162 citations · 1.7k across the 40 of their papers we have counts for
5 papers · 1 filter
Inflationary Magnetogenesis with Broken Local U(1) Symmetry
Guillem Domènech, Chunshan Lin, Misao Sasaki
We point out that a successful inflationary magnetogenesis could be realised if we break the local U(1) gauge symmetry during inflation. The effective electric charge is fixed as a…
Stationary bubbles and their tunneling channels toward trivial geometry
Pisin Chen, Guillem Domènech, Misao Sasaki +1
In the path integral approach, one has to sum over all histories that start from the same initial condition in order to obtain the final condition as a superposition of histories.…
Derivative-dependent metric transformation and physical degrees of freedom
Guillem Domènech, Shinji Mukohyama, Ryo Namba +3
We study metric transformations which depend on a scalar field and its first derivatives and confirm that the number of physical degrees of freedom does not change under such t…
Cosmological disformal invariance
Guillem Domènech, Atsushi Naruko, Misao Sasaki
The invariance of physical observables under disformal transformations is considered. It is known that conformal transformations leave physical observables invariant. However, whet…
Conformal Frame Dependence of Inflation
Guillem Domènech, Misao Sasaki
Physical equivalence between different conformal frames in scalar-tensor theory of gravity is a known fact. However, assuming that matter minimally couples to the metric of a parti…