Results 31 to 40 of about 294,004 (295)

Critical exponents without β-function [PDF]

open access: yesPhysics Letters B, 1999
We point out that the recently developed strong-coupling theory enables us to calculate the three main critical exponents nu, eta, omega, from the knowledge of only the two renormalization constants Z_phi of wave function and Z_m of mass. The renormalization constant of the coupling strength is superfluous, and with it also the beta-function, the ...
openaire   +3 more sources

Inhomogeneous Neumann problem with critical Sobolev exponent

open access: yesAdvances in Nonlinear Analysis, 2012
We investigate the solvability of the inhomogeneous Neumann problem involving the critical Sobolev exponent. In particular, we discuss the impact of the shape of the graph of the coefficient of the critical exponent on the existence of a solution.
Chabrowski Jan
doaj   +1 more source

Critical exponents for diluted resistor networks [PDF]

open access: yesPhysical Review E, 1999
An approach by Stephen is used to investigate the critical properties of randomly diluted resistor networks near the percolation threshold by means of renormalized field theory. We reformulate an existing field theory by Harris and Lubensky. By a decomposition of the principal Feynman diagrams we obtain a type of diagrams which again can be interpreted
Stenull, O., Janssen, H. K., Oerding, K.
openaire   +3 more sources

Critical growth elliptic problems involving Hardy-Littlewood-Sobolev critical exponent in non-contractible domains

open access: yesAdvances in Nonlinear Analysis, 2019
The paper is concerned with the existence and multiplicity of positive solutions of the nonhomogeneous Choquard equation over an annular type bounded domain.
Goel Divya, Sreenadh Konijeti
doaj   +1 more source

Target Localization with Unknown Transmit Power and Path-Loss Exponent Using a Kalman Filter in WSNs

open access: yesSensors, 2020
We present a novel hybrid localization algorithm for wireless sensor networks in the absence of knowledge regarding the transmit power and path-loss exponent.
SeYoung Kang, TaeHyun Kim, WonZoo Chung
doaj   +1 more source

Pseudo-holomorphic functions at the critical exponent [PDF]

open access: yes, 2015
We study Hardy classes on the disk associated to the equation $\bar\d w=\alpha\bar w$ for $\alpha\in L^r$ with $2\leq ...
Baratchart, Laurent   +2 more
core   +6 more sources

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

Critical exponent for the quantum spin Hall transition in Z_2 network model

open access: yes, 2011
We have estimated the critical exponent describing the divergence of the localization length at the metal-quantum spin Hall insulator transition. The critical exponent for the metal-ordinary insulator transition in quantum spin Hall systems is known to ...
Kobayashi, K., Ohtsuki, T., Slevin, K.
core   +1 more source

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   +3 more sources

Critical exponent for the Anderson transition in the three-dimensional orthogonal universality class

open access: yesNew Journal of Physics, 2014
We report a careful finite size scaling study of the metal–insulator transition in Anderson's model of localization. We focus on the estimation of the critical exponent ν that describes the divergence of the localization length.
Keith Slevin, Tomi Ohtsuki
doaj   +1 more source

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