A note on the structural stability of tachyonic inflation

Details A note on the structural stability of tachyonic inflation A note on the structural stability of tachyonic inflation

2004-02-13

arxiv.org/abs/gr-qc/0402060v2

Mod.Phys.Lett. A19 (2004) 927-930

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

5 pages, typos corrected and references added, matches version to appear in MPLA

Scientific paper

10.1142/S021773230401391X

We study the structural stability of tachyonic inflation against changes in the shape of the potential. Following Lidsey (Gen. Rel. Grav. 25 (1993) 399), the concepts of rigidity and fragility are defined through a condition on the functional form of the Hubble factor. We find that the models are rigid in the sense that the attractor solutions never change as long as the conditions for inflation are met.

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