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- W2022363574 abstract "A detailed cluster analysis of the two-body density matrix n( r 1 , r 2 , r ′ 1 , r ′ 2 ) and the associated pairing matrix elements is performed for a strongly interacting system of bosons described by a Jastrow wave function. The study employs a multiplicative cluster procedure as suggested by Feenberg. It is demonstrated that the density matrix has a structure f(r)f(r′)n(r)n(r′) exp [−R( r 1 , r 2 , r ′ 1 , r ′ 2 )] where f ( r ) is the conventional Jastrow factor and n ( r ) the one-body density matrix corresponding to the Jastrow trial state (r | r 1 − r 2 |, r′ | r ′ 1 − r ′ 2 |) . The function R may be expressed by a series of irreducible cluster contributions which are given by a compact expressions in terms of spatial distribution functions. The density matrix exhibits off-diagonal long range order of the type n( r 1 , r 2 , r ′ 1 , r ′ 2 ) → f(r)n(r)f(r′)n(r′) as | r 1 − r ′ 1 | → ∞,r,r′ < ∞ . The associated pairing matrix elements and pairing energy of a Bose fluid are derived upon proper specialization of our results for the two-body density matrix." @default.
- W2022363574 created "2016-06-24" @default.
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- W2022363574 date "1979-04-01" @default.
- W2022363574 modified "2023-10-14" @default.
- W2022363574 title "Two-body density matrix of bose fluids" @default.
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- W2022363574 doi "https://doi.org/10.1016/0375-9474(79)90457-3" @default.
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