scholarly journals Self-consistent mean-field approach to the statistical level density in spherical nuclei

2018 ◽  
Vol 97 (6) ◽  
Author(s):  
V. M. Kolomietz ◽  
A. I. Sanzhur ◽  
S. Shlomo
Keyword(s):  
Level Density ◽  
Mean Field ◽  
Field Approach ◽  
Self Consistent ◽  
Statistical Level ◽  
Spherical Nuclei

Self-consistent mean-field approach for the ideal anyon gas

1990 ◽  
Vol 42 (13) ◽  
pp. 7894-7897 ◽  
Author(s):  
Lizeng Zhang ◽  
Michael Ma ◽  
Fu Chun Zhang
Keyword(s):  
Mean Field ◽  
Field Approach ◽  
Self Consistent ◽  
The Ideal

AN ELLIPSOIDAL MOLECULES MODEL OF LIQUID CRYSTAL WITH QUADRUPOLAR INTERACTION: SELF-CONSISTENT FREE ENERGY

1990 ◽  
Vol 04 (09) ◽  
pp. 1589-1609
Author(s):  
M.G. RASETTI ◽  
M.L. RASTELLO
Keyword(s):  
Single Molecule ◽  
Short Range ◽  
Lattice Gas ◽  
Mean Field ◽  
Second Order ◽  
Classical Lattice ◽  
Field Approach ◽  
Self Consistent ◽  
Short Range Correlations ◽  
Second Order Phase Transition

We study the structure of the phase space for a system of N molecules of ellipsoidal symmetry, as a function of concentration and temperature. A classical lattice gas approximation is considered and a single molecule is described by a rigid ellipsoidal core with weak attractive tails along the long axis. The method adopted is a second-order mean-field approach – designed in such a way as to keep into account the fluctuations from equilibrium of the order parameters up to the fourth order – combined with a cumulant-cluster expansion, and improved by keeping track of the short-range correlations. Preliminary numerical calculations show the existence, in the case of zero attractive tail, of a second order phase transition.

ANYONIC SUPERCONDUCTIVITY WITH FERROMAGNETIC GROUND STATE

1992 ◽  
Vol 06 (22) ◽  
pp. 3513-3527 ◽  
Author(s):  
B. CHAKRABORTY ◽  
S. RAMASWAMY ◽  
V. RAVISHANKAR
Keyword(s):  
Ground State ◽  
Mean Field ◽  
Meissner Effect ◽  
Gauge Fields ◽  
Zero Temperature ◽  
Field Approach ◽  
Current Correlation ◽  
Self Consistent ◽  
Ferromagnetic Ground State ◽  
Chern Simons

We study a system of non-relativistic two-dimensional spin-1/2 fermions minimally coupled to Chern-Simons and Maxwell gauge fields, at zero temperature. A self-consistent mean field approach leads to a ferromagnetic ground state which nevertheless is also superconducting. We calculate the spin and current correlation functions and show that there is a Meissner effect for weak external magnetic fields, characterised by two penetration lengths. The dispersion relations for the two longitudinal excitations are given. Further, the system supports spin waves which are massless in the absence of electromagnetic fields.

Sign in / Sign up

Export Citation Format

Share Document