10 citations · 11 across the 6 of their papers we have counts for
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gr-qc2024
Interacting hypersurfaces and multiple scalar-tensor theories
Yang Yu, Zheng Chen, Yu-Min Hu +1
We propose a novel method to construct ghost-free multiple scalar-tensor theories. The key idea is to use the geometric quantities of hypersurfaces defined by the scalar fields, ra…
hep-th2024
Parity-violating scalar-tensor theory and the Qi-Xiu
Yu-Min Hu, Xian Gao
We investigate the parity-violating scalar-tensor theory and pay special attention to terms that are free of the Ostrogradsky ghost in the unitary gauge, i.e., when the scalar fiel…
gr-qc2024★ 10 cited
Spatially covariant gravity with nonmetricity
Yang Yu, Zheng Chen, Xian Gao
Scalar fields play an important role in constructing modified gravity theories. In the case of a single scalar field with timelike gradient, the corresponding Lagrangian in the uni…