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Título: | Structure of the number-projected BCS wave function |
Autor: | Dukelsky, Jorge CSIC ORCID; Pittel, S.; Esebbag, C. | Fecha de publicación: | 10-mar-2016 | Editor: | American Physical Society | Citación: | Physical Review C - Nuclear Physics 93: 034313 (2016) | Resumen: | We study the structure of the number-projected BCS (PBCS) wave function in the particle-hole basis, displaying its similarities with coupled clusters theory (CCT). The analysis of PBCS together with several modifications suggested by the CCT wave function is carried out for the exactly solvable Richardson model involving a pure pairing Hamiltonian acting in a space of equally spaced, doubly degenerate levels. We point out the limitations of PBCS to describe the nonsuperconducting regime and suggest possible avenues for improvement. ©2016 American Physical Society | Descripción: | 5 pags., 4 figs. | Versión del editor: | http://doi.org/10.1103/PhysRevC.93.034313 | URI: | http://hdl.handle.net/10261/152274 | DOI: | 10.1103/PhysRevC.93.034313 | Identificadores: | doi: 10.1103/PhysRevC.93.034313 issn: 1089-490X |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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Structure.pdf | 237,12 kB | Adobe PDF | Visualizar/Abrir |
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