Emergent SU(3) Symmetry in Random Spin-1 Chains

Author(s)

Quito, V. L. ^[1] ; Hoyos, Jose A. ^[2] ; Miranda, E. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Physical Review Letters; v. 115, n. 16 OCT 14 2015.
• Web of Science Citations: 9

Abstract

We show that generic SU(2)-invariant random spin-1 chains have phases with an emergent SU(3) symmetry. We map out the full zero-temperature phase diagram and identify two different phases: (i) a conventional random-singlet phase (RSP) of strongly bound spin pairs {[}SU(3) mesons{''}] and (ii) an unconventional RSP of bound SU(3) baryons, {''} which are formed, in the great majority, by spin trios located at random positions. The emergent SU(3) symmetry dictates that susceptibilities and correlation functions of both dipolar and quadrupolar spin operators have the same asymptotic behavior. (AU)

• FAPESP's process: 09/17531-3 - Studies of strongly disordered quantum systems
• Grantee: Victor Luiz Quito
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)