New Mechanism for the Enhancement ofsdDominance in Interacting Boson Models

2001/02/15 by J. Dukelsky, S. Pittel, S. P̧ittel · 3 citations
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #nucl-th

paper · pdf · doi:10.1103/physrevlett.86.4791

published as Phys.Rev.Lett.86:4791-4794,2001 · 4 pages, 2 figures

arxiv created 2001/02/15 · openalex publication_date 2001/05/21 · arxiv updated 2011/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We introduce an exactly solvable model for interacting bosons that extend up to high spin and interact through a repulsive pairing force. The model exhibits a phase transition to a state with almost complete sd dominance. The repulsive pairing interaction that underlies the model has a natural microscopic origin in the Pauli exclusion principle between constituent nucleons. As such, repulsive pairing between bosons seems to provide a new mechanism for the enhancement of sd dominance, giving further support for the validity of the sd interacting boson model.

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• Scalar two-level boson model to study the interacting boson model phase diagram in the Casten triangle