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Condensate Fraction in Neutron Matter
Luca Salasnich
We study the Bose-Einstein condensation of fermionic pairs in the uniform neutron matter by using the concept of the off-diagonal long-range order of the two-body density matrix of…
Anomalous Spectral Statistics of the Asymmetric Rotor Model
V. R. Manfredi, L. Salasnich
We investigate the spectral statistics of the asymmetric rotor model (triaxial rigid rotator). The asymmetric top is classically integrable and, according to the Berry-Tabor theory…
Mean--Field and Nonlinear Dynamics in Many--Body Quantum Systems
V. R. Manfredi, L. Salasnich
In this paper we discuss in detail the nonlinear equations of the mean--field approximation and their connection to the exact many--body Schrödinger equation. Then we analyze the m…
Large Shell Model Calculations for Calcium Isotopes: Spectral Statistics and Chaos
V. R. Manfredi, J. M. G. Gomez, L. Salasnich
We perform large shell model calculations for Calcium isotopes in the full fp shell by using the realistic Kuo-Brown interaction. The Calcium isotopes are especially interesting be…
Quantum Signature of the Chaos-Order Transition in a Homogeneous SU(2) Yang-Mills-Higgs System
Luca Salasnich
We analyze a spatially homogeneous SU(2) Yang-Mills-Higgs system both in classical and quantum mechanics. By using the Toda criterion of the Gaussian curvature we find a classical…
Quantum Transition from Order to Chaos in the Nuclear Shell Model
Luca Salasnich
We discuss the role of quantum chaos in atomic nuclei. After reviewing the basic assumptions of the nuclear shell model, we analyze the spectral statistics of the energy levels obt…