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astro-ph2002★ 42 cited
Observational Consequences of Evolution of Primordial Fluctuations in Scalar-Tensor Cosmology
Ryo Nagata, Takeshi Chiba, Naoshi Sugiyama
Evolution of primordial fluctuations in a Brans-Dicke type scalar-tensor gravity theory is comprehensively investigated. The harmonic attractor model, in which the scalar field has…
astro-ph2002★ 257 cited
Tracking K-essence
Takeshi Chiba
We derive a condition for converging a common evolutionary track for k-essence (a scalar field dark energy with non-canonical kinetic terms). For the Lagrangian density V(phi)W(X)…