Journal Title

Physical Review E

Publication Date

2017

Abstract

In this work we analyze the ground-state properties of the s = 1/2 one-dimensional axial next-nearest-neighbor Ising model in a transverse field using the quantum fidelity approach. We numerically determined the fidelity susceptibility as a function of the transverse field Bx and the strength of the next-nearest-neighbor interaction J2, for systems of up to 24 spins. We also examine the ground-state vector with respect to the spatial ordering of the spins. The ground-state phase diagram shows ferromagnetic, floating, and (2,2) phases, and we predict an infinite number of modulated phases in the thermodynamic limit (L→∞). Paramagnetism only occurs for larger magnetic fields. The transition lines separating the modulated phases seem to be of second order, whereas the line between the floating and the (2,2) phases is possibly of first order.

Subjects

Condensed Matter--Statistical Mechanics

Publication Information

Archived version is the final published version.

DOI

10.1103/PhysRevE.96.042140

Peer-Reviewed

Yes

Document Type

Journal Article

Included in

Physics Commons

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