Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2010-05-07
Phys.Rev.D82:043509,2010
Physics
High Energy Physics
High Energy Physics - Theory
14 pages, 3 figures Slightly modified version to match the one will appear in Phys.Rev.D
Scientific paper
10.1103/PhysRevD.82.043509
Slow-roll inflation is studied in theories where the inflaton field is conformally coupled to the Ricci scalar. In particular, the case of Higgs field inflation in the context of the noncommutative spectral action is analyzed. It is shown that while the Higgs potential can lead to the slow-roll conditions being satisfied once the running of the self-coupling at two-loops is included, the constraints imposed from the CMB data make the predictions of such a scenario incompatible with the measured value of the top quark mass. We also analyze the role of an additional conformally coupled massless scalar field, which arises naturally in the context of noncommutative geometry, for inflationary scenarios.
Buck Michel
Fairbairn Malcolm
Sakellariadou Mairi
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