We study the transverse quantum ANNNI model in the region of high frustration (κ>0.5) using the density matrix renormalization group algorithm. We obtain a precise determination of the phase diagram, showing clear evidence for the existence of a floating phase, separated from the paramagnetic modulated phase by a high-order critical line ending at the multicritical point. We obtain simple and accurate formulas for the two critical lines. © 2007 The American Physical Society.

Evidence for a floating phase of the transverse ANNNI model at high frustration / Beccaria, Matteo; Campostrini, Massimo; Feo, Alessandra. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 76:9(2007). [10.1103/PhysRevB.76.094410]

Evidence for a floating phase of the transverse ANNNI model at high frustration

Campostrini, Massimo;Feo, Alessandra
2007

Abstract

We study the transverse quantum ANNNI model in the region of high frustration (κ>0.5) using the density matrix renormalization group algorithm. We obtain a precise determination of the phase diagram, showing clear evidence for the existence of a floating phase, separated from the paramagnetic modulated phase by a high-order critical line ending at the multicritical point. We obtain simple and accurate formulas for the two critical lines. © 2007 The American Physical Society.
Evidence for a floating phase of the transverse ANNNI model at high frustration / Beccaria, Matteo; Campostrini, Massimo; Feo, Alessandra. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 76:9(2007). [10.1103/PhysRevB.76.094410]
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11381/2839726
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