4 citations · 9 across the 5 of their papers we have counts for
5 papers
Repulsive ultralight dark matter from Hosotani mechanism
Philippe Brax, Patrick Valageas
We build an ultralight dark matter model with repulsive self-interactions, starting from a 5D action that only includes a gauge field and several massive and charged free fe…
Testing scalar dark matter clumps with Pulsar Timing Arrays
Philippe Brax, Patrick Valageas
Scalar dark matter is a viable alternative to particle dark matter models such as Weakly Interacting Massive Particles (WIMPS). This is particularly the case for scalars with a low…
Primordial gravitational waves in DHOST inflation
Philippe Brax, Andrei Lazanu
We consider DHOST inflationary models with a shift symmetry leading to a de Sitter space-time at the background cosmological level. Deviations from scale invariance of the scalar a…
Formation of solitons and their transitions in scalar-field dark matter models with a non-polynomial self-interaction potential
Raquel Galazo García, Philippe Brax, Patrick Valageas
We study the formation of solitons inside scalar-field dark matter halos with a non-polynomial self-interaction potential. We consider a self-interaction potential that is quartic…
CMB bispectrum constraints on DHOST inflation
Wuhyun Sohn, Andrei Lazanu, Philippe Brax +1
We present the first direct constraints on a Degenerate Higher Order Scalar Tensor (DHOST) inflation model using the Planck 2018 Cosmic Microwave Background (CMB) results on non-Ga…