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Exceptional scalar theories in de Sitter space
James Bonifacio, Kurt Hinterbichler, Austin Joyce +1
The special galileon and Dirac-Born-Infeld (DBI) theories are effective field theories of a single scalar field that have many interesting properties in flat space. These theories…
Linking the Singularities of Cosmological Correlators
Daniel Baumann, Wei-Ming Chen, Carlos Duaso Pueyo +3
Much of the structure of cosmological correlators is controlled by their singularities, which in turn are fixed in terms of flat-space scattering amplitudes. An important challenge…
Ladder Symmetries of Black Holes: Implications for Love Numbers and No-Hair Theorems
Lam Hui, Austin Joyce, Riccardo Penco +2
It is well known that asymptotically flat black holes in general relativity have a vanishing static, conservative tidal response. We show that this is a result of linearly realized…