An intrinsic-state formalism for the Interacting Boson-Fermion Model with configuration mixing

2025/07/08 by Maya-Barbecho, E., García-Ramos, J. E. · 1 citation
#FOS: Physical sciences #Nuclear Experiment (nucl-ex) #Nuclear Theory (nucl-th)

paper · doi:10.48550/arxiv.2507.05650

Abstract

In this letter, we present the intrinsic state formalism of the Interacting Boson-Fermion Model incorporating both 0p-0h and 2p-2h (regular and intruder) configurations. The framework allows to deal with the unpaired fermion in either a single-j or multi-j orbital and is applicable to both axial and triaxial nuclear shapes. The formalism is applied to a schematic transitional region where regular and intruder configurations coexist and cross. We show that the boson-fermion part of the Hamiltonian can either enhance or suppress the emergence of a type II Quantum Phase Transition.

Citations

• Geometry of Configuration Mixing in Bose-Fermi Systems
• Competing shape evolution, crossing configurations and single particle levels in nuclei
• Nuclear shell model and interacting bosons

Cited by

• Quantum and classical analyses of intertwined phase transitions in odd-mass Nb isotopes

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