84 citations · 656 across the 80 of their papers we have counts for
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gr-qc2004★ 1 cited
Slice Energy and Conformal Frames in Theories of Gravitation
Spiros Cotsakis
We examine and compare the behaviour of the scalar field slice energy in different classes of theories of gravity, in particular higher-order and scalar-tensor theories. We find a…
gr-qc2004★ 68 cited
Future Singularities of Isotropic Cosmologies
Spiros Cotsakis, Ifigeneia Klaoudatou
We show that globally and regularly hyperbolic future geodesically incomplete isotropic universes, except for the standard all-encompassing `big crunch', can accommodate singularit…
gr-qc2004★ 16 cited
Slice Energy in Higher Order Gravity Theories and Conformal Transformations
Spiros Cotsakis
We study the generic transport of slice energy between the scalar field generated by the conformal transformation of higher-order gravity theories and the matter component. We give…