864 citations · 11k across the 237 of their papers we have counts for
239 papers
Dynamical dark energy parameterizations in VCDM
Simran Arora, Antonio De Felice, Shinji Mukohyama
In the context of a theory of minimally modified gravity called VCDM, one can realize any cosmological behavior at the level of the homogeneous and isotropic background without int…
Observational bounds on extended minimal theories of massive gravity: New limits on the graviton mass
Antonio De Felice, Suresh Kumar, Shinji Mukohyama +1
In this work, we derive for the first time observational constraints on the extended Minimal Theory of Massive Gravity (eMTMG) framework in light of Planck-CMB data, geometrical me…
Instability of scalarized compact objects in Einstein-scalar-Gauss-Bonnet theories
Masato Minamitsuji, Shinji Mukohyama
We investigate the linear stability of scalarized black holes (BHs) and neutron stars (NSs) in the Einstein-scalar-Gauss-Bonnet (GB) theories against the odd- and even-parity pertu…
Spherical scalar collapse in a type-II minimally modified gravity
Atabak Fathe Jalali, Paul Martens, Shinji Mukohyama
We investigate the spherically-symmetric gravitational collapse of a massless scalar field in the framework of a type-II minimally modified gravity theory called VCDM. This theory…
Global and Local Stability for Ghosts Coupled to Positive Energy Degrees of Freedom
Cédric Deffayet, Aaron Held, Shinji Mukohyama +1
Negative kinetic energies correspond to ghost degrees of freedom, which are potentially of relevance for cosmology, quantum gravity, and high energy physics. We present a novel wid…
Soft hair, dressed coordinates and information loss paradox
Francesco Di Filippo, Naoki Ogawa, Shinji Mukohyama +1
Understanding the dynamics of soft hair might shine some light on the information loss paradox. In this paper, we introduce a new coordinate system, dressed coordinates, in order t…