Rigorous Wilsonian renormalization group for impurity models with a spectral gap

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Rigorous Wilsonian renormalization group for impurity models with a spectral gap

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Rigorous Wilsonian renormalization group for impurity models with a spectral gap

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GF23-05263K" target="_blank" >GF23-05263K: Supravodivé nanohybridy mimo rovnováhu</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review B

ISSN

2469-9950

e-ISSN

2469-9969

Svazek periodika

108

Číslo periodika v rámci svazku

19

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

17

Strana od-do

195123

Kód UT WoS článku

001112330600010

EID výsledku v databázi Scopus

2-s2.0-85177993723