We examine two restructurings of the series relationship between the bare and renormalized coupling constant in dimensional regularization. In one of these restructurings, we are able to demonstrate via all-orders summation of leading and successive ǫ = 0 (dimensionality = 4) poles that the bare coupling vanishes in the dimension-4 limit. Electronic address: [email protected] Electronic address: dg...

J. F. Xu, G. X. Peng, F. Liu, D. F. Hou, L. W. Chen School of Physics, University of Chinese Academy of Sciences, 380 Huaibeizhen, Beijing 101408, China Theoretical Physics Center for Science Facilities, Institute of High Energy Physics, Beijing 100049, China Key Lab. of QLP, Institute of Particle Physics, Huazhong Normal University, Wuhan 430079, China Department of Physics and Astronomy, Shan...

Inflationary scenarios based on simple non-minimal coupling aφ2R and its generalizations are studied. First, generalizing the form of non-minimal coupling to K(φ)R with an arbitrary function K, we show that the flat potential still is obtainable when V (φ)/K2(φ) is asymptotically constant. Very interestingly, if the ratio of the dimensionless quartic coupling(λ) of the inflaton field and the no...

Using a Frenkel-exciton model, the degree of circular polarization of the luminescence (g(lum)) from one-dimensional, helical aggregates of chromophoric molecules is investigated theoretically. The coupling between the electronic excitation and a local, intramolecular vibrational mode is taken into account. Analytical expressions for the fluorescence band shape and g(lum) are presented for the ...

I review some aspects of supersymmetric grand unification and emphasize a recent development in the area of gauge coupling unification.

Experimental observations on the effect of coupling on synchronization of two mutually coupled nonidentical Chua’s oscillators are presented. We observe that as the coupling strength is gradually increased from the very weak coupling, the oscillators move from nonsynchrony to out-ofphase and then to antiphase synchronization. With further increase of the coupling strength, coexisting antiphase ...

We construct a class of scalar field models coupled to matter that lead to the dependence of masses and coupling constants on the ambient matter density. Such models predict a deviation of couplings measured on the Earth from values determined in low-density astrophysical environments, but do not necessarily require the evolution of coupling constants with the redshift in the recent cosmologica...

We present results for QCD with 2 degenerate flavours of quark using a non-perturbatively improved action on a lattice volume of 16 × 32 where the bare gauge coupling and bare dynamical quark mass have been chosen to maintain a fixed physical lattice spacing and volume (1.71 fm). By comparing measurements from these matched ensembles, including quenched ones, we find evidence of dynamical quark...

Assuming the equivalence of FRW-cosmological models and their Newtonian counterparts, we propose using the Gauss law in arbitrary dimension a general relation between the Newtonian gravitational constant G and the gravitational coupling constant κ.