Physics – Condensed Matter – Other Condensed Matter
Scientific paper
2005-03-03
Physics
Condensed Matter
Other Condensed Matter
4 pages, 3 figures, errors in references removed
Scientific paper
We develop a novel renormalization approach for frustrated quantum antiferromagnets. It is designed to consistently treat spin-wave interactions all over the magnetic Brillouin zone, including high-energy modes in outer regions as well as low energy modes in the center. Focusing on the paradigmatic $J_1$-$J_2$ model, we find a unifying description of the second-order transition between the N\'eel phase and the paramagnetic phase and the first-order transition between the N\'eel phase and the columnar phase. Our approach provides explicit results for the renormalized values of the spin stiffness and spin-wave velocity characterizing the low-energy magnons in the N\'eel phase.
Krüger Frank
Scheidl Stefan
No associations
LandOfFree
Quantum Phase Transitions of Frustrated Heisenberg Antiferromagnets: a Comprehensive Renormalization Approach 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 Quantum Phase Transitions of Frustrated Heisenberg Antiferromagnets: a Comprehensive Renormalization Approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Quantum Phase Transitions of Frustrated Heisenberg Antiferromagnets: a Comprehensive Renormalization Approach will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-24001