Disentangling the pair and quartet condensates

Abstract

We study the nontrivial interplay of the well known \emph{pairing} and the more complex \emph{quarteting} correlations in the particular case of $N>Z$ atomic nuclei. Within the new Analytical Disentangled Condensate model, by implementing the notion of \emph{fractional degeneracy} we obtain the clear physical picture of a rather weakly interacting mixture of quartet and neutron pair condensates which mainly feel each other's influence through Pauli blocking. The basic idea of our approach may be generalized in order to scrutinize the extent to which similar manifestations are present in various many-body systems.

5 pages, 2 figures

References in corpus (5)

• Alpha Cluster Formation and Decay in Quartetting Wave Function Approach
• Isovector proton-neutron pairing and Wigner energy in Hartree-Fock mean field calculations
• Quartetting in odd-odd self-conjugate nuclei
• Analytical approach for the Quartet Condensation Model
• Unified description of pairing and quarteting correlations within the particle-hole-boson approach

Cited by in corpus (4)

• A quartet BCS-like theory
• Bridging the quartet and pair pictures of isovector proton-neutron pairing
• Coexistence of quartets and pairs in even-even $N>Z$ nuclei
• Structure of the quartetting ground state of $N=Z$ nuclei