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gr-qc2014★ 13 cited
From Lovelock to Horndeski's generalised scalar-tensor theory
Christos Charmousis
We review and discuss some recent progress in Lovelock and Horndeski theories modifying Einstein's General Relativity. Using as our guide the uniqueness properties of these modifie…
gr-qc2014★ 129 cited
Black Holes in Bi-scalar Extensions of Horndeski Theories
Christos Charmousis, Theodoros Kolyvaris, Eleftherios Papantonopoulos +1
We study certain bi-scalar-tensor theories emanating from conformal symmetry requirements of Horndeski's four-dimensional action. The former scalar is a Galileon with shift symmetr…