演講資訊

摘要：

Inflation as the physical process of Big Bang explains many properties of the observable universe, including the density fluctuations and the large-scale geometry. In the first part of the talk, I will discuss how measurements of the cosmic microwave background (CMB) constrain the shape and energy of inflationary potential, turning something that used to be completely unknowable into experimental physics. I will discuss the status of the South Pole-based BICEP experiment and its recent results that constrain the primordial gravitational waves. This direct measurement of inflationary energy scale rules out many once-promising inflationary models. Inflation also has an unfortunate tendency of making the universe boring. It wiped out everything - exotic particles, topological defects, etc. leaving little memory of the early universe. In the second part of the talk, I will discuss other research activities in the Stanford CMB group that could shed light on the physics of inflation through effects on particle dark matter.

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