Journal Title

Physical Review E

Publication Date

2014

Abstract

We study the ground-state properties of a spin-1/2 model on a chain containing four-spin Ising-like interactions in the presence of both transverse and longitudinal magnetic fields. We use entanglement entropy and finite-size scaling methods to obtain the phase diagrams of the model. Our numerical calculations reveal a rich variety of phases and the existence of multicritical points in the system. We identify phases with both ferromagnetic and antiferromagnetic orderings. We also find periodically modulated orderings formed by a cluster of like spins followed by another cluster of opposite like spins. The quantum phases in the model are found to be separated by either first- or second-order transition lines.

Subjects

Magnetic fields; Quantum physics; Transverses

Publication Information

Physical Review E, 2014, Volume 89, Issue 3, 1-5.

© 2014 American Physical Society

Archived version is the final published version.

DOI

10.1103/PhysRevE.89.032143

Peer-Reviewed

Yes

Document Type

Journal Article

Included in

Physics Commons

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