We examine the energy dependence of single-meson photoproduction as it contributes to the Gerasimov-Drell-Hearn (GDH) sum rule. For photon energies above approximately 1 GeV, through the full resonance region, this contribution dominates the proton sum rule integral. Over the same energy region, our single-pion contribution to the neutron sum rule also qualitatively follows a recent set of GDH ...

We consider the problem of constructing a multicast tree that connects a group of source nodes to a group of sink nodes (receivers) and minimizes the maximum end-to-end delay between any pair of source/sink nodes. This is known as the minimum eccentricity multicast tree problem, and is directly related to the quality of service requirements of real multipoint applications. We deal directly with...

For a finite group G, let Z(G) be the centre of G. Then non-commuting graph on denoted by ΓG, has G\Z(G) as its vertex set with two distinct vertices vp and vq joined an edge whenever vpvq ≠ vqvp. The degree sum matrix is square whose (p,q)-th entry dvp + dvq p different from q, otherwise, it zero, where dvi vi. This study presents general formula for energy, EDS (ΓG), dihedral groups order 2n,...

This report is a review of Darwin’s classical theory of bodily tides in which we present the analytical expressions for the orbital and rotational evolution of the bodies and for the energy dissipation rates due to their tidal interaction. General formulas are given which do not depend on any assumption linking the tidal lags to the frequencies of the corresponding tidal waves (except that equa...

Instanton contributions to the Laplace sum-rules for correlation functions of scalar gluonic currents are calculated. It is demonstrated that the instanton contributions consist of an instanton continuum that contributes to all sum-rules and a (scale-independent) portion which makes a unique contribution to the sum-rule containing the low-energy theorem. These instanton contributions are found ...

We have studied the structure of the Borromean nucleus Li via the Coulomb breakup with a Pb target at 70 MeV/nucleon. Momentum vectors of the breakup particles, Li and two neutrons, were measured in coincidence to reconstruct the B(E1) energy spectrum. The strong E1 transitions were observed at Erel ∼ 0.3 MeV with the B(E1)=1.42(18)efm (=4.5(6)W.u.), which is the largest E1 strength ever observ...