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Critical-point symmetries in Boson-Fermion systems: The case of shape transitions in odd nuclei in a multiorbit model

 

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Opened Access Critical-point symmetries in Boson-Fermion systems: The case of shape transitions in odd nuclei in a multiorbit model
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Author: Alonso Alonso, Clara Eugenia
Arias Carrasco, José Miguel
Vitturi, Andrea
Department: Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2007-02-05
Published in: Physical Review Letters, 98 (5), 052501-1-052501-4.
Document type: Article
Abstract: We investigate phase transitions in boson-fermion systems. We propose an analytically solvable model [E(5/12)] to describe odd nuclei at the critical point in the transition from the spherical to γ-unstable behavior. In the model, a boson core described within the Bohr Hamiltonian interacts with an unpaired particle assumed to be moving in the three single-particle orbitals j=1/2, 3/2, 5/2. Energy spectra and electromagnetic transitions at the critical point compare well with the results obtained within the interacting boson-fermion model, with a boson-fermion Hamiltonian that describes the same physical situation.
Cite: Alonso Alonso, C.E., Arias Carrasco, J.M. y Vitturi, A. (2007). Critical-point symmetries in Boson-Fermion systems: The case of shape transitions in odd nuclei in a multiorbit model. Physical Review Letters, 98 (5), 052501-1-052501-4.
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URI: http://hdl.handle.net/11441/62635

DOI: 10.1103/PhysRevLett.98.052501

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