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…
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…
Sudden cosmological singularities in Aether scalar-tensor theories
João LuÃs Rosa, Tom Zlosnik
In this work we analyze the possibility of sudden cosmological singularities, also known as type-II singularities, in the background of a Friedmann-Lemaître-Robertson-Walker (FLRW…