We study the effect of the degeneracy factor in the energy levels of the well-known Landau problem for a magnetic engine. The scheme of the cycle is composed of two adiabatic processes and two isomagnetic processes driven by a quasi-static modulation of external magnetic field intensity. We derive the analytical expression of the relation between the magnetic field and temperature along the adi...

We study the problem of minimizing the timeaverage expected Age of Information for status updates sent by an energy-harvesting source with a finite-capacity battery. In prior literature, optimal policies were observed to have a threshold structure under Poisson energy arrivals, for the special case of a unit-capacity battery. In this paper, we generalize this result to any (integer) battery cap...

The problem of determining of the normalization constant of a wave function describing an arbitrary type of an infinite motion for a one-dimensional potential is discussed. It is shown that for the cases of the momentum or the quasi-wave number representations the normalization constant does not depend on the representation parameter. In contrast to these cases for the energy representation the...

This paper presents the construction of a novel representation of shape called the scale-spectrum space, which makes both spatial frequency channels of speciic importance (concerning spectrum information being isolated) as well as signiicant scale levels from the viewpoint of these spectrum bands explicit. The scale concept in the vision literature stands for the characteristic length over whic...

The recent arrival of smartphone-sensing methods has made it possible to objectively track consequential everyday health-related behaviors rather than rely on self-reports. To evaluate the viability of using sensing methods to monitor such behaviors in detail, the present research used a smartphonesensing application to describe the patterns of stability and change that characterize a cohort of...

Channel coupling via decay products is developed to describe energy shifts, level mixing as well as the possibility of new resonances in c¯ c, b ¯ b systems. The new ingredients involve: 1) the Weinberg eigenvalue method to describe coupled-channel resonances and wave functions in a unitary way; 2) the pair creation vertex, derived nonperturbatively, having the 3 P 0 form with calculable coeffi...

We studied the hadronic decays of excited states of heavy mesons (D, Ds, B and Bs) to lighter states by emission of π, η or K. Wavefunctions and energy levels of these excited states are determined using a Dirac equation for the light quark in the potential generated by the heavy quark (including first order corrections in the heavy quark expansion). Transition amplitudes are computed in the co...

We have calculated the energy levels of the hydrogen atom and as well the Lamb shift within the noncommutative quantum electrodynamics theory. The results show deviations from the usual QED both on the classical and on the quantum levels. On both levels, the deviations depend on the parameter of space/space noncommutativity. MIRAMARE TRIESTE October 2000 E-mail addresses: Masud.Chaicliian@liels...

We present an exact time-dependent solution to the effective D-brane worldvolume theory which describes an inhomogeneous decay of a brane-antibrane system. We compute the quantum energy flux induced by the particle creation in this inhomogeneous and time-dependent background. We find that this calculation is essentially equivalent to that of the moving mirror system. In the initial stage, the e...