Restoration of broken symmetries in Self-Consistent RPA

Details Restoration of broken symmetries in Self-Consistent RPA Restoration of broken symmetries in Self-Consistent RPA

2001-06-28

arxiv.org/abs/nucl-th/0106064v1

Physics

Nuclear Physics

Nuclear Theory

6 pages, submitted to Phys. Rev. C

Scientific paper

It is shown that the Self-Consistent RPA (SCRPA) approach allows in a very natural way to restore symmetries, spontaneously broken on the mean field level. This is achieved via the introduction of a second Lagrange multiplier which constrains the variance of the symmetry operator to zero. This important feature of SCRPA, here pointed out for the first time, is illustrated employing a simplified model of the nuclear superfluidity.

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