Перегляд за автором "Berche, B."

Сортувати за: Порядок: Результатів:

  • A new critical exponent 'coppa' and its logarithmic counterpart 'hat coppa' 
    Kenna, R.; Berche, B. (Condensed Matter Physics, 2013)
    It is well known that standard hyperscaling breaks down above the upper critical dimension dc, where the critical exponents take on their Landau values. Here we show that this is because, in standard formulations in the ...
  • Correlations, connections, and physics in complex systems 
    Berche, B.; Folk, R.; Kenna, R.; Mryglod, O. (Condensed Matter Physics, 2017)
    It is with great pleasure that we present, in this issue, a series of papers dedicated to the 60th birthday of Professor Yurij Holovatch. The broad spectrum of topics treated by the contributions reflect Yurij’s comprehensive ...
  • Criticality of the random-site Ising model: Metropolis, Swendsen-Wang and Wolff Monte Carlo algorithms 
    Ivaneyko, D.; Ilnytskyi, J.; Berche, B.; Holovatch, Yu. (Condensed Matter Physics, 2005)
    We apply numerical simulations to study of the criticality of the 3D Ising model with random site quenched dilution. The emphasis is given to the issues not being discussed in detail before. In particular, we attempt a ...
  • Equilibrium currents in a Corbino graphene ring 
    López, A.; Bolívar, N.; Medina, E.; Berche, B. (Condensed Matter Physics, 2014)
    We address the description of a graphene Corbino disk in the context of a tight binding approach that includes both kinetic and Rashba spin-orbit coupling due to an external out-of-plane electric field. Persistent equilibrium ...
  • Finite size induced phenomena in 2D classical spin models 
    Kapikranian, O.; Berche, B.; Holovatch, Yu. (Вопросы атомной науки и техники, 2007)
    We make a short overview of the recent analytic and numerical studies of the classical two-dimensional XY and Heisenberg models at low temperatures. Special attention is being paid to an influence of finite system size L ...
  • From Brownian motion to power of fluctuations 
    Berche, B.; Holovko, M.; Trokhymchuk, A.; Vlachy, V. (Condensed Matter Physics, 2012)
  • Gauge field theory approach to spin transport in a 2D electron gas 
    Berche, B.; Bolìvar, N.; López, A.; Medina, E. (Condensed Matter Physics, 2009)
    We discuss the Pauli Hamiltonian including the spin-orbit interaction within an U(1) * SU(2) gauge theory interpretation, where the gauge symmetry appears to be broken. This interpretation offers new insight into the ...
  • Historical and interpretative aspects of quantum mechanics: a physicists’ naive approach 
    Berche, B.; Chatelain, C.; Dufour, C.; Gourieux, T.; Karevski, D. (Condensed Matter Physics, 2006)
    Many theoretical predictions derived from quantum mechanics have been confirmed experimentally for the last 80 years. However, interpretative aspects have long been subject to debate. Among them, the question of the ...
  • Impurity-impurity pair correlation function and paramagnetic-to-ferromagnetic transition in the random Ising model 
    Ivaneyko, D.; Berche, B.; Holovatch, Yu.; Ilnytskyi, Ja. (Вопросы атомной науки и техники, 2007)
    In this Monte Carlo study we concentrated on the influence of non-magnetic impurities arranged as the lines with random orientation on paramagnetic-to-ferromagnetic phase transition in the 3D Ising model. Special emphasize ...
  • Mochima theoretical physics spring school 
    Berche, B.; Donoso, A.; Paredes, R. (Condensed Matter Physics, 2006)
    The Mochima theoretical physics spring school on the Foundations of statistical and mesoscopic physics took place in Mochima, Edo. Sucre, Venezuela, between the 20th and 24th of June 2005. The Mochima biological station, ...
  • Nematic phase transitions in two-dimensional systems 
    Berche, B.; Paredes, R. (Condensed Matter Physics, 2005)
    Simulations of nematic-isotropic transition of liquid crystals in two dimensions are performed using an O(2) vector model characterized by non linear nearest neighbour spin interaction governed by the fourth Legendre polynomial ...
  • On the critical behaviour of two-dimensional liquid crystals 
    Fariñas-Sánchez, A.l.; Botet, R.; Berche, B.; Paredes, R. (Condensed Matter Physics, 2010)
    The Lebwohl-Lasher (LL) model is the traditional model used to describe the nematic-isotropic transition of real liquid crystals. In this paper, we develop a numerical study of the temperature behaviour and of finite-size ...
  • On the discontinuity of the specific heat of the Ising model on a scale-free network 
    Krasnytska, M.; Berche, B.; Holovatch, Yu.; Kenna, R. (Condensed Matter Physics, 2015)
    We consider the Ising model on an annealed scale-free network with node-degree distribution characterized by a power-law decay P(K)∼ K-λ. It is well established that the model is characterized by classical mean-field ...
  • Phase transitions in the Potts model on complex networks 
    Krasnytska, M.; Berche, B.; Holovatch, Yu. (Condensed Matter Physics, 2013)
    The Potts model is one of the most popular spin models of statistical physics. The prevailing majority of work done so far corresponds to the lattice version of the model. However, many natural or man-made systems are much ...
  • Random Ising model in three dimensions: theory, experiment and simulation – a difficult coexistence 
    Berche, B.; Berche, P.E.; Chatelain, C.; Janke, W. (Condensed Matter Physics, 2005)
    We discuss different approaches to the study of the effect of disorder in the three-dimensional Ising model. From the theoretical point of view, renormalization group calculations provide quite accurate results. ...
  • Rashba spin-orbit interaction enhanced by graphene in-plane deformations 
    Berche, B.; Mireles, F.; Medina, E. (Condensed Matter Physics, 2017)
    Graphene consists in a single-layer carbon crystal where 2pz electrons display a linear dispersion relation in the vicinity of the Fermi level, conveniently described by a massless Dirac equation in 2+1 spacetime. ...