Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet

Details Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet

1994-06-27

arxiv.org/abs/cond-mat/9406106v2

PRB 50, 13821 (1994)

Physics

Condensed Matter

8 pages of REVTeX 3.0, one PostScript file appended (Eq. 15 corrected, two recent references added, + some minor changes)

Scientific paper

10.1103/PhysRevB.50.13821

Using the J_1-J_2 model, we present a description of quantum phase transition
from Neel ordered to the spin-liquid state based on the modified spin wave
theory. The general expression for the gap in the spectrum in the spin-liquid
phase is presented.

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