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Title: Exact spontaneous plaquette ground states for high-spin ladder models

Journal Article · · Physical Review B
OSTI ID:973056

We study the exchange physics in high-spin Mott insulating systems with S=3/2 which is realizable in ultracold atomic systems. The high symmetry of SO(5) or SU(4) therein renders stronger quantum fluctuations than the usual spin-1/2 systems. A spontaneous plaquette ground state without any site and bond spin orders is rigorously proved in a ladder spin-3/2 model, whose topological excitations exhibit fractionalization behavior. The generalization to the SU(N) plaquette state is also investigated.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515
OSTI ID:
973056
Report Number(s):
SLAC-REPRINT-2010-052; TRN: US1001694
Journal Information:
Physical Review B, Vol. 72, Issue 21; ISSN 1098-0121
Country of Publication:
United States
Language:
English

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