Details

Autor(en) / Beteiligte

• Cho, Inyong
• Kim, Hyeong-Chan
• Moon, Taeyoon

Titel

Precursor of inflation

Ist Teil von

• Physical review letters, 2013-08, Vol.111 (7), p.071301-071301, Article 071301

Ort / Verlag

United States

Erscheinungsjahr

2013

Link zum Volltext

Quelle

PROLA - Physical Review Online Archive

Beschreibungen/Notizen

• We investigate a nonsingular initial state of the Universe which leads to inflation naturally. The model is described by a scalar field with a quadratic potential in Eddington-inspired Born-Infeld gravity. The curvature of this initial state is given by the mass scale of the scalar field, which is much smaller than the Planck scale. Therefore, in this model, quantum gravity is not necessary in understanding this preinflationary stage, no matter how large the energy density becomes. The initial state in this model evolves eventually to a long inflationary period which is similar to the usual chaotic inflation.