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20 papers · 2 filters
An Ignoble Approach to Large Field Inflation
Nemanja Kaloper, Albion Lawrence, Lorenzo Sorbo
We study an inflationary model developed by Kaloper and Sorbo, in which the inflaton is an axion with a sub-Planckian decay constant, whose potential is generated by mixing with a…
Can you hear the shape of dual geometries?
Richard Eager, Michael Gary, Matthew M. Roberts
We compute the sub-leading terms in the Tian-Yau-Zelditch asymptotic expansion of the partition function for dual giant gravitons on AdS5 L5 and provide a bulk interpretat…
Cosmic Acceleration and the Helicity-0 Graviton
Claudia de Rham, Gregory Gabadadze, Lavinia Heisenberg +1
We explore cosmology in the decoupling limit of a non-linear covariant extension of Fierz-Pauli massive gravity obtained recently in arXiv:1007.0443. In this limit the theory is a…
Resummation of Massive Gravity
Claudia de Rham, Gregory Gabadadze, Andrew J. Tolley
We construct four-dimensional covariant non-linear theories of massive gravity which are ghost-free in the decoupling limit to all orders. These theories resum explicitly all the n…
String Theory and The Velo-Zwanziger Problem
Massimo Porrati, Rakibur Rahman, Augusto Sagnotti
We examine the behavior of the leading Regge trajectory of the open bosonic string in a uniform electromagnetic background and present a consistent set of Fierz-Pauli conditions fo…
Galilean symmetry in the effective theory of inflation: new shapes of non-Gaussianity
Paolo Creminelli, Guido D'Amico, Marcello Musso +2
We study the consequences of imposing an approximate Galilean symmetry on the Effective Theory of Inflation, the theory of small perturbations around the inflationary background. T…