 98469 Angelescu N., Verbeure A., Zagrebnov V.A.
 Quantum nVector Anharmonic Crystal I: 1/nExpansion
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Jun 23, 98

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Abstract. We consider the finitevolume quantum $n$vector anharmonic crystal in the
large $n$ limit and compute corrections to the corresponding HartreeFock
system. In
particular we prove the complete $1/n$asymptotic series of the free energy,
the Gibbs canonical state, and the distributions of the displacement and
squared displacement fluctuation operators.
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