Effect of spin–phonon coupling on quantum correlation in the spin-1 XY model. (June 2021)

• Record Type: Journal Article
• Authors: Lima, L.S.
• Is Part Of: Solid state communications. Volume 332(2021)
• Publication Date: 2021-06
• Subjects: Quantum correlation -- spin–phonon -- XY model; Solid state chemistry -- Periodicals; Solid state physics -- Periodicals; Chimie de l'état solide -- Périodiques; Physique de l'état solide -- Périodiques; 530.41
• DOI: 10.1016/j.ssc.2021.114323
• Languages: English
• ISSNs: 0038-1098

Abstract

Abstract: The XY model coupled with an external system as a phonon system may be studied in terms of its own variables only. Hence, the effect of phonons external in such system can be included in a general class of functionals of the coordinates of the system only. The specific form of this influence functional representing the effect of definite and random forces of a linear dissipative system and combination of these are analyzed in detail. Thus the effect of the spin–phonon interaction on entanglement is investigated where we obtain a small effect of the spin–phonon coupling on von Neumann entropy. Highlights: The spin-1 quantum one-dimensional XY model with spin–phonon interaction. The calculation of the von Neumann entropy employing the SCHA approximation. Influence of spin–phonon coupling on quantum correlation and quantum entanglement.