154 citations · 926 across the 32 of their papers we have counts for
8 papers · 1 filter
On the ground--state energy of finite Fermi systems
Jérôme Roccia, Patricio Leboeuf
We study the ground--state shell correction energy of a fermionic gas in a mean--field approximation. Considering the particular case of 3D harmonic trapping potentials, we show th…
Level density of a Fermi gas: average growth and fluctuations
Patricio Leboeuf, Jérôme Roccia
We compute the level density of a two--component Fermi gas as a function of the number of particles, angular momentum and excitation energy. The result includes smooth low--energy…
Correlations in Nuclear Masses
H. Olofsson, S. Aberg, O. Bohigas +1
It was recently suggested that the error with respect to experimental data in nuclear mass calculations is due to the presence of chaotic motion. The theory was tested by analyzing…
Level density of a Fermion gas: average growth, fluctuations, universality
Patricio Leboeuf
It has been shown by H. Bethe more than 70 years ago that the number of excited states of a Fermi gas grows, at high excitation energies , like the exponential of the square roo…
Fluctuations in the level density of a Fermi gas
P. Leboeuf, A. G. Monastra, A. Relano
We present a theory that accurately describes the counting of excited states of a noninteracting fermionic gas. At high excitation energies the results reproduce Bethe's theory. At…
Regularity and chaos in the nuclear masses
P. Leboeuf
Shell effects in atomic nuclei are a quantum mechanical manifestation of the single--particle motion of the nucleons. They are directly related to the structure and fluctuations of…
Quantum thermodynamic fluctuations of a chaotic Fermi-gas model
P. Leboeuf, A. G. Monastra
We investigate the thermodynamics of a Fermi gas whose single-particle energy levels are given by the complex zeros of the Riemann zeta function. This is a model for a gas, and in…
Nuclear masses: evidence of order-chaos coexistence
O. Bohigas, P. Leboeuf
Shell corrections are important in the determination of nuclear ground-state masses and shapes. Although general arguments favor a regular single-particle dynamics, symmetry-breaki…