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Prog. Theor. Phys. Vol. 103 No. 5 (2000) pp. 981-1000

Single-Particle Potentials and Effective Masses of Hyperons in Hyperonic Nuclear Systems

Yasuo Yamamoto, Shigeru Nishizaki^* and Tatsuyuki Takatsuka^*

Physics Section, Tsuru University, Tsuru 402-8555, Japan
^*Faculty of Humanities and Social Sciences, Iwate University
Morioka 020-8550, Japan

(Received December 25, 1999)

Abstract:

Hyperon single-particle potentials and effective masses are explored using the nuclear matter G-matrix theory starting from the Nijmegen OBE models. Those of hyperons (Λ, Σ and Ξ) in symmetric matter and neutron matter are calculated to high densities. The results are discussed with regard to the YN interactions and also with regard to the experimental results in the case of Λ. Similar calculations are performed for hyperonic neutron matter, which is composed of neutrons and hyperons (Λ, Σ^- or Ξ^-). The roles of Yn and YY interactions are discussed.

URL : http://ptp.ipap.jp/link?PTP/103/981/
DOI : 10.1143/PTP.103.981

[ Full Text PDF : FREE ACCESS (265K) ] Citation: Plain Text BiBTeX EndNote(RIS) RSS

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Citing Article(s) :

1. Progress of Theoretical Physics Vol. 105 No. 1 (2001) pp. 179-184 :

   The Possibility of Hyperon Superfluids in Neutron Star Cores^*

   Tatsuyuki Takatsuka, Shigeru Nishizaki, YasuoYamamoto and Ryozo Tamagaki

2. Progress of Theoretical Physics Vol. 105 No. 4 (2001) pp. 607-626 :

   Effective YN and YY Interactions and Hyperon-Mixing in Neutron Star Matter

   Shigeru Nishizaki, Yasuo Yamamoto and Tatsuyuki Takatsuka

3. Progress of Theoretical Physics Vol. 106 No. 2 (2001) pp. 363-372 :

   Ξ^- Emission Probabilities at (K^-,K⁺) Reaction Points and the ΞN Interaction

   Yasuo Yamamoto, Toru Tamagawa, Tomokazu Fukuda and Toshio Motoba

4. Progress of Theoretical Physics Vol. 108 No. 4 (2002) pp. 703-718 :

   Hyperon-Mixed Neutron Star Matter and Neutron Stars^*

   Shigeru Nishizaki, Yasuo Yamamoto and Tatsuyuki Takatsuka

5. Progress of Theoretical Physics Vol. 112 No. 1 (2004) pp. 37-72 :

   Baryon Superfluidity and Neutrino Emissivity of Neutron Stars

   Tatsuyuki Takatsuka and Ryozo Tamagaki

6. Progress of Theoretical Physics Vol. 115 No. 2 (2006) pp. 355-379 :

   Occurrence of Hyperon Superfluidity in Neutron Star Cores

   Tatsuyuki Takatsuka, Shigeru Nishizaki, Yasuo Yamamoto and Ryozo Tamagaki

7. Progress of Theoretical Physics Supplement No.146 (2002) pp. 279-288 :

   Superfluidity of Hyperon-Mixed Neutron Stars

   Tatsuyuki Takatsuka, Shigeru Nishizaki, Yasuo Yamamoto and Ryozo Tamagaki

8. Progress of Theoretical Physics Supplement No.156 (2004) pp. 84-103 :

   Hyperon-Mixed Neutron Stars

   Tatsuyuki Takatsuka

9. Progress of Theoretical Physics Supplement No.156 (2004) pp. 156-159 :

   YN and YY Interactions and Hypernuclei

   Yasuo Yamamoto

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