نتایج جستجو برای: phase transition

تعداد نتایج: 807364  

Journal: :Physical review letters 2002
G G Batrouni V Rousseau R T Scalettar M Rigol A Muramatsu P J H Denteneer M Troyer

In the absence of a confining potential, the boson-Hubbard model exhibits a superfluid to Mott insulator quantum phase transition at commensurate fillings and strong coupling. We use quantum Monte Carlo simulations to study the ground state of the one-dimensional bosonic Hubbard model in a trap. Some, but not all, aspects of the Mott insulating phase persist. Mott behavior occurs for a continuo...

Journal: :Physical review letters 2014
O L Acevedo L Quiroga F J Rodríguez N F Johnson

We reveal universal dynamical scaling behavior across adiabatic quantum phase transitions in networks ranging from traditional spatial systems (Ising model) to fully connected ones (Dicke and Lipkin-Meshkov-Glick models). Our findings, which lie beyond traditional critical exponent analysis and adiabatic perturbation approximations, are applicable even where excitations have not yet stabilized ...

Journal: :Physical review letters 1995
Harris Jungman

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2011
Silvio C Ferreira Ronan S Ferreira Romualdo Pastor-Satorras

We present an analysis of the quasistationary (QS) state of the contact process (CP) on annealed scale-free networks using a mapping of the CP dynamics in a one-step process and analyzing numerically and analytically the corresponding master equation. The relevant QS quantities determined via the master equation exhibit an excellent agreement with direct QS stochastic simulations of the CP. The...

2017
X. F. Miao L. Caron P. Roy N. H. Dung L. Zhang W. A. Kockelmann R. A. de Groot N. H. van Dijk E. Brück

Journal: :Physical review letters 2006
Alan T Dorsey Paul M Goldbart John Toner

Starting from the assumption that the normal solid to supersolid (NS-SS) phase transition is continuous, we develop a phenomenological Landau theory of the transition in which superfluidity is coupled to the elasticity of the crystalline lattice. We find that the elasticity does not affect the universal properties of the superfluid transition, so that in an unstressed crystal the well-known ano...

Journal: :Physical review. B, Condensed matter 1993
Kerler Weber

Journal: :Physical review letters 2004
Igor Volkov Jayanth R Banavar Amos Maritan

It is shown that an ecosystem in equilibrium is generally organized in a state which is poised in the vicinity of a novel phase transition.

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