# Chiral Modular Bootstrap

29 Sep 2019 Ashrafi Maryam

Using modular bootstrap we show the lightest primary fields of a unitary compact two dimensional conformal field theory(with $c, \bar{c}>1$) has a conformal weight $h_1\le \frac{c}{12}+\mathcal{O}(1)$.This implies that the upper bound on the dimension of the lightest primary fields depends on their spin. In particular if the set of lightest primary fields includes extremal or near extremal states whose spin to dimension ratio $\frac{j}{\Delta}\approx 1$, the corresponding dimension is $\Delta\le \frac{c}{12}+\mathcal{O}(1)$... (read more)

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• HIGH ENERGY PHYSICS - THEORY