Phases of asymmetric nuclear matter with broken space symmetries

Content Provider	Semantic Scholar
Author	Müther, Herbert Sedrakian, Armen
Copyright Year	2002
Abstract	Isoscalar Cooper pairing in isospin asymmetric nuclear matter occurs between states populating two distinct Fermi-surfaces, each for neutrons and protons. The transition from a BCS-like to the normal (unpaired) state, as the isospin asymmetry is increased, is intervened by superconducting phases which spontaneously break translational and rotational symmetries. One possibility is the formation of a condensate with a periodic crystalline-like structure where Cooper pairs carry net momentum (the nuclear LOFF-phase). Alternatively, perturbations of the Fermi-surfaces away from spherical symmetry allow for minima in the condensate free-energy which correspond to a states with quadrupole deformations of Fermi-surfaces and zero momentum of the Cooper pairs. In a combined treatment of these phases we show that, although the Cooper pairing with finite momentum might arise as a local minimum , the lowest energy state features deformed Fermi-surfaces and Cooper pairs with vanishing total momentum.
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://arxiv.org/pdf/nucl-th/0209061v1.pdf
Alternate Webpage(s)	http://arxiv.org/pdf/nucl-th/0209061v3.pdf
Alternate Webpage(s)	http://arxiv.org/pdf/nucl-th/0209061v2.pdf
Language	English
Access Restriction	Open
Subject Keyword	Arabic numeral 0 Energy level Ephrin Type-B Receptor 1, human Femtometer Finite Element Analysis Genetic Translation Process Maxima and minima Neutrons Population Protons Quadrupole
Content Type	Text
Resource Type	Article