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An extension of RPA theory to strongly-interacting systems

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Proceeding from a least-action principle, a generalization of the random-phase approximation is developed which is suited to the description of elementary excitations in such strongly-interacting Fermi systems as nuclei, nuclear matter, neutron-star matter and liquid3He. The equations of the theory involve matrix elements of the Hamiltonian and identity operators in a nonorthogonal basis of states incorporating short-range correlations. Linear response of the dynamically correlated system to a weak external perturbation is investigated within the same framework.

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Authors and Affiliations

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

    J. M. C. Chen & J. W. Clark

  2. Department of Physics, University of Illinois, Urbana, Illinois, USA

    D. G. Sandler

Authors
  1. J. M. C. Chen
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  2. J. W. Clark
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  3. D. G. Sandler
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Additional information

On leave from Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA

We thank O. Bohigas, J. Martorell, S.E. Koonin and E. Krotscheck for helpful comments. This research was supported in part by the U.S. National Science Foundation under Grant Nos. DMR 80-08229 at Washington University, Grant Nos. DMR 78-21068 and PHY 78-26582 at the University of Illinois and Grant No. PHY 79-23638 at Caltech.

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Chen, J.M.C., Clark, J.W. & Sandler, D.G. An extension of RPA theory to strongly-interacting systems. Z Physik A 305, 223–229 (1982). https://doi.org/10.1007/BF01417438

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  • DOI: https://doi.org/10.1007/BF01417438

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