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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  1. 1.
    V.R. Pandharipande: Nucl. Phys.A178, 123 (1971)ADSGoogle Scholar
  2. 2.
    N.K. Glendenning: Phys. Lett. B114, 392 (1982)ADSGoogle Scholar
  3. N.K. Glendenning: Nucl. Phys.A493, 521(1989)ADSGoogle Scholar
  4. 3.
    F. Weber and M.K. Weigel: Nucl. Phys.A505, 779 (1989)ADSGoogle Scholar
  5. 4.
    Y. Sugahara and H. Toki: Prog. Theor. Phys.92, 803 (1994)ADSCrossRefGoogle Scholar
  6. 5.
    F. Schaffner and I.N. Mishustin: Phys. Rev.C53, 1416 (1996)ADSGoogle Scholar
  7. 6.
    S. Balberg and A. Gal: Nucl. Phys.A265, 435 (1997)ADSGoogle Scholar
  8. 7.
    M. Baldo, G.F. Burgio, H.J. Schultz: Phys. Rev.C58, 3688 (1998)ADSGoogle Scholar
  9. T. Takatsuka and R. Tamagaki: Proc. Int.Sym. on Physics of Hadrons and Nuclei, Tokyo, Dec.14–17, 1998, ed. Y. Akaishi, O. Morimatsu and M. Oka (to appear in Nucl. Phys. A); Prog. Theor. Phys.102, No.5 (1999)Google Scholar
  10. 9.
    S. Tsuruta: Phys. Reports292, 1 (1998)ADSCrossRefGoogle Scholar
  11. 10.
    D. Page: Astrophys. J.428, 250 (1994)ADSCrossRefGoogle Scholar
  12. 11.
    Madappa Prakash, Manju Prakash, J.M. Lattimer, C.J. Pethick: Astrophys. J.390, L77 (1992)ADSCrossRefGoogle Scholar
  13. 12.
    T. Takatsuka and R. Tamagaki: Prog. Theor. Phys. Suppl.No.112, 27(1993)Google Scholar
  14. 13.
    S. Balberg and N. Barnea: Phys. Rev.C57, 409 (1998)ADSGoogle Scholar
  15. 14.
    M.M. Nagels, T.A. Rijken and J.J. de Swart: Phys. Rev.D15, 2547 (1977)ADSGoogle Scholar
  16. 15.
    T. Ueda, K. Tominaga, M. Yamaguchi, N. Kijima, D. Okamoto, K. Miyagawa,T. Yamada: Prog. Theor. Phys.99, 891 (1998)ADSCrossRefGoogle Scholar
  17. 16.
    R.C. Malone, M.B. Johnson, H.A. Bethe: Astrophys. J.199, 741 (1975)ADSCrossRefGoogle Scholar

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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