14 citations · 14 across the 2 of their papers we have counts for
3 papers
gr-qc2026
Effective Field Theory for Freezing Gravity with Minimally Coupled Matter
Zhibang Yao
Freezing gravity (FG), a phantom-crossing dark energy model, was recently proposed in the absence of matter. In this work, we study FG minimally coupled to a perfect fluid through…
gr-qc2025★ 14 cited
A General Model for Dark Energy Crossing the Phantom Divide
Zhibang Yao, Gen Ye, Alessandra Silvestri
Within the framework of spatially covariant theories, we propose a general model for dark energy (DE) in which the cosmological background and perturbations are independently contr…
gr-qc2024
PPN meets EFT of dark energy: Post-Newtonian approximation in higher-order scalar-tensor theories
Jin Saito, Zhibang Yao, Tsutomu Kobayashi
We study the post-Newtonian limit of higher-order scalar-tensor theories that are degenerate in the unitary gauge. They can be conveniently described by the effective field theory…