4 papers
Torsion induced current-scalaron coupling in Einstein-Cartan gravity
Minxi He, Muzi Hong, Kyohei Mukaida
We investigate the matter current couplings with the scalar degrees of freedom originated from the torsion in Einstein-Cartan (EC) gravity. It has been shown in previous studies th…
Dynamical dark energy in the no-scale Brans-Dicke gravity
Muzi Hong, Kyohei Mukaida, Tsutomu T. Yanagida
We add a new scalar field in the no-scale Brans-Dicke gravity and require it to have a global O(2) symmetry with the original scalar field in the Brans-Dicke gravity. This gives us…
Cancellation of one-loop correction to soft tensor power spectrum
Yohei Ema, Muzi Hong, Ryusuke Jinno +1
We demonstrate that there are no scale-invariant one-loop corrections to the superhorizon tensor perturbations from small-scale (potentially enhanced) scalar perturbations, irrespe…
Increase of in regularized pole inflation & Einstein-Cartan gravity
Minxi He, Muzi Hong, Kyohei Mukaida
We show that the regularization of the second order pole in the pole inflation can induce the increase of , which may be important after the latest data release of cosmic micr…