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arXiv · 2112.15393

Nuclear states projected from a pair condensate

Yi Lu·Yang Lei·Calvin W. Johnson·Jia Jie Shen
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Abstract

Atomic nuclei exhibit deformation, pairing correlations, and rotational symmetries. To meet these competing demands in a computationally tractable formalism, we revisit the use of general pair condensates with good particle number as a trial wave function for even-even nuclei. After minimizing the energy of the condensate, we project out states with good angular momentum with a fast projection technique, allowing for general triaxial deformations. To show applicability, we present example calculations from pair condensates in several model spaces, and compare against projected Hartree-Fock and full configuration-interaction shell model calculations. This approach successfully generates spherical, vibrational and rotational spectra, demonstrating potential for modeling medium- to heavy-mass nuclei.

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Yi Lu, Yang Lei, Calvin W. Johnson, Jia Jie Shen. 2022-01-16. Nuclear states projected from a pair condensate. https://doi.org/10.1103/physrevc.105.034317

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