Pairing correlations in finite systems: from the weak to the strong fluctuations regime |
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Authors: | M A?Fernández Email author" target="_blank">J L?EgidoEmail author |
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Institution: | (1) Departamento de Física Teórica C-XI, Universidad Autónoma de Madrid, 28049 Madrid, Spain |
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Abstract: | The Particle Number Projected Generator Coordinate Method is formulated
for the pairing Hamiltonian in a detailed way in the projection after variation
and the variation after projection methods.
The dependence of the wave functions on the generator coordinate is analyzed performing
numerical applications for the most relevant collective coordinates. The calculations reproduce
the exact solution in the weak, crossover and strong pairing regimes.
The physical insight of the ansatz and its numerical simplicity make this theory
an excellent tool to study pairing correlations in complex situations and/or involved
Hamiltonians. |
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Keywords: | |
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