Many Body Approach for Quartet Condensation in Strong Coupling

Details Many Body Approach for Quartet Condensation in Strong Coupling Many Body Approach for Quartet Condensation in Strong Coupling

2010-04-02

arxiv.org/abs/1004.0359v1

Phys.Rev.C81:064310,2010

Physics

Condensed Matter

Quantum Gases

Scientific paper

10.1103/PhysRevC.81.064310

The theory for condensation of higher fermionic clusters is developed. Fully selfconsistent nonlinear equations for the quartet order parameter in strongly coupled fermionic systems are established and solved. The breakdown of the quasiparticle picture is pointed out. Derivation of numerically tractable approximation is described. The momentum projected factorisation ansatz of Ref. \cite{slr09} for the order parameter is employed again. As a definite example the condensation of $\alpha$ particles in nuclear matter is worked out.

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