学術雑誌論文 Typicality and statewise entropy for classical field systems

Yoshida, Kyo

110 ( 6 )  , p.60001 , 2015-06 , European Physical Society , IOP Publishing
ISSN:0295-5075
NII書誌ID(NCID):AA12194839
内容記述
We consider a classical field system with discretized spatial coordinates and a quadratic Hamiltonian. Typicality for the system is shown in the sense that, for functions of state which satisfy certain conditions including the invariance under the spatial translations of the state, the values of the functions at almost all individual states in a microcanonical ensemble are almost equal to their microcanonical ensemble averages. A statewise entropy for the system is constructed in such a way that it satisfies the above conditions and its microcanonical average coincides with the entropy in standard formalism of statistical mechanics.
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