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Showing 1996 · astro-phShow all
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astro-ph1996★ 13 cited
Dynamics of Quiet Universes
Hiraku Mutoh, Toshinari Hirai, Kei-ichi Maeda
We study the stability of a contracting {\it silent universe}, which is a spacetime with irrotational dust and vanishing magnetic part of the Weyl tensor, . Two general r…
astro-ph1996★ 24 cited
Late-Time Mild Inflation --- a possible solution of dilemma: cosmic age and the Hubble parameter ---
Takeshi Fukuyama, Mikiko Hatakeyama, Masae Miyoshi +2
We explore the cosmological model in which a late-time mild inflation is realized after the star formation epoch. Non-vanishing curvature coupling of a classical boson field yields…
astro-ph1996★ 1 cited
Fluctuations of the Gravitational Constant Induced by Primordial Bubbles
Nobuyuki Sakai
We consider the classical fluctuations of the gravitational constant generated by bubbles in the inflationary universe. For extended inflation, we demonstrate numerically how and h…