359 citations · 2.7k across the 60 of their papers we have counts for
64 papers
Photon evolution through light-particle conversion in stochastic magnetic fields: Kramers--Kronig relations and universality
Wataru Chiba, Ryusuke Jinno, Kimihiro Nomura
We study photon conversion into light particles, such as dilatons, axions, and gravitons, induced by background magnetic fields, and formulate the resulting evolution in terms of t…
Particle Production via Rippled Bubble Walls
Ryusuke Jinno, Shota Nakagawa, Yuichiro Nakai +1
We investigate non-thermal particle production during first-order phase transitions in the presence of ultra-relativistic thick bubble walls with non-trivial internal structure. Ex…
A positive definite formulation of vacuum decay with reduced symmetry
José R. Espinosa, Ryusuke Jinno, Thomas Konstandin +2
The Euclidean bounce for vacuum decay enjoys an symmetry that is lost in the presence of impurities than can catalyze the decay. We present a formulation for the calculation…
Cancellation of loop corrections to soft scalar power spectrum
Yohei Ema, Muzi Hong, Ryusuke Jinno +1
We prove the absence of scale-invariant one-loop corrections to the superhorizon curvature perturbations from small-scale (potentially enhanced) scalar perturbations in a general i…
Axion-photon conversion in stochastic magnetic fields
Wataru Chiba, Ryusuke Jinno, Kimihiro Nomura
We investigate axion-photon conversion in stochastic magnetic fields, focusing on the evolution of the photon intensity and polarizations induced by conversion into axions. Assumin…
Acoustically driven dark matter freeze-out
Iason Baldes, Ryusuke Jinno
We extend the study of the effect of density perturbations to the well known thermal dark matter freeze-out scenario. We find enhancements in the cross section are…