Inflaton potential reconstruction without slow roll

被引:30
作者
Grivell, LJ [1 ]
Liddle, AR [1 ]
机构
[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Astrophys Grp, Prince Consort Rd, London SW7 2BZ, England
关键词
D O I
10.1103/PhysRevD.61.081301
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We describe a method of obtaining the inflationary potential from observations which does not use the slow-roll approximation. Rather, the microwave anisotropy spectrum is obtained directly from a parametrized potential numerically, with no approximation beyond linear perturbation theory. This permits an unbiased estimation of the parameters describing the potential, as well as providing the full error covariance matrix. We illustrate the typical uncertainties obtained using the Fisher information matrix technique, studying the lambda phi(4) potential in detail as a concrete example.
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页数:5
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