A consistent approximation scheme beyond RPA for bosons

Details A consistent approximation scheme beyond RPA for bosons A consistent approximation scheme beyond RPA for bosons

2002-06-14

arxiv.org/abs/nucl-th/0206031v2

Eur.Phys.J. A16 (2003) 35-42

Physics

Nuclear Physics

Nuclear Theory

19 pages, Latex, 1 figure, accepted version in EPJA

Scientific paper

10.1140/epja/i2002-10075-y

In this paper, we develop a consistent extension of RPA for bosonic systems.
In order to illustrate the method, we consider the case of the anharmonic
oscillator. We compare our results with those obtained in mean-field and
standard RPA approaches, with the exact ones and show that they are very close
to the exact ones.

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