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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.)

Project
<a href="/en/project/GF23-05263K" target="_blank" >GF23-05263K: Superconducting nanohybrids out of equilibrium</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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