Proximity to the Rho-Meson Condensation Threshold in Nuclei

Abstract

Critical conditions for instability in the isovector unnatural-parity channel in nuclei are investigated in terms of the random-phase approximation. The particle-hole residual interaction consists of the n and p (2ir) meson-exchange attractive components in addition to the short-range repulsive Landau term. It is found that the nonresonant part of the iterated two-pion exchange moves the characteristics of the nuclear phase transition closer to those for rho-meson condensation. This mode may dominate at high density.

Gluonic phase in neutral two-flavor dense QCD

“…Because A (+) 3 gluons are condensed in the gluonic phase, we conclude that in the dual gauge invariant description this corresponds to a condensation of exotic vector mesons. In this regard, it is appropriate to mention that some authors speculated about a possibility of a condensation of vector ρ mesons in dense baryon matter [10]. The dynamics in the gluonic phase yield a scenario even with a more unexpected condensation.…”