Kaon Condensation in ``Nuclear Star" Matter

Abstract

The critical density for kaon condensation in ``nuclear star" matter is computed up to two-loop order {\it in medium} (corresponding to next-to-next-to-leading order in chiral perturbation theory in free space) with a heavy-baryon effective chiral Lagrangian whose parameters are determined from $KN$ scattering and kaonic atom data. To the order considered, the kaon self-energy has highly non-linear density dependence in dense matter. We find that the four-Fermi interaction terms in the chiral Lagrangian play an important role in triggering condensation, predicting for ``natural" values of the four-Fermi interactions a rather low critical density, ${\rho }_c<4{\rho }_0$.

12 pages and 2 figures(LaTeX), SNUTP-94-28. The fig. 3 is replaced, with some changes in the text but the conclusion is not affected by these changes

References in corpus (7)

• Renormalization Group Approach to Interacting Fermions
• From Kaon-Nuclear Interactions to Kaon Condensation
• Composition, Structure and Evolution of Neutron Stars with Kaon Condensates
• Kaon-Nucleon Scattering Amplitudes and Z${}^{\ast }$-Enhancements from Quark Born Diagrams
• Kaon-Nucleon Scattering from Chiral Lagrangians
• Effective Kaon Mass in Baryonic Matter and Kaon Condensation
• Hidden Local Symmetry at One Loop

Cited by in corpus (14)

• QCD Phenomenology based on a Chiral Effective Lagrangian
• Chiral perturbation theory
• Chiral Unitary approach to meson-meson and meson-baryon interactions and nuclear applications
• An Effective Chiral Lagrangian Approach to Kaon-Nuclear Interactions: Kaonic atom and kaon condensation
• Kaon Condensation in Dense Stellar Matter
• S-wave Meson-Nucleon Interactions and the Meson Mass in Nuclear Matter from Chiral Effective Lagrangians
• Properties of Hadrons in the Nuclear Medium
• Medium effects on the flow of strange particles in heavy ion collisions
• The Role of Lambda(1405) in Kaon-Proton Interactions
• Chiral Symmetry Restoration and the Georgi Vector Limit
• Chiral Perturbation Theory in a Nuclear Background
• Renormalization-Group Flow Analysis of Meson Condensations in Dense Matter
• Energy level displacement of excited np states of kaonic hydrogen
• On radiative np -> 1s + gamma transitions, induced by strong low-energy interactions,in kaonic atoms