179 citations · 1.2k across the 42 of their papers we have counts for
Showing 2019 · hep-thShow all
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hep-th2019★ 17 cited
Ghostfree quadratic curvature theories with massive spin-2 and spin-0 particles
Katsuki Aoki, Shinji Mukohyama
We consider generic derivative corrections to the Einstein gravity and find new classes of theories without ghost around the Minkowski background by means of an extension of the sp…
hep-th2019★ 56 cited
Scalar-metric-affine theories: Can we get ghost-free theories from symmetry?
Katsuki Aoki, Keigo Shimada
We reveal the existence of a certain hidden symmetry in general ghost-free scalar-tensor theories which can only be seen when generalizing the geometry of the spacetime from Rieman…