3 papers
astro-ph.CO2026
Gravitational waves from oscillons in a generalized exponential plateau potential
Peter Lott, Tuan Q. Do
We study oscillon formation and gravitational wave production in a generalized exponential plateau inflationary potential. Using Floquet analysis, we identify parametric instabilit…
gr-qc2026
Unstable de Sitter inflationary solution in sixth-order gravity
Tuan Q. Do
A sixth-order gravity, which involves not only two leading terms, and , but also quadratic curvature terms along with cubic curvature ones, wi…
gr-qc2025
On the stability of de Sitter inflationary solution in the Starobinsky-Bel-Robinson gravity
Tuan Q. Do
We will present the way to derive a de Sitter inflationary solution within the so-called Starobinsky-Bel-Robinson gravity. Then, we will show by using the dynamical system method w…