4–5 Mar 2025
RIKEN Wako Campus
Asia/Tokyo timezone

Reheating after Inflation: Characteristics and Constraints

4 Mar 2025, 15:00
1h
435-437 Meeting Room (RIKEN Wako Campus)

435-437 Meeting Room

RIKEN Wako Campus

RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198

Speaker

Dr Pankaj Saha (KEK)

Description

Reheating, the period following inflation, marks the transition where the inflaton decays, populating the early universe with matter and radiation.
This phase remains relatively unexplored due to the absence of direct observational evidence and the complex, non-linear dynamics involved.
This talk will examine the characteristics and constraints of the reheating phase.
As reheating typically unfolds in multiple stages, I will describe the general features of the stages, drawing on some results from lattice simulations.
I will describe how the reheating phase can be linked to Cosmic Microwave Background (CMB) observables via its Gravitational Waves signature,
Finally, I will show how even subtle features in the inflationary potential at very small scales can significantly alter the dynamics of reheating and its potential observable signatures.

Presentation materials

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