Перегляд за автором "Kenna, R."

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  • 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 ...
  • A scientists' view of scientometrics: Not everything that counts can be counted 
    Kenna, R.; Mryglod, O.; Berche, B (Condensed Matter Physics, 2017)
    Like it or not, attempts to evaluate and monitor the quality of academic research have become increasingly prevalent worldwide. Performance reviews range from at the level of individuals, through research groups ...
  • 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 ...
  • Critical phenomena for systems under constraint 
    Izmailian, N.; Kenna, R. (Condensed Matter Physics, 2014)
    It is well known that the imposition of a constraint can transform the properties of critical systems. Early work on this phemomenon by Essam and Garelick, Fisher, and others, focused on the effects of constraints on the ...
  • Exact asymptotic expansion for the resistance between the center node and a node on the cobweb network boundary 
    Izmailian, N.; Kenna, R. (Condensed Matter Physics, 2014)
    We analyze the resistance between two nodes in a cobweb network of resistors. Based on an exact expression, we derive the asymptotic expansions for the resistance between the center node and a node on the boundary of the ...
  • Homotopy in statistical physics 
    Kenna, R. (Condensed Matter Physics, 2006)
    In condensed matter physics and related areas, topological defects play important roles in phase transitions and critical phenomena. Homotopy theory facilitates the classification of such topological defects. After ...
  • 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 ...