4 papers
Probing the Strong Equivalence Principle through the External Field Effect. How Do Two Masses Fall?
Ankit Kumar, Kelvin Tang Tee Tniam, Peng Chengxiaohe +5
Despite compelling evidence, the absence of a confirmed dark matter particle has sustained interest in modified gravity as an alternative explanation for the observed phenomenology…
On the Bondi accretion of a self-interacting complex scalar field
Dražen Glavan, Alexander Vikman, Tom Zlosnik
Scalar fields with a global U(1) symmetry often appear in cosmology and astrophysics. We study the spherically-symmetric, stationary accretion of such a classical field onto a Schw…
Removing spurious degrees of freedom from EFT of gravity
Dražen Glavan, Shinji Mukohyama, Tom Zlosnik
In the effective field theory approach to gravity, the Lagrangian density for general relativity is supplemented by generally covariant terms of higher order in the Riemann tensor…
Critical reassessment of the restricted Weyl symmetry
Dražen Glavan, Ruggero Noris, Tom Zlosnik
A class of globally scale-invariant scalar-tensor theories have been proposed to be invariant under a larger class of transformations that take the form of local Weyl transformatio…