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Publications Influence

Semiclassics, Goldstone bosons and CFT data

- A. Monin, David Pirtskhalava, R. Rattazzi, Fiona K. Seibold
- Physics
- 9 November 2016

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 powers… Expand

49 7- PDF

Stability of Geodesically Complete Cosmologies

- P. Creminelli, David Pirtskhalava, Luca Santoni, E. Trincherini
- Physics
- 13 October 2016

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 ever… Expand

65 7- PDF

Potential for general relativity and its geometry

- G. Gabadadze, Kurt Hinterbichler, David Pirtskhalava, Yanwen Shang
- Physics
- 8 July 2013

The unique ghost-free mass and nonlinear potential terms for general relativity are presented in a dieomorphism

47 4- PDF

Dynamics of Unitarization by Classicalization

- G. Dvali, David Pirtskhalava
- Physics
- 30 October 2010

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 via… Expand

61 4- PDF

Cosmic acceleration and the helicity-0 graviton

- C. D. Rham, G. Gabadadze, Lavinia Heisenberg, David Pirtskhalava
- Physics
- 8 October 2010

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 model… Expand

174 3- PDF

Quasidilaton: Theory and cosmology

- G. D'Amico, G. Gabadadze, L. Hui, David Pirtskhalava
- Physics
- 19 June 2012

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, minimally… Expand

97 3- PDF

Covariant Master Theory for Novel Galilean Invariant Models and Massive Gravity

- G. Gabadadze, Kurt Hinterbichler, J. Khoury, David Pirtskhalava, M. Trodden
- Physics
- 28 August 2012

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 metric… Expand

54 3- PDF

Weakly broken galileon symmetry

- David Pirtskhalava, Luca Santoni, E. Trincherini, F. Vernizzi
- Physics
- 30 April 2015

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. In… Expand

64 2- PDF

Nonlinear dynamics of 3D massive gravity

- C. D. Rham, G. Gabadadze, David Pirtskhalava, A. Tolley, I. Yavin
- Physics
- 7 March 2011

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 highly… Expand

48 2- PDF

Nonrenormalization and naturalness in a class of scalar-tensor theories

- C. D. Rham, G. Gabadadze, Lavinia Heisenberg, David Pirtskhalava
- Physics
- 17 December 2012

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 an… Expand

103 2- PDF