Results 61 to 70 of about 5,079,022 (381)

Superfluid-insulator transition of the Josephson junction array model with commensurate frustration

, 2002
We have studied the rationally frustrated Josephson-junction array model in the square lattice through Monte Carlo simulations of $(2+1)$D XY-model. For frustration $f=1/4$, the model at zero temperature shows a continuous superfluid-insulator transition.
E. Granato, H. S. J. van der Zant, H. S. J. van der Zant, H. Safar, Hunpyo Lee, J. Lee, M. P. A. Fisher, M. Y. Choi, M.-C. Cha, M.-C. Cha, Min-Chul Cha, N. Marković, R. E. Hetzel, S. Doniach, S. L. Sondhi, Y.-H. Li   +15 more
core   +1 more source

Noether Symmetries and Critical Exponents [PDF]

Symmetry, Integrability and Geometry: Methods and Applications, 2005
We show that all Lie point symmetries of various classes of nonlinear differential equations involving critical nonlinearities are variational/divergence symmetries.
openaire   +4 more sources

Global Persistence Exponent for Critical Dynamics

, 1996
A `persistence exponent' $\theta$ is defined for nonequilibrium critical phenomena. It describes the probability, $p(t) \sim t^{-\theta}$, that the global order parameter has not changed sign in the time interval $t$ following a quench to the critical ...
A. J. Bray, A. J. Bray, A. J. Bray, A. J. Bray, B. Derrida, B. Derrida, B. Derrida, C. Sire, D. A. Huse, H. K. Janssen, J. G. Amar, K. G. Wilson, P. Grassberger, S. C. Chaturvedi, S. J. Cornell, S. N. Majumdar, S. N. Majumdar, S. N. Majumdar, S. N. Majumdar, T. Ohta, W. Feller   +20 more
core   +1 more source

Exponent-critical groups

Journal of Group Theory
Abstract We define and investigate the property of being “exponent-critical” for a finite group. A finite group is said to be exponent-critical if its exponent is not the least common multiple of the exponents of its proper non-abelian subgroups. We explore properties of exponent-critical groups and give a characterization of such groups.
Simon R. Blackburn, William Cocke, Andrew Misseldine, Geetha Venkataraman   +3 more
openaire   +2 more sources

On a singular nonlinear Neumann problem [PDF]

Opuscula Mathematica, 2014
We investigate the solvability of the Neumann problem involving two critical exponents: Sobolev and Hardy-Sobolev. We establish the existence of a solution in three cases: \(\text{(i)}\;\ 2\lt p+1\lt 2^*(s),\) \(\text{(ii)}\;\ p+1=2^*(s)\) and \(\text ...
Jan Chabrowski
doaj   +1 more source

Finite size effects on measures of critical exponents in d=3 O(N) models [PDF]

, 1996
We study the critical properties of three-dimensional O(N) models, for N=2,3,4. Parameterizing the leading corrections-to-scaling for the $\eta$ exponent, we obtain a reliable infinite volume extrapolation, incompatible with previous Monte Carlo values ...
A. Muñoz Sudupe, Azaria, Azaria, Baker, Baker, Ballesteros, Binder, Brown, Butera, Caracciolo, Cooper, Goldner, Gottlob, Gottlob, H.G. Ballesteros, Holm, Kanaya, L.A. Fernández, Lammert, Le Guillou, Le Guillou, Le Guillou, Manoussakis, Patrascioiu, Pisarski, Polyakov, Rajagopal, V. Martín-Mayor, Wegner, Wilczek, Wolff   +30 more
core   +3 more sources

Nonlinear response for external field and perturbation in the Vlasov system [PDF]

, 2014
A nonlinear response theory is provided by use of the transient linearization method in the spatially one-dimensional Vlasov systems. The theory inclusively gives responses to external fields and to perturbations for initial stationary states, and is ...
Ogawa, Shun, Yamaguchi, Yoshiyuki Y.
core   +2 more sources

The Critical Exponent of Nuclear Fragmentation

Acta Physica Hungarica A) Heavy Ion Physics, 2003
Nuclei colliding at energies in the MeV’s break into fragments in a process that resembles a liquid-to-gas phase transition of the excited nuclear matter. If this is the case, phase changes occurring near the critical point should yield a “droplet” mass distribution of the form ≈A −T, with T (a critical exponent universal to ...
Barrañón, A., Cardenas, Rodrigo, Dorso, Claudio Oscar, López, J.A.   +3 more
openaire   +3 more sources

Making tau amyloid models in vitro: a crucial and underestimated challenge

FEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Soliton solutions for a quasilinear Schrödinger equation with critical exponent

, 2016
This paper is concerned with the existence of soliton solutions for a quasilinear Schrodinger equation in $R^N$ with critical exponent, which appears from modelling the self-channeling of a high-power ultrashort laser in matter.
Wentao Huang, Jianlin Xiang
semanticscholar   +1 more source