Abstract We investigate the viability of inflation with a spectator sector comprised non-Abelian gauge fields coupled through higher order operator. dub this model “spectator Gauge-flation”. study predictions for amplitude and tensor tilt chiral gravitational waves conclude that slightly red-tilted power spectrum is preferred . As related models, enhancement r...

We present exploratory analyses of the 3D gluon content proton via a study unpolarized and polarized TMDs at twist-2, calculated in spectator model for parent nucleon. Our approach embodies flexible parametrization spectator-mass function, suited to describe both moderate small-x effects. All these studies can serve as useful guidance investigation dynamics inside nucleons nuclei, which constit...