1 citations · 1 across the 2 of their papers we have counts for
3 papers
Quenched Cosmological Collider Physics: Random fields & white noise
Matheus Curado Ferreira
We study a massive spectator field in de Sitter space coupled linearly to a spatially quenched random source with a deterministic power-law time profile. For arbitrary temporal wei…
Non-relativistic Cosmological Collider Signals
Matheus C. Ferreira, Felipe T. Falciano, F. T. Falciano
We investigate a non-relativistic realization of the boostless cosmological collider in a scenario where inflationary interactions are mediated by a massive tilted-ghost spectator…
Amplifying the Cosmological Collider with Ghost Spectators
Matheus Curado Ferreira, F. T. Falciano, Guilherme L. Pimentel
Ghost inflation is a well-known framework in which cosmological fluctuations can generate enhanced primordial non-Gaussianity, typically of the equilateral type. In its original fo…