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Impact of spin-isospin fluctuations on single-particle degrees of freedom in dense neutron matter

  • 90th Anniversary of A.B. Migdal's Birthday Nuclei
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Abstract

The Fermi surface of dense neutron matter may experience a rearrangement near the onset of pion condensation, due to a strong momentum dependence of the effective interaction by spin-isospin fluctuations. For example, a second (inner) Fermi surface may arise as high-momentum single-particle states are filled and low-momentum states are vacated. The influence of this phenomenon on the superfluid-transition temperature is investigated with the aid of a separation transformation of the BCS gap equation. Attention is also given to modifications of the specific-heat discontinuity at the transition temperature and the relation between the transition temperature and the zero-temperature energy gap.

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Authors and Affiliations

  1. McDonnell Center for the Space Sciences and Department of Physics, Washington University, St. Louis, USA

    J. W. Clark & V. A. Khodel

  2. Russian Research Centre Kurchatov Institute, pl. Kurchatova 1, Moscow, 123182, Russia

    V. A. Khodel & M. V. Zverev

Authors
  1. J. W. Clark
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  2. V. A. Khodel
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  3. M. V. Zverev
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Additional information

From Yadernaya Fizika, Vol. 64, No. 4, 2001, pp. 677–685.

Original English Text Copyright © 2001 by Clark, Khodel, Zverev.

This article was submitted by the authors in English.

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Clark, J.W., Khodel, V.A. & Zverev, M.V. Impact of spin-isospin fluctuations on single-particle degrees of freedom in dense neutron matter. Phys. Atom. Nuclei 64, 619–626 (2001). https://doi.org/10.1134/1.1368220

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  • DOI: https://doi.org/10.1134/1.1368220

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