Geometric phases and criticality in spin-chain systems

Angelo Carollo, Jiannis K. Pachos, Angelo C. M. Carollo

Risultato della ricerca: Articlepeer review

190 Citazioni (Scopus)

Abstract

A relation between geometric phases and criticality of spin chains is established. As a result, we show how geometric phases can be exploited as a tool to detect regions of criticality without having to undergo a quantum phase transition. We analytically evaluate the geometric phase that corresponds to the ground and excited states of the anisotropic XY model in the presence of a transverse magnetic field when the direction of the anisotropy is adiabatically rotated. It is demonstrated that the resulting phase is resilient against the main sources of errors. A physical realization with ultracold atoms in optical lattices is presented
Lingua originaleEnglish
pagine (da-a)157203-1-157203-4
Numero di pagine4
RivistaPhysical Review Letters
Volume95
Stato di pubblicazionePublished - 2005

All Science Journal Classification (ASJC) codes

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