42 citations · 42 across the 1 of their papers we have counts for
3 papers
gr-qc2013★ 42 cited
An Exponential F(R) Dark Energy Model
V. K. Oikonomou
We present an exponential modified gravity model in the Jordan and the Einstein frame. We use a general approach in order to investigate and demonstrate the viability of the…
hep-th2011
De Sitter Cosmic Strings and Supersymmetry
V. K. Oikonomou
We study massive spinor fields in the geometry of a straight cosmic string in a de Sitter background. We find a hidden N=2 supersymmetry in the fermionic solutions of the equations…
hep-th2011
F-theory and the Witten Index
V. K. Oikonomou
We connect the fermionic fields, localized on the intersection curve of two D7-branes with zero background flux, to a N=2 supersymmetric quantum mechanics algebra, within the t…