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Conformal transformations in metric-affine gravity and ghosts
(Wiley-VCH Verlag, 2012-08)
Conformal transformations play a widespread role in gravity theories in regard to their cosmological and other implications. In the pure metric theory of gravity, conformal transformations change the frame to a new one ...
Higgsed Stueckelberg vector and Higgs quadratic divergence
Here we show that, a hidden vector field whose gauge invariance is ensured by a Stueckelberg scalar and whose mass is spontaneously generated by the Standard Model Higgs field contributes to quadratic divergences in the ...
Scalars, vectors and tensors from metric-affine gravity
The metric-affine gravity provides a useful framework for analyzing gravitational dynamics since it treats metric tensor and affine connection as fundamentally independent variables. In this work, we show that, a metric-affine ...
Relativistic MOND from modified energetics
We begin to investigate the question of what modifications in the energy-momentum tensor can yield the correct MOND regime. As a starting study, we refrain from insisting on an action principle and focus exclusively on the ...