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Critical-point finite-size scaling in the microcanonical ensemble | | A.D. Bruce
; N.B. Wilding
; | | Date: |
2 Aug 1999 | | Subject: | Statistical Mechanics | cond-mat.stat-mech | | Abstract: | We develop a scaling theory for the finite-size critical behavior of the microcanonical entropy (density of states) of a system with a critically-divergent heat capacity. The link between the microcanonical entropy and the canonical energy distribution is exploited to establish the former, and corroborate its predicted scaling form, in the case of the 3d Ising universality class. We show that the scaling behavior emerges clearly when one accounts for the effects of the negative background constant contribution to the canonical critical specific heat. We show that this same constant plays a significant role in determining the observed differences between the canonical and microcanonical specific heats of systems of finite size, in the critical region. | | Source: | arXiv, cond-mat/9908025 | | Services: | Forum | Review | PDF | Favorites | |
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