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Breit-Wigner to Gaussian transition in strength functions

V. K. B. Kota·R. Sahu
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Abstract

Employing hamiltonians defined by two-body embedded Gaussian orthogonal ensemble of random matrices(EGOE(2)) plus a mean-field producing one-body part, strength functions (for states defined by the one-body part) are constructed for various values of the strength of the chaos generating two-body part. Numerical calculations for six and seven fermion systems clearly demonstrate Breit-Wigner to Gaussian transition, in the chaotic domain, in strength functions as found earlier in nuclear shell model and Lipkin-Meshkov-Glick model calculations.

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V. K. B. Kota, R. Sahu. 2000-06-30. Breit-Wigner to Gaussian transition in strength functions. https://arxiv.org/abs/nucl-th/0006079

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