On the width of the critical region in dilute magnets with long range percolation |
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| Authors: | Amnon Aharony D Stauffer |
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| Institution: | (1) Department of Physics and Astronomy, Tel Aviv University, Ramat Aviv, 69978 Tel Aviv, Israel;(2) Present address: Institut für Theoretische Physik, Universität zu Köln, D-5000 Köln 41, Federal Republic of Germany |
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| Abstract: | The Ginzburg criterion is used to estimate the width of the critical region for a dilute magnet with a large range of interactionsR. This width decreases asR
–2d/(4–d) at high temperature and asR
–2d/(6–d) at very low temperatures, i.e. in the percolation limit. The crossover between the two regimes is discussed. |
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