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Conical singularities and the Vainshtein screening in full GLPV theories
Ryotaro Kase, Shinji Tsujikawa, Antonio De Felice
In Gleyzes-Langlois-Piazza-Vernizzi (GLPV) theories, it is known that the conical singularity arises at the center of a spherically symmetric body () in the case where the par…
The Subaru FMOS galaxy redshift survey (FastSound). IV. New constraint on gravity theory from redshift space distortions at
Teppei Okumura, Chiaki Hikage, Tomonori Totani +22
We measure the redshift-space correlation function from a spectroscopic sample of 2783 emission line galaxies from the FastSound survey. The survey, which uses the Subaru Telescope…
Cosmology with a successful Vainshtein screening in theories beyond Horndeski
Ryotaro Kase, Shinji Tsujikawa, Antonio De Felice
We propose a dark energy model where a scalar field has nonlinear self-interactions in the presence of a dilatonic coupling with the Ricci scalar. This belongs to a sub-class o…
Existence and disappearance of conical singularities in Gleyzes-Langlois-Piazza-Vernizzi theories
Antonio De Felice, Ryotaro Kase, Shinji Tsujikawa
In a class of Gleyzes-Langlois-Piazza-Vernizzi (GLPV) theories, we derive both vacuum and interior Schwarzschild solutions under the condition that the derivatives of a scalar fiel…
Cosmological disformal transformations to the Einstein frame and gravitational couplings with matter perturbations
Shinji Tsujikawa
The disformal transformation of metric , where is a scalar field with the kinetic energy ,…
Possibility of realizing weak gravity in redshift space distortion measurements
Shinji Tsujikawa
We study the possibility of realizing a growth rate of matter density perturbations lower than that in General Relativity. Using the approach of the effective field theory of modif…