Determination of multicritcal points for lattice-gas models by finite-size scaling of the susceptibility

1985 ◽  
Vol 32 (7) ◽  
pp. 4756-4759 ◽  
Author(s):  
Per Arne Rikvold
1992 ◽  
Vol 03 (02) ◽  
pp. 367-383 ◽  
Author(s):  
KWAN-TAI LEUNG

We report some selected recent developments in the finite-size scaling theory of critical phenomena occurring in systems with strong spatial anisotropies. Such systems are characterized by correlation lengths divergent with different exponents (ν⊥, ν||) along different directions. Attention is focused on the driven diffusive lattice gas that exhibits a second order nonequilibrium phase transition. We present in detail the phenomenology and its comparison with computer simulation. Novel features of finite-size effects in anisotropic nonequilibrium systems are emphasized.


2021 ◽  
Vol 81 (1) ◽  
Author(s):  
Alessandro Nada ◽  
Alberto Ramos

AbstractWe propose a new strategy for the determination of the step scaling function $$\sigma (u)$$ σ ( u ) in finite size scaling studies using the gradient flow. In this approach the determination of $$\sigma (u)$$ σ ( u ) is broken in two pieces: a change of the flow time at fixed physical size, and a change of the size of the system at fixed flow time. Using both perturbative arguments and a set of simulations in the pure gauge theory we show that this approach leads to a better control over the continuum extrapolations. Following this new proposal we determine the running coupling at high energies in the pure gauge theory and re-examine the determination of the $$\Lambda $$ Λ -parameter, with special care on the perturbative truncation uncertainties.


2004 ◽  
Vol 115 (1/2) ◽  
pp. 281-322 ◽  
Author(s):  
Sergio Caracciolo ◽  
Andrea Gambassi ◽  
Massimiliano Gubinelli ◽  
Andrea Pelissetto

1984 ◽  
Vol 29 (11) ◽  
pp. 6285-6294 ◽  
Author(s):  
P. A. Rikvold ◽  
K. Kaski ◽  
J. D. Gunton ◽  
M. C. Yalabik

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