2 papers
gr-qc2025
The Possibility of Formation of Compact Boson Stars via Cosmological Evolution of a Background Scalar Field
Yu Miyauchi, Takahiro Tanaka
Boson stars, hypothetical astrophysical objects bound by the self-gravity of a scalar field, have been widely studied as a type of exotic compact object that is horizonless and pro…
gr-qc2024
g formalism
Takahiro Tanaka, Yuko Urakawa
The formalism has been the major computational tool to study the superhorizon evolution of the scalar type perturbation sourced by scalar fields. Recently, this formalism was…