5 citations · 10 across the 3 of their papers we have counts for
3 papers
gr-qc2015★ 2 cited
Emergent Universe as an interaction in the dark sector
Emiliano Marachlian, Iván E. Sánchez G., Osvaldo P. Santillán
A cosmological scenario where dark matter interacts with a variable vacuum energy for a spatially flat Friedmann-Robertson-Walker space-time is proposed and analysed to show that w…
gr-qc2014★ 3 cited
Extended tachyon field using form invariance symmetry
Iván E. Sánchez G
In this work we illustrate how form-invariance transformations (FIT) can be used to construct phantom and complementary tachyon cosmologies from standard tachyon field universes. W…
gr-qc2012★ 5 cited
Form invariance symmetry generates a large set of FRW cosmologies
Luis P. Chimento, Martín G. Richarte, Iván E. Sánchez G
We show that Einstein's field equations for spatially flat Friedmann-Robertson-Walker (FRW) space times have a form invariance symmetry (FIS) realized by the form invariance transf…