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To what extent does the self-consistent mean-field exist?

Lu Guo·Fumihiko Sakata·En-Guang Zhao·J. A. Maruhn
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Abstract

A non-convergent difficulty near level-repulsive region is discussed within the self-consistent mean-field theory. It is shown by numerical and analytic studies that the mean-field is not realized in the many-fermion system when quantum fluctuations coming from two-body residual interaction and quadrupole deformation are larger than an energy difference between two avoided crossing orbits. An analytic condition indicating a limitation of the mean-field concept is derived for the first time.

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Lu Guo, Fumihiko Sakata, En-Guang Zhao, J. A. Maruhn. 2007-01-31. To what extent does the self-consistent mean-field exist?. https://doi.org/10.1142/s0218301306004739

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