M ay 2 00 6 Computation of entropy increase for Lorentz gas and hard disks

Entropy production in diffusion-reaction systems: the reactive random Lorentz gas.

We report the study of a random Lorentz gas with a reaction of isomerization A<==>B between two colors of moving particles elastically bouncing on hard disks. The reaction occurs when the moving particles collide on catalytic disks, which constitute a fraction of all the disks. Under dilute-gas conditions, the reaction-diffusion process is ruled by two coupled Boltzmann-Lorentz equations for th...

Influence of inclined Lorentz forces on entropy generation analysis for viscoelastic fluid over a stretching sheet with nonlinear thermal radiation and heat source/sink

In the present study, an analytical investigation on the entropy generation examination for viscoelastic fluid flow involving inclined magnetic field and non-linear thermal radiation aspects with the heat source and sink over a stretching sheet has been done. The boundary layer governing partial differential equations were converted in terms of appropriate similarity transformations to non-line...

ar X iv : h ep - t h / 06 04 16 4 v 3 1 M ay 2 00 6 On the consistency of Lorentz invariance violation in QED induced by fermions in constant axial – vector background

We show that the induced parity–even Lorentz invariance violation can be unambiguously calculated in the physically justified and minimally broken dimensional regularization scheme, suitably tailored for a spontaneous Lorentz symmetry breaking in a field theory model. The quantization of the Lorentz invariance violating quantum electrodynamics is briefly examined and shown to be consistent eith...

ar X iv : h ep - p h / 04 05 11 9 v 1 1 3 M ay 2 00 4 The Lorentz and CPT violating effects on the charged

1 0 M ay 2 00 9 Holographic Relation in Yang ’ s Quantized Space - Time Algebra and Area - Entropy Relation in D 0 Brane Gas System

In the preceding paper, we derived a kind of kinematical holographic relation (KHR) in the Lorentzcovariant Yang’s quantized space-time algebra (YSTA). It essentially reflects the fundamental nature of the noncommutative geometry of YSTA and its representation, that is, a definite kinematical reduction of spatial degrees of freedom in comparison with the ordinary lattice space. On the basis of ...