Browsing by Subject "Cosmological perturbation theory"

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The effects of the small-scale behaviour of dark matter power spectrum on CMB spectral distortion

Sarkar, A; Sethi, S. K; Das, Subinoy (IOP Publishing, 2017-07)

After numerous astronomical and experimental searches, the precise particle nature of dark matter is still unknown. The standard Weakly Interacting Massive Particle(WIMP) dark matter, despite successfully explaining the ...
Reheating in tachyonic inflationary models: Effects on the large scale curvature perturbations

Jain, R. K; Pravabati, C; Sriramkumar, L (Elsevier B.V., 2011-11)

We investigate the problem of perturbative reheating and its effects on the evolution of the curvature perturbations in tachyonic inflationary models. We derive the equations governing the evolution of the scalar perturbations ...

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