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gr-qc2025
Inflaton Dynamics in Higher-Derivative Scalar-Tensor Theories of Gravity
Sam E. Brady, Katy Clough, Pau Figueras +1
During inflation, higher derivative terms in the gravitational action may play a significant role. Building on new stable formulations of four-derivative scalar-tensor theories, we…
hep-th2025★ 3 cited
Stable non-linear evolution in regularised higher derivative effective field theories
Pau Figueras, Áron D. Kovács, Shunhui Yao
We study properties of a recently proposed regularisation scheme to formulate the initial value problem for general (relativistic) effective field theories (EFTs) with arbitrary hi…