Spherical symmetric dust collapse in vector-tensor gravity
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DOI: 10.1103/physrevd.98.064007
Abstract: There is a viable vector-tensor gravity (VTG) theory, whose vector field produces repulsive forces leading to important effects. In the background universe, the effect of these forces is an accelerated expansion identical to that produced… read more here.
Keywords: vector; vector tensor; collapse; tensor gravity ... See more keywords
2D Stress Tensor for 4D Gravity.
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DOI: 10.1103/physrevlett.119.121601
Abstract: We use the subleading soft-graviton theorem to construct an operator T_{zz} whose insertion in the four-dimensional tree-level quantum gravity S matrix obeys the Virasoro-Ward identities of the energy momentum tensor of a two-dimensional conformal field… read more here.
Keywords: gravity; tensor gravity; stress tensor;
Nutty black holes in Galileon scalar-tensor gravity
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Modern Physics A"
DOI: 10.1142/s0217751x18501890
Abstract: Einstein gravity supplemented by a scalar field nonminimally coupled to a Gauss–Bonnet term provides an example of model of scalar-tensor gravity where hairy black holes do exist. We consider the classical equations within a metric… read more here.
Keywords: black holes; nutty black; tensor gravity; scalar tensor ... See more keywords