Critical Casimir force in slab geometry with finite aspect ratio: analytic calculation above and below $T_c$
| Autor: | Dohm, Volker |
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| Rok vydání: | 2009 |
| Předmět: | |
| Zdroj: | EPL 86, 20001 (2009) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1209/0295-5075/86/20001 |
| Popis: | We present a field-theoretic study of the critical Casimir force of the Ising universality class in a $d$-dimensional ${L_\parallel^{d-1} \times L}$ slab geometry with a finite aspect ratio $\rho = L/L_\parallel$ above, at, and below $T_c$. The result of a perturbation approach at fixed dimension $d=3$ is presented that describes the dependence on the aspect ratio in the range $\rho \gtrsim 1/4$. Our analytic result for the Casimir force scaling function for $\rho = 1/4$ agrees well with recent Monte Carlo data for the three-dimensional Ising model in slab geometry with periodic boundary conditions above, at, and below $T_c$. Comment: 4 figures |
| Databáze: | arXiv |
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