2 papers
hep-th2026
Analytical Cosmological Collider at Strong Mixing in Laplace Space
Nathan Belrhali, Arthur Poisson, Sébastien Renaux-Petel
Primordial non-Gaussianities are at their largest when the curvature perturbation is coupled to a massive field by a mixing too strong to be treated perturbatively. We show that th…
physics.plasm-ph2024
Beam focusing and consequences for Doppler Backscattering measurements
Juan Ruiz Ruiz, Felix I. Parra, Valerian H. Hall-Chen +5
The phenomenon of beam focusing of microwaves in a plasma near a turning-point caustic is discussed in the context of the analytical solution to the Gaussian beam-tracing equations…