Large-scale QMC simulations identify a multicritical point in the phase diagram of the (2+1)D SO(5) nonlinear sigma model with WZW term.
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In quadratic band touching fermionic systems, vortex cores support color-degenerate competing orders from SO(5) mass algebra splitting zero modes, while skyrmions allow additional Kekule or s-wave orders.
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Numerical evidence of a critical point in the (2+1)D SO(5) nonlinear sigma model with Wess-Zumino-Witten term
Large-scale QMC simulations identify a multicritical point in the phase diagram of the (2+1)D SO(5) nonlinear sigma model with WZW term.
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Color degeneracy of competing orders near topological defects cores in planar quadratic band touching systems
In quadratic band touching fermionic systems, vortex cores support color-degenerate competing orders from SO(5) mass algebra splitting zero modes, while skyrmions allow additional Kekule or s-wave orders.