The ground state energy of a polaron in a superlattice was calculated using the doubletime Green functions. The e ective mass of the polaron along the planes perpendicular to the superlattice axis was also calculated. The dependence of the ground state energy and the e ective mass along the planes perpendicular to the superlattice axis on the electron-phonon coupling constant and on the superla...

We recorded the signals of firing Retzius neurons from Hirudo medicinalis by field-effect transistors. The axon stump of dissociated cells was attached to an open gate coated with concanavalin A. We observed a new type of neuron-transistor coupling: the extracellular voltage transients beneath the neuron were dominated by a negative peak during the rising phase of the action potential with a we...

We consider the classical equations of the Born-Infeld-Abelian-Higgs model (with and without coupling to gravity) in an axially symmetric ansatz. A numerical analysis of the equations reveals that the (gravitating) Nielsen-Olesen vortices are smoothly deformed by the Born-Infeld interaction, characterized by a coupling constant β 2 , and that these solutions cease to exist at a critical value o...

We present a new time-splitting scheme for the numerical simulation of fluid-structure interaction between blood flow and vascular walls. This scheme deals in a successful way with the problem of the added mass effect. The scheme is modular and it embodies the stability properties of implicit schemes at the low computational cost of loosely coupled ones.

We consider solutions of the one-dimensional equation −u+(Q+ λV )u = 0 where Q : R → R is locally integrable, V : R → R is integrable with supp(V ) ⊂ [0, 1], and λ ∈ R is a coupling constant. Given a family of solutions {uλ}λ∈R which satisfy uλ(x) = u0(x) for all x < 0, we prove that the zeros of b(λ) := W [u0, uλ], the Wronskian of u0 and uλ, form a discrete set unless V ≡ 0. Setting Q(x) := −...

String representation of the [U(1)] gauge-invariant dual Abelian-Higgs–type theory, which is relevant to the SU(N)-QCD with the Θ-term and provides confinement of quarks, is derived. The N -dependence of the Higgs vacuum expectation value is found, at which the tension of the string joining quarks becomes N -independent, similarly to the real QCD. Contrary to that, the inverse coupling constant...

We calculate the transverse double-spin asymmetry for the production of dimuons in pp collisions as function of the dimuon rapidity and mass to next-to-leading order accuracy in the strong coupling constant. Predictions for Bnl-Rhic and Hera~ N are made by assuming a saturation of Soffer’s inequality at a low hadronic input scale. It seems unlikely that transversity can be measured in dimuon pr...

We will discuss some analogies between internal gauge theories and gravity in order to better understand the charge concept in gravity. A dimensional analysis of gauge theories in general and a strict deenition of elementary, monopole, and topological charges are applied to electromagnetism and to teleparallelism, a gauge theoretical formulation of Einstein gravity. As a result we inevitably nd...

The effect of hydrodynamic coupling on the spatial orientation of rigid bent rods in electric fields has been analyzed by Brownian dynamics simulations. Bead models for smoothly bent rods were constructed with dimensions of DNA double helices, and established simulation procedures were used to calculate their diffusion tensor, including the translational-rotational coupling tensor. The electric...

The general equation governing the mass, spin and angular momentum of a KerrNewman black hole applies equally well to a proton when the gravitational coupling constant predicted by a discrete fractal paradigm is used in the equation, along with the standard mass, spin and angular momentum of the proton. c © Electronic Journal of Theoretical Physics. All rights reserved.