A bstract We consider Lorentzian correlators of local operators. In perturbation theory,
singularities occur when we can draw a position-space Landau diagram with null lines. In …

The double-scaled matrix integral has as its leading density of states the universal Cardy
density of primaries in a two-dimensional CFT, thus motivating the name Virasoro minimal …

We obtain a large class of new four-dimensional Argyres-Douglas theories by classifying
irregular punctures for the six-dimensional (2, 0) superconformal theory of ADE type on a …

A bstract We explore the stringy structure of 1/2-BPS bound states of NS fivebranes carrying
momentum or fundamental string charge, in the decoupling limits leading to little string …

A bstract We study two-dimensional (4, 4) superconformal field theories of central charge c=
6, corresponding to nonlinear sigma models on K3 surfaces, using the superconformal …

We introduce a new two-dimensional string theory defined by coupling two copies of
Liouville CFT with complex central charge $ c= 13\pm i\lambda $ on the worldsheet. This …

A bstract We derive recursive representations in the internal weights of N-point Virasoro
conformal blocks in the sphere linear channel and the torus necklace channel, and recursive …

We realize the fundamental representations of quantum algebras via the supersymmetric
Higgs mechanism in gauge theories with 8 supercharges on an $\Omega $-background. We …

A bstract We study the 2d\(\mathcal {N}= 4\) gauge theory descriptions of little strings on type
II NS5-branes. The IIB strings on N NS5-branes are described by the\(\mathcal {N}=\left (4 …

A bstract We study the time evolution of Renyi entanglement entropy for locally excited
states in two dimensional large central charge CFTs. It generically shows a logarithmical …