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Neutron matter with a model interaction

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Abstract

An infinite system of neutrons interacting by a model pair potential is considered. We investigate a case when this potential is sufficiently strong attractive, so that its scattering length a tends to infinity, a → −∞. It appeared, that if the structure of the potential is simple enough, including no finite parameters, reliable evidences can be presented that such a system is completely unstable at any finite density. The incompressibility as a function of the density is negative, reaching zero value when the density tends to zero. If the potential contains a sufficiently strong repulsive core then the system possesses an equilibrium density. The main features of a theory describing such systems are considered.

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Authors and Affiliations

  1. The Racah Institute of Physics, Hebrew University, Jerusalem, 91904, Israel

    M. Ya. Amusia

  2. A.F. Ioffe Physical-Technical Institute, 194021, St. Petersburg, Russia

    M. Ya. Amusia

  3. Petersburg Institute of Nuclear Physics, 188350, Gatchina, Russia

    V. R. Shaginyan

  4. Department of Physics, University of Washington, Seattle, WA, 98195, USA

    V. R. Shaginyan

Authors
  1. M. Ya. Amusia
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  2. V. R. Shaginyan
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Correspondence to V. R. Shaginyan.

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Communicated by V.V. Anisovich

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Amusia, M.Y., Shaginyan, V.R. Neutron matter with a model interaction. Eur. Phys. J. A 8, 77–80 (2000). https://doi.org/10.1007/s100500070120

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  • DOI: https://doi.org/10.1007/s100500070120

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