10 citations · 21 across the 3 of their papers we have counts for
5 papers · 1 filter
Supersymmetric Inflation of Dynamical Origin
K. Hamaguchi, K. -I. Izawa, H. Nakajima
Dynamical models of inflation are given with composite inflatons by means of massive supersymmetric gauge theory. Nearly flat directions and stable massive ones in the potential ar…
Supersymmetric Tuned Inflation
K. -I. Izawa, Y. Shinbara
We address an issue what kind of tuning realizes a flat potential for inflaton in supergravity. We restrict ourselves to the case that inflationary dynamics is not affected by sepa…
Marginally Eternal Inflation
K. -I. Izawa
We examine the amount of parameter tuning to make slow-roll inflation marginally eternal by considering an R-invariant chaotic inflation as an example of one-parameter tuning in su…
Quintessential Vanishing of the Cosmological Constant
K. -I. Izawa
We consider an effective field theory description of gravity coupled to a scalar field with volume-preserving diffeomorphism and Weyl invariances. The smallness of the cosmological…
Primary Inflation
K. -I. Izawa
We consider an inflationary universe scenario with multiple stages of inflation. The primary inflation, which may start at the Planck epoch, is followed by secondary inflations, wh…