Skip navigation.

Institute for the Physics and Mathematics of the UniverseWPI

IPMU seminar

Date: December 18, 2008, 13:30 - 14:30 (with first 20 min. for introduction)
Place: Seminar Room at IPMU Prefab. B, Kashiwa Campus of the University of Tokyo
Speaker: Kazunori Kohri (Lancaster)
Title: Big-bang nucleosyntheis and a hint to solve problems in astrophysics, cosmology and particle physics. [PDF]
Abstract: Big-bang nucleosyntheis is a theory to predict light element abundances produced in the early universe. Recently severe discrepancies of the cosmic lithium abundance between theory and observations have been reported, which would be called "Lithium problem". I will discuss the current status of the Lithium problem and some hints to solve the problem in the framework of particle physics and cosmology in which long-lived supersymmetirc particles may be suggested. I will also mention those particles' effects on another topics in astrophysics and cosmology such as the positron excess, the EGRET gamma-ray anomaly and so on. I will reivew the standard big-bang nucleosyngthesis and cosmology for the first 20 minutes of my talk.