Publication
Title
Electron-hole symmetry and solutions of Richardson pairing model
Author
Abstract
Richardson approach provides an exact solution of the pairing Hamiltonian. This Hamiltonian is characterized by the electron-hole pairing symmetry, which is however hidden in Richardson equations. By analyzing this symmetry and using an additional conjecture, fulfilled in solvable limits, we suggest a simple expression of the ground state energy for an equally-spaced energy-level model, which is applicable along the whole crossover from the superconducting state to the pairing fluctuation regime. Solving Richardson equations numerically, we demonstrate a good accuracy of our expression.
Language
English
Source (journal)
European physical journal : B : condensed matter and complex systems. - Berlin
Publication
Berlin : 2013
ISSN
1434-6028
Volume/pages
86:5(2013), p. 1-6
Article Reference
235
ISI
000320286200044
Medium
E-only publicatie
Full text (Publisher's DOI)
Full text (publisher's version - intranet only)
UAntwerpen
Faculty/Department
Research group
Publication type
Subject
Affiliation
Publications with a UAntwerp address
External links
Web of Science
Record
Identification
Creation 04.09.2013
Last edited 20.06.2017
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