Aiming at nonexperts, the key mechanisms of higher-spin extensions of ordinary gravities in
four dimensions and higher are explained. An overview of various no-go theorems for low …

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Higher Spin Gravity refers to extensions of gravity including at least one field of spin greater
than two. These extensions are expected to provide manageable models of quantum gravity …

We propose a duality between the 2d WN minimal models in the large N't Hooft limit, and a
family of higher spin theories on AdS 3. The 2d conformal field theories (CFTs) can be …

A bstract Motivated by the prospect of constraining microscopic models, we calculate the
exact one-loop corrected de Sitter entropy (the logarithm of the sphere partition function) for …

A bstract Higher Spin Gravities are scarce, but covariant actions for them are even scarcer.
We construct covariant actions for contractions of Chiral Higher Spin Gravity that represent …

A bstract We present a class of dS/CFT correspondence between two-dimensional CFTs
and three-dimensional de Sitter spaces. We argue that such a CFT includes an SU (2) WZW …

A bstract Assuming the existence of a field theory in D dimensions dual to (D+ 1)-
dimensional flat space, governed by the asymptotic symmetries of flat space, we make some …

A bstract Relaxing the Bondi gauge, the solution space of three-dimensional gravity in the
metric formulation has been shown to contain an additional free function that promotes the …

We revisit the problem of interactions of higher-spin fields in flat space. We argue that all no-
go theorems can be avoided by the light-cone approach, which results in more interaction …