34 citations · 226 across the 37 of their papers we have counts for
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gr-qc2019★ 10 cited
Gauge-invariant spherical linear perturbations of wormholes in Einstein gravity minimally coupled to a self-interacting phantom scalar field
Francesco Cremona, Livio Pizzocchero, Olivier Sarbach
Recently, there has been quite a lot of interest in static, spherical wormhole spacetimes and the question of their stability with respect to time-dependent perturbations. The cons…
gr-qc2019★ 4 cited
On the necessity of phantom fields for solving the horizon problem in scalar cosmologies
Davide Fermi, Massimo Gengo, Livio Pizzocchero
We discuss the particle horizon problem in the framework of spatially homogeneous and isotropic scalar cosmologies. To this purpose we consider a Friedmann-Lemaitre-Robertson-Walke…