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Particle physics models of inflation
D H Lyth
Inflation models are compared with observation on the assumption that the curvature perturbation is generated from the vacuum fluctuation of the inflaton field. The focus is on sin…
Leptogenesis and tensor polarisation from a gravitational Chern-Simons term
David H. Lyth, Carlos Quimbay, Yeinzon Rodriguez
Within an effective field theory derived from string theory, the universal axion has to be coupled to the the gravitational Chern-Simons (gCS) term. During any era when the axion f…
Which is the best inflation model?
David H. Lyth
Reasonable-looking models of inflation are compared, taking into account the possibility that the curvature perturbation might originate from some "curvaton" field different from t…
Can the curvaton paradigm accommodate a low inflation scale?
David H. Lyth
The cosmological curvature perturbation may be generated when some `curvaton' field, different from the inflaton, oscillates in a background of unperturbed radiation. In its simple…