Symmetry restoration in hartree-fock-bogoliubov based theories
Entity
UAM. Departamento de Física TeóricaPublisher
American Physical SocietyDate
2012-01-26Citation
10.1103/PhysRevLett.108.042505
Physical Review Letters 108.4 (2012): 042505
ISSN
0031-9007 (print); 1079-7114 (online)DOI
10.1103/PhysRevLett.108.042505Funded by
This work was supported in part by the U.S. Department of Energy under Grant No. DE-FG02- 00ER41132, and by the National Science Foundation under Grant No. PHY-0835543. The work of L. M. R. was supported by MICINN (Spain) under Grants No. FPA2009-08958, and No. FIS2009-07277, as well as by Consolider-Ingenio 2010 Programs CPAN Grant No. CSD2007-00042 and MULTIDARK Grant No. CSD2009-00064Project
Gobierno de España. FPA2009-08958; Gobierno de España. FIS2009-07277; Gobierno de España. CSD2007-00042; Gobierno de España. CSD2009-00064Editor's Version
http://dx.doi.org/10.1103/PhysRevLett.108.042505Subjects
Bogoliubov; Fock spaces; Linear combinations; Particle numbers; Pfaffian; Quasi particles; FísicaRights
© 2012 American Physical SocietyAbstract
We present a Pfaffian formula for projection and symmetry restoration for wave functions of the general Bogoliubov form, including quasiparticle excited states and linear combinations of them. This solves a long-standing problem in calculating states of good symmetry, arising from the sign ambiguity of the commonly used determinant formula. A simple example is given of projecting a good particle number and angular momentum from a Bogoliubov wave function in the Fock space of a single j-shell
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Google Scholar:Bertsch, G. F.
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Robledo Martín, Luis Miguel
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