Quantum gravity can determine the dependence of gauge couplings in a scalar field, which is related to possible fifth forces and time varying fundamental “constants”. This prediction based on scaling solution functional flow equations. For momenta below field-dependent Planck mass quantum scale invariant standard model emerges as an effective low energy theory. small non-zero value infrared cut...

Universal collision rate constants are calculated for ultracold collisions of two like bosonic or fermionic heteronuclear alkali-metal dimers involving the species Li, Na, K, Rb, or Cs. Universal collisions are those for which the short range probability of a reactive or quenching collision is unity such that a collision removes a pair of molecules from the sample. In this case, the collision r...

abstract introduction: scaling and root planing is one of the most commonly used procedures during periodontal treatments. removal of calculus using conventional hand instruments is incomplete and rather time consuming. to find more efficient and less difficult instrumentation method, investigators have proposed lasers as an alternative or adjunct to hand instruments for scaling and root planin...

the interaction of bovine serum albumin ( bsa) and egg albumin with water solublephthalocyanine, cobalt (ιι) 4, 4′ , 4′′, 4′′′- tetrasulfophthalocyanine ( cotspc) , has been studiedby the uv- vis method at ph 7.0 and five different temperatures 20, 25, 30, 35 and 40°c. theformation constants have been elucidated by using spectrophotometric titration and computersquad program data refinement. th...

We compare two renormalization procedures, one based on the short distance behavior of heavy quark-antiquark free energies and the other by using bare Polyakov loops at different temporal entent of the lattice and find that both prescriptions are equivalent, resulting in renormalization constants that depend on the bare coupling. Furthermore these renormalization constants show Casimir scaling ...

Kinetics of irreversible reactions between polymer chains bearing reactive groups1-4 are interesting for many reasons. Every reaction event between a pair of functional groups relies on the motion and configurations of the host macromolecules to enable the groups to meet. Consequently, rate constants reflect not only the local chemistry of the reactive groups but also static and dynamical prope...

A super-persistent chaotic transient is characterized by the following scaling law for its average lifetime: tau approximately exp[C(p- p(c))(-alpha)] , where C>0 and alpha>0 are constants, p > or = p(c) is a bifurcation parameter, and p(c) is its critical value. As p approaches p(c) from above, the exponent in the exponential dependence diverges, leading to an extremely long transient lifetime...

ion errors than an unknown black box. Reviewers and the community needs to change its mindset as well – having blind faith in “standard tools,” while completely discounting other tools is not appropriate. We revisit the issue of open versus in-house tools in Section 4. 3.2. Pitfall 2: False confidence from validation overgeneralization in simulator papers, or tool misuses Simulator writers typi...

We give a global picture of the Ricci flow on the space of three-dimensional, unimodular, nonabelian metric Lie algebras considered up to isometry and scaling. The Ricci flow is viewed as a two-dimensional dynamical system for the evolution of structure constants of the metric Lie algebra with respect to an evolving orthonormal frame. This system is amenable to direct phase plane analysis, and ...