We have previously discussed the one dimensional multibarrier potential of finite range and found that under certain values of its total length L and the ratio c of total interval to total width it shows signs of chaos as well as phase transition and a transmission amplitude of unity. We show here that, like the infinite Kronig-Penney system which is arrayed along the whole spatial region it al...

The linewidth enhancement factor (LEF) describes the coupling between amplitude and phase fluctuations in a semiconductor laser, has recently been shown to be crucial component for frequency comb formation addition broadening. It necessarily arises from causality, as famously formulated by Kramers-Kronig relation, media with non-trivial dependence of susceptibility on intensity variations. Whil...

In this paper we find an universal mass scale for all $p-$forms in multi-brane worlds model. It is a known fact the model provides ultralight mode fields. However, to get this, Lagrangians considered literature are not covariant. order solve propose covariant version multi-localize $q-$form As consequence of covariance, show that $q$-form fields have with same gravitational one. That way there ...

We disclose the effects of Gauss–Bonnet gravity on properties holographic s-wave and p-wave superconductors, with higher-order corrections, in lower-dimensional spacetime. employ shooting method to solve equations motion numerically obtain effect different values mass, nonlinear gauge field parameters critical temperature condensation. Based our results, increasing each these three leads lower ...

We consider the electron dynamics and transport properties of one-dimensional continuous models with random, short-range correlated impurities. We develop a generalized Poincare map formalism to cast the Schrodinger equation for any potential into a discrete set of equations, illustrating its application by means of a specific example. We then concentrate on the case of a Kronig-Penney model wi...

The electronic structure of graphene-graphane superlattices with armchair interfaces is investigated with first-principles density-functional theory. By separately varying the widths, we find that the energy gap Eg is inversely proportional to the width of the graphene strip and that the gap increases as the hydrogenated strip becomes wider due to the enhanced confinement effect. It is further ...

The dust in the Small Magellanic Cloud (SMC), an ideal analog of primordial galaxies at high redshifts, differs markedly from that in the Milky Way by exhibiting a steeply rising far-ultraviolet extinction curve, an absence of the 2175 extinction feature, and a local minimum at ∼12 mm in its infrared emission spectrum, suggesting Å the lack of ultrasmall carbonaceous grains (i.e., polycyclic ar...