Quantum Phase Transition in the Frustrated Heisenberg Antiferromagnet
classification
❄️ cond-mat
keywords
phasequantumspin-liquidtransitionantiferromagnetdescriptionexpressionfrustrated
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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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