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Beyond mean field study states: Analysis within the Lipkin model

par Severyukhin, Alexei ;Bender, Michaël ;Heenen, Paul-Henri
Référence Physical Review C (Nuclear Physics)
Publication Publié, 2006

Article révisé par les pairs

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Résumé :

We compare the generator coordinate method (GCM) and the random-phase approximation (RPA) in the framework of the exactly solvable Lipkin-Meshkov-Glick model. We show that the discretized GCM works quite well and permits to obtain results close to the exact results with a small number of discretization points. © 2006 The American Physical Society.