天文学系
站内检索
Recent Work on Galactic Dynamics
Superconducting Detectors for Millimeter/Submillimeter Astronomy
Direct collision of white dwarfs as a major channel for type Ia supernovae explosions
西藏阿里CMB项目
Transfer function of thin accretion disks
Pulsar timing and its application in fundamental gravitational physics
Exoplanet Research With Big Eyes
Black Holes Big and Small: Impact on Galaxy Evolution
Unraveling Mysteries of the Milky Way
Relativity in Fundamental Astronomy: introduction and progress
More系所链接
    您现在的位置:首页>学术活动>学术报告

    Loop quantum cosmology and alternatives to inflation

     

    报告人:Dr. Edward Wilson-Ewing (Albert-Einstein-Institut Max-Planck-Institut fuer Gravitationsphysik)

     

    时间:2016年4月20日下午4:00

    地点:东区理化大楼18层天文台报告厅

     

    报告摘要: High precision observations of the cosmic microwave background provide strong constraints on the dynamics of the early universe and raise the hope that it may be possible to detect quantum gravity effects. In this talk, I will focus on realizations of the ekpyrotic and matter bounce scenarios in loop quantum cosmology. These are alternatives to inflation where scale-invariant perturbations are generated in a contracting background Friedmann space-time which later bounces due to loop quantum cosmology effects. I will also discuss how loop quantum cosmology can affect observational quantities; one such effect is a damping of the amplitude of tensor modes.


     
    欲浏览最佳效果 建议使用IE6.0版本以上的浏览器 1024x768以上分辨率
    版权所有:中国科学技术大学物理学院天文学系