96 citations · 1.2k across the 37 of their papers we have counts for
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gr-qc2015★ 18 cited
Universal instability of hairy black holes in Lovelock-Galileon theories in D dimensions
Kazufumi Takahashi, Teruaki Suyama, Tsutomu Kobayashi
We analyze spherically symmetric black hole solutions with time-dependent scalar hair in a class of Lovelock-Galileon theories, which are the scalar-tensor theories with second-ord…
gr-qc2015★ 4 cited
Equation of state of dark energy in f(R) gravity
Kazufumi Takahashi, Jun'ichi Yokoyama
f(R) gravity is one of the simplest generalizations of general relativity, which may explain the accelerated cosmic expansion without introducing a cosmological constant. Transform…