Effective Critical Exponents of Ising Strips D*L with D<<L

Details Effective Critical Exponents of Ising Strips D*L with D<<L Effective Critical Exponents of Ising Strips D*L with D<<L

2003-06-13

arxiv.org/abs/cond-mat/0306360v1

Physics

Condensed Matter

Statistical Mechanics

6 pages, 7 figures

Scientific paper

Monte Carlo data simulating phase transitions in Ising strips $D\times L,$ ($D\llL) $ with periodic boundary conditions show that $T_{c}(D)=0$ for $D\leq D^{\ast}\simeq 6$ and $0D^{\ast}.$ Regular scaling of $ML^{\beta /\nu}$ vs $|T-T_{c}|L^{1/\nu}$ is obtained only for $% D>D^{\ast}$and the Monte Carlo effective susceptibility critical exponent $\gamma_{eff} (D)$ is shown to be well described by $\gamma (d)=\beta (d)[\delta (d)-1]$ with $% d_{eff}(D)$ given by $d_{eff}(D)\simeq 1.5+({1/200})(D-6)$ and $\beta (d)=(\frac{3d%}{16}-{1/4}),$ $\delta ^{-1}(d)=(\frac{2d}{15}-{1/5})$, which can be understood as valid with $d_{eff}(D)$.

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