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We estimate the Hausdorff dimension of certain Borel sets determined in dyadic expansion by products of r successive digits. 相似文献
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The applicability of the space–time formulation of the gluonic sector of QCD in terms of the Polyakov worldline path integral, via the use of the background field gauge fixing method, is extended to multi-gluon loop configurations. Relevant master formulas are derived for the computation of effective action terms. 相似文献
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We give a formula for the Hausdorff dimension of fractals which are the support of certain Riesz-product type measures. 相似文献
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A.I. Karanikas C.N. Ktorides 《The European Physical Journal C - Particles and Fields》2008,54(1):159-168
The validity of the Bianchi identity, which is intimately connected with the zig zag symmetry, is established, for piecewise
continuous contours, in the context of Polakov’s gauge field–string connection in the large ’t Hooft coupling limit, according
to which the chromoelectric ‘string’ propagates in five dimensions with its ends attached on a Wilson loop in four dimensions.
An explicit check in the wavy line approximation is presented. 相似文献
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We introduce a class of multiscale orthonormal matrices H(m) of order m×m, m = 2, 3,... . For m = 2 N, N = 1, 2,..., we get the well known Haar wavelet system. The term "multiscale" indicates that the construction of H(m) is
achieved in different scales by an iteration process, determined through the prime integer factorization of m and by repetitive
dilation and translation operations on matrices. The new Haar transforms allow us to detect the underlying ergodic structures
on a class of Cantor-type sets or languages. We give a sufficient condition on finite data of lengthm, or step functions determined
on the intervals [k/m, (k + 1)/m) , k = 0,...,m − 1 of [0, 1), to be written as a Riesz-type product in terms of the rows
of H(m). This allows us to approximate in the weak-* topology continuous measures by Riesz-type products. 相似文献
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Karanikas S Dzubiella J Moncho-Jordá A Louis AA 《The Journal of chemical physics》2008,128(20):204704
The effect of varying wall-particle and particle-particle interactions on the density profiles near a single wall and the solvation forces between two walls immersed in a fluid of particles is investigated by grand canonical Monte Carlo simulations. Attractive and repulsive particle-particle and particle-wall interactions are modeled by a versatile hard-core Yukawa form. These simulation results are compared to theoretical calculations using the hypernetted chain integral equation technique, as well as with fundamental measure density functional theory (DFT), where particle-particle interactions are either treated as a first order perturbation using the radial distribution function or else with a DFT based on the direct-correlation function. All three theoretical approaches reproduce the main trends fairly well, but exhibit inconsistent accuracy, particularly for attractive particle-particle interactions. We show that the wall-particle and particle-particle attractions can couple together to induce a nonlinear enhancement of the adsorption and a related "repulsion through attraction" effect for the effective wall-wall forces. We also investigate the phenomenon of bridging, where an attractive wall-particle interaction induces strongly attractive solvation forces. 相似文献