Condensation of incommensurate solid 4

Abstract

It is pointed out that simulation computation of energy performed so far cannot be used to decide if the ground state of solid 4 He has the number of lattice sites equal to the number of atoms (commensurate state) or if it is different (incommensurate state). The best variational wave function, a shadow wave function, gives an incommensurate state but the… (More)

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