Numerical lattice simulation confirms that Z_2 2-form gauge-field coupling produces fractional (half-integer) topological charge in SU(2) gauge theory and reduces topological autocorrelation.
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Numerical simulation of fractional topological charge in $SU(N)$ gauge theory coupled with $\mathbb{Z}_N$ 2-form gauge fields
Numerical lattice simulation confirms that Z_2 2-form gauge-field coupling produces fractional (half-integer) topological charge in SU(2) gauge theory and reduces topological autocorrelation.