Superfluidity of Λ-,Σ-, -Hyperons in Neutron Star Cores

  • T. Takatsuka
  • S. Nishizaki
  • Y. Yamamoto
  • R. Tamagaki
Part of the Few-Body Systems book series (FEWBODY, volume 12)


Superfluidity of Λ-hyperons admixed in neutron star cores is discussed on the basis of a realistic approach to use the ΛΛ 1 S 0-pairing interaction tested by the data of double Λ hypernuclei and to take account of the density-dependence of Λ effective-mass. It is found that Λ-superfluid can be realized, though in a restricted density region. Also the study extended to Σ and hyperons strongly shows the possibility of their superfluidities. These results suggest that the so-called ”hyperon cooling scenario” would be one of the candidates for a rapid cooling of neutron stars compatible with observations.


Neutron Star NucL Phys Repulsive Core Neutron Star Matter Neutron Star Model 


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Copyright information

© Springer-Verlag Wien 2000

Authors and Affiliations

  • T. Takatsuka
    • 1
  • S. Nishizaki
    • 1
  • Y. Yamamoto
    • 2
  • R. Tamagaki
    • 3
  1. 1.Faculty of Humanities and Social SciencesIwate UniversityMoriokaJapan
  2. 2.Physics SectionTsuru UniversityTsuruJapan
  3. 3.Kamitakano Maeda-Cho 26-5Sakyo-ku, KyotoJapan

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