28 citations · 56 across the 5 of their papers we have counts for
5 papers
Viable Cosmological Solutions from Hybrid Potentials
Koralia Tzanni, John Miritzis
We study flat Friedmann-Lema\^ıtre-Robertson-Walker (FLRW) models with a perfect fluid matter source and a scalar field minimally coupled to matter with power-law-exponential \text…
Cosmological wave maps
Spiros Cotsakis, John Miritzis, Koralia Tzanni
We consider theories of gravity that include many coupled scalar fields with arbitrary couplings, in the geometric framework of wave maps. We examine the possibility of obtaining a…
Negative potentials and collapsing universes II
Roberto Giambò, John Miritzis, Koralia Tzanni
Completing a previous analysis started in [1], we study flat Friedmann--Lema\^ıtre--Robertson--Walker (FLRW) models with a perfect fluid matter source and a scalar field nonminimal…
Negative potentials and collapsing universes
Roberto Giambò, John Miritzis, Koralia Tzanni
We study Friedmann--Robertson--Walker models with a perfect fluid matter source and a scalar field nonminimally coupled to matter. We prove that a general class of bounded from abo…
Coupled quintessence with double exponential potentials
Koralia Tzanni, John Miritzis
We study flat Friedmann-Robertson-Walker (FRW) models with a perfect fluid matter source and a scalar field non minimally coupled to matter having a double exponential potential. I…