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arXiv · 1108.5479

Symmetry restoration in Hartree-Fock-Bogoliubov based theories

G. F. Bertsch·L. M. Robledo
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Abstract

We present a pfaffian formula for projection and symmetry restoration for wave functions of the general Bogoliubov form, including quasiparticle excited states and linear combinations of them. This solves a long-standing problem in calculating states of good symmetry, arising from the sign ambiguity of the commonly used determinant formula. A simple example is given of projecting good particle number and angular momentum from a Bogoliubov wave function in the Fock space of a single j-shell.

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G. F. Bertsch, L. M. Robledo. 2011-12-22. Symmetry restoration in Hartree-Fock-Bogoliubov based theories. https://doi.org/10.1103/physrevlett.108.042505

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