Results 31 to 40 of about 28,838 (310)

Noether Symmetries and Critical Exponents [PDF]

open access: yesSymmetry, 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

Universality of miscible–immiscible phase separation dynamics in two-component Bose–Einstein condensates

open access: yesNew Journal of Physics, 2019
We investigate the non-equilibrium dynamics across the miscible–immiscible phase separation in a binary mixture of Bose–Einstein condensates. The excitation spectra reveal that the Landau critical velocity vanishes at the critical point, where the ...
Xunda Jiang   +3 more
doaj   +1 more source

On the Aizenman exponent in critical percolation [PDF]

open access: yesJournal of Experimental and Theoretical Physics Letters, 2002
5 pages, 4 figures, 4 ...
Lev N. Shchur, Timofey Rostunov
openaire   +4 more sources

On a singular nonlinear Neumann problem [PDF]

open access: yesOpuscula 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

Exponent-critical groups

open access: yesJournal 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   +3 more
openaire   +2 more sources

The Critical Exponent of Nuclear Fragmentation

open access: yesActa 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.   +3 more
openaire   +3 more sources

Hypergeometric continuation of divergent perturbation series: I. Critical exponents of the Bose–Hubbard model

open access: yesNew Journal of Physics, 2017
We study the connection between the exponent of the order parameter of the Mott insulator-to-superfluid transition occurring in the two-dimensional Bose–Hubbard model, and the divergence exponents of its one- and two-particle correlation functions.
Sören Sanders, Martin Holthaus
doaj   +1 more source

Field-induced tricritical phenomenon and magnetic structures in magnetic Weyl semimetal candidate NdAlGe

open access: yesNew Journal of Physics, 2022
Non-centrosymmetric NdAlGe is considered to be a candidate for magnetic Weyl semimetal in which the Weyl nodes can be moved by magnetization. Clarification of the magnetic structures and couplings in this system is thus crucial to understand its magnetic
Jun Zhao   +13 more
doaj   +1 more source

On balanced sequences and their critical exponent

open access: yesTheoretical Computer Science, 2023
We study aperiodic balanced sequences over finite alphabets. A sequence vv of this type is fully characterised by a Sturmian sequence u and two constant gap sequences y and y'. We show that the language of v is eventually dendric and we focus on return words to its factors. We develop a method for computing the critical exponent and asymptotic critical
Francesco Dolce   +2 more
openaire   +2 more sources

The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada

open access: yesPopulation Ecology, EarlyView.
We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley   +1 more source

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