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Integral almost square-free modular categories (1512.02012v2)
Published 7 Dec 2015 in math.CT and math.QA
Abstract: We study integral almost square-free modular categories; i.e., integral modular categories of Frobenius-Perron dimension $pnm$, where $p$ is a prime number, $m$ is a square-free natural number and ${\rm gcd}(p,m)=1$. We prove that if $n\leq 5$ or $m$ is prime with $m<p$ then they are group-theoretical. This generalizes several results in the literature and gives a partial answer to the question posed by the first author and H. Tucker. As an application, we prove that an integral modular category whose Frobenius-Perron dimensions is odd and less than $1125$ is group-theoretical.