Search Results - subject:"Order parameter"

A velocity-adaptive Couzin model and its performance

Dong, Hairong; Zhao, Yan; Wu, Jiajing; Gao, Shigen - In: Physica A: Statistical Mechanics and its Applications 391 (2012) 5, pp. 2145-2153

Typical collective behaviors in the Couzin model are exhibited by simulation, and some performances of the system such as convergence probability and relative size are analyzed. To provide an alternative to the constant-speed setting of the Couzin model, a velocity-adaptive strategy is...

Persistent link: https://www.econbiz.de/10010591274

Asymptotically unbiased estimation of the second order tail parameter

de Wet, Tertius; Goegebeur, Yuri; Munch, Maria Reimert - In: Statistics & Probability Letters 82 (2012) 3, pp. 565-573

We introduce a class of asymptotically unbiased estimators for the second order parameter in extreme value statistics … estimators for the second order parameter. Asymptotic normality is proven under a third order condition on the tail behavior …

Persistent link: https://www.econbiz.de/10010571758

Micellar shape anisotropy on lyotropic nematic phases

Simões, M.; Pazetti, M.; Kimura, N.M.; Palangana, A.J. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 19, pp. 4000-4008

In this work we show, that with the introduction of the micellar shape anisotropy in the order parameter of a lyotropic …. Using the de Gennes connection between microscopic and macroscopic order parameters, such an extended order parameter is …

Persistent link: https://www.econbiz.de/10011058792

Monte Carlo simulation of a confined hard ellipse fluid

Moradi, M.; Hashemi, S.; Taghizadeh, F. - In: Physica A: Statistical Mechanics and its Applications 389 (2010) 21, pp. 4510-4519

The structural and thermodynamic properties of a confined hard ellipse fluid are studied using Monte Carlo simulation. The angular, average number densities and order parameters of hard ellipses confined between hard parallel walls are obtained for various bulk densities, aspect ratios and wall...

Persistent link: https://www.econbiz.de/10011060940

The critical ensemble: An efficient simulation of a macroscopic system at the critical point

Antoniou, N.G.; Diakonos, F.K.; Saridakis, E.N.; … - In: Physica A: Statistical Mechanics and its Applications 376 (2007) C, pp. 308-318

the other hand the dynamics in the order parameter space is simplified significantly in this case due to the onset of self … configurations resembling the characteristic fractal geometry of the critical system related to the self-similar order parameter …

Persistent link: https://www.econbiz.de/10010589799

Finite-size scaling of the three-dimensional conserved-order-parameter Ising model via Wang–Landau algorithm

Hadjiagapiou, I.A.; Malakis, A.; Martinos, S.S. - In: Physica A: Statistical Mechanics and its Applications 373 (2007) C, pp. 376-386

The critical properties of the conserved-order-parameter (COP) version of the three-dimensional Ising model with zero …

Persistent link: https://www.econbiz.de/10010591772

The impact of renormalization group theory on magnetism

Köbler, U.; Hoser, A. - In: The European Physical Journal B - Condensed Matter and … 60 (2007) 2, pp. 151-159

magnetic order parameter for T ↦ 0. Universal means that the deviations with respect to saturation at T=0 can perfectly be …

Persistent link: https://www.econbiz.de/10009282133

Critical behaviour of a three-dimensional one-component magnet in strong and weak external fields at T>Tc

Kozlovskii, M.P.; Pylyuk, I.V.; Prytula, O.O. - In: Physica A: Statistical Mechanics and its Applications 369 (2006) 2, pp. 562-576

phenomenological assumptions and adjusting parameters. The field dependences of the order parameter are plotted for the field region … including the neighbourhood of the pseudocritical line. It is established that long-wave fluctuations of the order parameter are …

Persistent link: https://www.econbiz.de/10011060948

Self-consistent theory of the long-range order in solid solutions

Olemskoi, Alexander - In: Physica A: Statistical Mechanics and its Applications 346 (2005) 3, pp. 303-326

. The long-range order parameter is found for different chemical potentials of the components to obtain a scope of ordering … concentrations of impurities and defects. Temperature-compositional dependencies of the order parameter and the sublattice difference …

Persistent link: https://www.econbiz.de/10011059465

Computer simulation of a central pattern generator via Kuramoto model

Cruz, Frederico Alan O.; Cortez, Célia Martins - In: Physica A: Statistical Mechanics and its Applications 353 (2005) C, pp. 258-270

oscillators. We introduced a new method to estimate the equilibrium order parameter to characterize the degree of synchronization …

Persistent link: https://www.econbiz.de/10011063320