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Semiclassics, Goldstone bosons and CFT data
A bstractHellerman et al. (arXiv:1505.01537) have shown that in a generic CFT the spectrum of operators carrying a large U(1) charge can be analyzed semiclassically in an expansion in inverse powersExpand
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Stability of Geodesically Complete Cosmologies
We study the stability of spatially flat FRW solutions which are geodesically complete, i.e. for which one can follow null (graviton) geodesics both in the past and in the future without everExpand
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Potential for general relativity and its geometry
The unique ghost-free mass and nonlinear potential terms for general relativity are presented in a dieomorphism
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Dynamics of Unitarization by Classicalization
Abstract We study dynamics of the classicalization phenomenon suggested in G. Dvali et al. [1] , according to which a class of non-renormalizable theories self-unitarizes at very high-energies viaExpand
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Cosmic acceleration and the helicity-0 graviton
We explore cosmology in the decoupling limit of a nonlinear covariant extension of Fierz-Pauli massive gravity obtained recently in arXiv:1007.0443. In this limit the theory is a scalar-tensor modelExpand
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Quasidilaton: Theory and cosmology
General Relativity (GR), with or without matter fields, admits a natural extension to a scale invariant theory that requires a dilaton. Here we show that the recently formulated massive GR, minimallyExpand
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Covariant Master Theory for Novel Galilean Invariant Models and Massive Gravity
Coupling the galileons to a curved background has been a tradeoff between maintaining second order equations of motion, maintaining the galilean shift symmetries, and allowing the background metricExpand
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Weakly broken galileon symmetry
Effective theories of a scalar ϕ invariant under the internal galileon symmetryϕ→ϕ+b{sub μ}x{sup μ} have been extensively studied due to their special theoretical and phenomenological properties. InExpand
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Nonlinear dynamics of 3D massive gravity
We explore the nonlinear classical dynamics of the three-dimensional theory of “New Massive Gravity” proposed by Bergshoeff, Hohm and Townsend. We find that the theory passes remarkably highlyExpand
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Nonrenormalization and naturalness in a class of scalar-tensor theories
We study the renormalization of some dimension-4, 7 and 10 operators in a class of nonlinear scalar-tensor theories. These theories are invariant under: (a) linear diffeomorphisms which represent anExpand
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