Breakdown of the Onsager reaction field theory in two dimensions

Details Breakdown of the Onsager reaction field theory in two dimensions Breakdown of the Onsager reaction field theory in two dimensions

2000-03-03

arxiv.org/abs/cond-mat/0003040v1

Physics

Condensed Matter

Statistical Mechanics

3 pages

Scientific paper

It is shown that for the spin 1/2 anisotropic Heisenberg model the result for the transition temperature is completely insensitive to the anisotropy within the Onsager reaction field theory, which yields a vanishing T_c in two dimensions, in total conflict with the expected finite T_c, increasing with anisotropy. This establishes that the breakdown of the Onsager reaction field theory in two dimensions is not limited to the Ising model, but actually extends over the whole range of anisotropy. Therefore, for the isotropic case, the results of vanishing T_c and exponential dependence of spin correlation length should be seen as mere coincidence.

Affiliated with

Also associated with

No associations

Rating

Breakdown of the Onsager reaction field theory in two dimensions does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Breakdown of the Onsager reaction field theory in two dimensions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Breakdown of the Onsager reaction field theory in two dimensions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-501344