Quasiclassical Hamiltonians for large-spin systems

Details Quasiclassical Hamiltonians for large-spin systems Quasiclassical Hamiltonians for large-spin systems

1999-05-05

arxiv.org/abs/cond-mat/9905061v2

Eur. Phys. J. B 14, 293-300 (2000)

Physics

Condensed Matter

Statistical Mechanics

8 Pages, 2 Figures, submitted to EPJB

Scientific paper

10.1007/s100510050132

We propose a method for obtaining effective classical Hamiltonians \cal H for many-body quantum spin systems with large spins. This method uses the coherent-state representation of the partition function Z and the cumulant expansion in powers of 1/S. For the quantum Hamiltonian \hat H of a Heisenberg form, the 1/S corrections in \cal H have a non-Heisenberg many-spin form. The effective Hamiltonian \cal H can be treated by methods familiar for classical systems. The non-Heisenberg terms in \cal H may be responsible for such effects as spin-Peierls transition and uplifting of the classical degeneracy by quantum fluctuations.

Affiliated with

Also associated with

No associations

Rating

Quasiclassical Hamiltonians for large-spin systems 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 Quasiclassical Hamiltonians for large-spin systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quasiclassical Hamiltonians for large-spin systems will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-148339