Neutrino emissivity under neutral kaon condensation

Abstract

Neutrino emissivity from neutron star matter with neutral kaon condensate is considered. It is shown that a new cooling channel is opened, and what is more, all previously known channels acquire the greater emissivity reaching the level of the direct URCA cycle in normal matter.

7 pages, 1 figure, to be published in Phys.Rev.C, revised version: the sectioning changed and more discussion added