Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1993-03-22
Phys.Rev. D48 (1993) 2529-2547
Physics
High Energy Physics
High Energy Physics - Phenomenology
39 pages plus 2 figures (upon request:rocky@fnas01.fnal.gov), LaTeX, FNAL--PUB--93/029-A; SUSSEX-AST 93/3-1
Scientific paper
10.1103/PhysRevD.48.2529
Generalizing the original work by Hodges and Blumenthal, we outline a formalism which allows one, in principle, to reconstruct the potential of the inflaton field from knowledge of the tensor gravitational wave spectrum or the scalar density fluctuation spectrum, with special emphasis on the importance of the tensor spectrum. We provide some illustrative examples of such reconstruction. We then discuss in some detail the question of whether one can use real observations to carry out this procedure. We conclude that in practice, a full reconstruction of the functional form of the potential will not be possible within the foreseeable future. However, with a knowledge of the dark matter components, it should soon be possible to combine intermediate-scale data with measurements of large-scale cosmic microwave background anisotropies to yield useful information regarding the potential.
Copeland Edmund
Kolb Edward W.
Liddle Andrew R.
Lidsey James E.
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