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5 papers · 2 filters
Inflation in string theory: a graceful exit to the real world
Michele Cicoli, Anupam Mazumdar
The most important criteria for a successful inflation are to explain the observed temperature anisotropy in the cosmic microwave background radiation, and exiting inflation in a v…
Reheating for Closed String Inflation
Michele Cicoli, Anupam Mazumdar
We point out some of the outstanding challenges for embedding inflationary cosmology within string theory studying the process of reheating for models where the inflaton is a close…
Towards a Resolution of the Cosmological Singularity in Non-local Higher Derivative Theories of Gravity
Tirthabir Biswas, Tomi Koivisto, Anupam Mazumdar
One of the greatest problems of standard cosmology is the Big Bang singularity. Previously it has been shown that non-local ghostfree higher-derivative modifications of Einstein gr…
Wiggles in the cosmic microwave background radiation: echoes from non-singular cyclic-inflation
Tirthabir Biswas, Anupam Mazumdar, Arman Shafieloo
In this paper we consider a unique model of inflation where the universe undergoes rapid asymmetric oscillations, each cycle lasting millions of Planck time. Over many-many cycles…
Reheating in Inflationary Cosmology: Theory and Applications
Rouzbeh Allahverdi, Robert Brandenberger, Francis-Yan Cyr-Racine +1
Reheating is an important part of inflationary cosmology. It describes the production of Standard Matter particles after the phase of accelerated expansion. We give a review of the…