Inhomogeneous condensates in dilute nuclear matter and BCS-BEC crossovers

Abstract

We report on recent progress in understanding pairing phenomena in low-density nuclear matter at small and moderate isospin asymmetry. A rich phase diagram has been found comprising various superfluid phases that include a homogeneous and phase-separated BEC phase of deuterons at low density and a homogeneous BCS phase, an inhomogeneous LOFF phase, and a phase-separated BCS phase at higher densities. The transition from the BEC phases to the BCS phases is characterized in terms of the evolution, from strong to weak coupling, of the condensate wavefunction and the second moment of its density distribution in $r$-space. We briefly discuss approaches to higher-order clustering in low-density nuclear matter.

8 pages, 3 figures, proceedings of the conference "The Modern Physics of Compact Stars and Relativistic Gravity", 18-21 September 2013 Yerevan, Armenia

References in corpus (8)

• Light nuclei quasiparticle energy shift in hot and dense nuclear matter
• Appearance of Light Clusters in Post-bounce Evolution of Core-Collapse Supernovae
• Statistical description of complex nuclear phases in supernovae and proto-neutron stars
• Cluster virial expansion for nuclear matter within a quasiparticle statistical approach
• Light nuclei in supernova envelopes: a quasiparticle gas model
• Phase diagram of dilute nuclear matter: Unconventional pairing and the BCS-BEC crossover
• BCS-BEC Crossover and Thermodynamics in Asymmetric Nuclear Matter with Pairings in Isospin I=0 and I=1 Channels
• Angle-dependent Gap state in Asymmetric Nuclear Matter

Cited by in corpus (7)

• Superfluidity in nuclear systems and neutron stars
• BCS-BEC crossovers and unconventional phases in dilute nuclear matter
• Cooling compact stars and phase transitions in dense QCD
• Composition of nuclear matter with light clusters and Bose-Einstein condensation of $\alpha$ particles
• Conventional and Unconventional Pairing and Condensates in Dilute Nuclear Matter
• Toward electrodynamics of unconventional phases of dilute nuclear matter
• Nuclear systems under extreme conditions: isospin asymmetry and strong B-fields