4 citations · 10 across the 3 of their papers we have counts for
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gr-qc2020
Integrable scalar cosmologies with matter and curvature
Davide Fermi, Massimo Gengo, Livio Pizzocchero
We show that several integrable (i.e., exactly solvable) scalar cosmologies considered by Fré, Sagnotti and Sorin (Nuclear Physics \textbf{B 877}(3) (2013), 1028--1106) can be gene…
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…
gr-qc2018
A time machine for free fall into the past
Davide Fermi, Livio Pizzocchero
Inspired by some recent works of Tippett-Tsang and Mallary-Khanna-Price, we present a new spacetime model containing closed timelike curves (CTCs). This model is obtained postulati…