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Seniority in quantum many-body systems. I. Identical particles in a single shell
P. Van Isacker, S. Heinze
A discussion of the seniority quantum number in many-body systems is presented. The analysis is carried out for bosons and fermions simultaneously but is restricted to identical pa…
Correlating radii and electric monopole transitions of atomic nuclei
S. Zerguine, P. Van Isacker, A. Bouldjedri +1
A systematic analysis of the spherical-to-deformed shape phase transition in even-even rare-earth nuclei from Ce to W is carried out in the framework of the interacti…
Partial conservation of seniority and nuclear isomerism
P. Van Isacker, S. Heinze
We point out the possibility of the {\em partial} conservation of the seniority quantum number when most eigenstates are mixed in seniority but some remain pure. This situation occ…
Evolution of spectral properties along the O(6)-U(5) transition in the interacting boson model. II. Classical trajectories
Michal Macek, Pavel Cejnar, Jan Jolie +1
This article continues our previous study of level dynamics in the [O(6)-U(5)]O(5) transition of the interacting boson model [nucl-th/0504016] using the semiclassical theo…
Evolution of spectral properties along the O(6)-U(5) transition in the interacting boson model. I. Level dynamics
Stefan Heinze, Pavel Cejnar, Jan Jolie +1
We investigate the evolution of quantal spectra and the corresponding wave functions along the [O(6)-U(5)]O(5) transition of the interacting boson model. The model is inte…
Thermodynamic Analogy for Structural Phase Transitions
Pavel Cejnar, Stefan Heinze, Jan Dobes
We investigate the relationship between ground-state (zero-temperature) quantum phase transitions in systems with variable Hamiltonian parameters and classical (temperature-driven)…
Thermodynamic analogy for quantum phase transitions at zero temperature
Pavel Cejnar, Stefan Heinze, Jan Dobes
We propose a relationship between thermodynamic phase transitions and ground-state quantum phase transitions in systems with variable Hamiltonian parameters. It is based on a link…