نتایج جستجو برای: finite size scaling

تعداد نتایج: 853200  

2001
J. Engels

We calculate numerically universal finite-size-scaling functions for the three-dimensional O(4) and O(2) models. The approach of these functions to the infinite-volume scaling functions is studied in detail on the critical and pseudocritical lines. For this purpose we determine the pseudocritical line in two different ways. We find that the asymptotic form of the finite-size-scaling functions i...

1999
Michael Krech

The influence of a thermodynamic constraint on the critical finite-size scaling behavior of three-dimensional Ising and XY models is analyzed by MonteCarlo simulations. Within the Ising universality class constraints lead to Fisher renormalized critical exponents, which modify the asymptotic form of the scaling arguments of the universal finite-size scaling functions. Within the XY universality...

Journal: :Computer Physics Communications 2005
Semra Gündüç Mehmet Dilaver Meral Aydin Yigit Gündüç

In this work we have studied the dynamic scaling behavior of two scaling functions and we have shown that scaling functions obey the dynamic finite size scaling rules. Dynamic finite size scaling of scaling functions opens possibilities for a wide range of applications. As an application we have calculated the dynamic critical exponent (z) of Wolff’s cluster algorithm for 2-, 3and 4-dimensional...

2008
P. Markoš

Numerical studies of the Anderson transition are based on finite-size scaling analysis of the smallest positive Lyapunov exponent. We prove numerically that the same scaling holds also for higher Lyapunov exponents. This scaling supports the hypothesis of the one-parameter scaling of the conductance distribution. From collected numerical data for quasi one dimensional systems up to system size ...

2008
Sergio Caracciolo

We compute the corrections to finite-size scaling for the N -vector model on the square lattice in the large-N limit. We find that corrections behave as logL/L2. For tree-level improved hamiltonians corrections behave as 1/L2. In general l-loop improvement is expected to reduce this behaviour to 1/(L2 log L). We show that the finite-size-scaling and the perturbative limit do not commute in the ...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2007
Hans-Karl Janssen Sven Lübeck Olaf Stenull

Recently, considerable progress has been made in understanding finite-size scaling in equilibrium systems. Here, we study finite-size scaling in nonequilibrium systems at the instance of directed percolation (DP), which has become the paradigm of nonequilibrium phase transitions into absorbing states, above, at, and below the upper critical dimension. We investigate the finite-size scaling beha...

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