Many-body methods for nuclear systems at subnuclear densities

Abstract

This article provides a concise review of selected topics in the many-body physics of low density nuclear systems. The discussion includes the condensation of alpha particles in supernova envelopes, formation of three-body bound states and the BEC-BCS crossover in dilute nuclear matter, and neutrino production in $S$-wave paired superfluid neutron matter.

Comments: 10 pages, 3 figures. Talk given by AS at "Recent Progress in Many-Body Theories 14", Barcelona, 2007. To be published by World Sci., eds. G.E. Astrakharchik, J. Boronat, and F. Mazzanti