Condensed Matter

1409 Submissions

[2] viXra:1409.0123 [pdf] replaced on 2014-09-18 03:51:03

Critical Behavior of Heisenberg Chains Coupled to Phonons

Authors: Rainer W. Kühne
Comments: 4 Pages. This preprint was accepted for publication by Physicsal Review B. The author was forced by Prof. Klaus Fabricius to withdraw the paper from both Physical Review B and the arXiv preprint server. The author is still thinking that the paper is correct.

We present a quantum Monte Carlo study for the isotropic antiferromagnetic Heisenberg chain coupled to Einstein phonons. By investigating the behavior of the correlation length we find the critical exponent to depend on both the phonon frequency and the spin-phonon coupling constant. Hence, these systems change the universality class continuously with the spin-phonon coupling.
Category: Condensed Matter

[1] viXra:1409.0097 [pdf] submitted on 2014-09-12 14:37:20

Electro-Osmosis With Corrected Solution of Poisson-Boltzmann Equation That Satisfies Charge Conservation Principle

Authors: Rajib Chakraborty
Comments: 4 Pages.

We derive the electro-osmotic velocity profile in a micro-channel using a recently corrected charge density distribution within an electrolytic solution. Previous distribution did not take care of charge conservation principle while solving Poisson-Boltzmann equation and needed modification, hence the velocity profile also needs modification that we do here. Helmholtz-Smoluchowskii velocity scale is redefined, which accommodates Debye length parameter in it, unlike old definition.
Category: Condensed Matter