Kaon Condensation and Lambda-Nucleon Loop in the Relativistic Mean-Field Approach

Journal Article · Thu Feb 24 04:00:00 EST 2005

OSTI ID:837133

Maruyama, Tomoyuki; Muto, Takumi; Tatsumi, Toshitaka; Tsushima, Kazuo; Thomas, Anthony W

The possibility of kaon condensation in high-density symmetric nuclear matter is investigated including both s- and p-wave kaon-baryon interactions within the relativistic mean-field (RMF) theory. Above a certain density, we have a collective K{sub s} state carrying the same quantum numbers as the antikaon. The appearance of the K{sub s} state is caused by the time component of the axial-vector interaction between kaons and baryons. It is shown that the system becomes unstable with respect to condensation of K-Kbar{sub s} pairs. We consider how the effective baryon masses affect the kaon self-energy coming from the time component of the axial-vector interaction. Also, the role of the spatial component of the axial-vector interaction on the possible existence of the collective kaonic states is discussed in connection with Lambda-mixing effects in the ground state of high-density matter. Implications of K-Kbar{sub s} condensation for high-energy heavy-ion collisions are briefly mentioned.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: US Department of Energy; USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 837133
• Report Number(s): JLAB-THY-05-295; DOE/ER/40150-3179
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
GROUND STATES
KAONS
NUCLEAR MATTER
QUANTUM NUMBERS
SELF-ENERGY