Journal
PHYSICAL REVIEW D
Volume 95, Issue 10, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.95.103503
Keywords
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Funding
- Lancaster-Manchester-Sheffield Consortium for Fundamental Physics under STFC [ST/L000520/1]
- STFC
- STFC [ST/J000418/1, ST/L000520/1, ST/P000800/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000520/1, ST/P000800/1, ST/J000418/1] Funding Source: researchfish
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A new model of thermal inflation is introduced, in which the mass of the thermal waterfall field is dependent on a light spectator scalar field. Using the delta N formalism, the end of inflation scenario is investigated in order to ascertain whether this model is able to produce the dominant contribution to the primordial curvature perturbation. A multitude of constraints are considered so as to explore the parameter space, with particular emphasis on key observational signatures. For natural values of the parameters, the model is found to yield a sharp prediction for the scalar spectral index and its running, well within the current observational bounds.
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