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Copernicus Webinar and Colloquium Series

9 July 2020 to 31 January 2025
Europe/Zurich timezone

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Dear colleagues,
 
We would like to invite you to take part in the upcoming 166th Copernicus Webinar.
 
Time:               9th April, Tuesday, at 5pm CEST (11 pm Beijing, 0 am JST on 10th April, 11 am EDT, 8 am in Tempe). 
 
Speaker:          Damien A. Easson (Arizona State University)
 
Title: Eternal Inflation and a Geodesically Complete Multiverse 
 
Abstract: I will discuss the possibility of an eternal universe, a universe with no first moment and no end. The talk will focus on eternal inflation and the key role that inflation plays in resolving cosmological singularities. I will describe how proposed no-go theorems, such as the famous theorem of Borde, Guth and Vilenkin (BGV) are circumvented or obviated. Our exploration encompasses eternal inflating, loitering, and bouncing models, shedding light on the critical aspects that underpin geodesic completeness and the constraints energy conditions in General Relativity impose on such spacetimes. Ignoring the intractable subtleties introduced by quantum considerations, such as rare tunneling events and Boltzmann brains, we will argue that the universe need not have a beginning or an end.
 
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Meeting ID: 421 480 1692
Passcode: cosmology
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Starts
Ends
Europe/Zurich

This series is co-organised by the cosmology groups in the following institutions (in alphabetical order): 

Harvard University, Hong Kong University of Science and Technology, Institut d'Astrophysique de Paris, Institute of Physics of the Czech Academy of Science, Jagiellonian University, Kyoto University, Leiden University, Ludwig Maximilians University, McGill University, Perimeter Institute, Polish Society on Relativity, The Pennsylvania State University, The University of Tokyo, Tsinghua University, University of Geneva, University of Groningen, University of Science and Technology of China, University of Waterloo.

Science Organising Committee members (in alphabetical order):

Niayesh Afshordi, Robert Brandenberger, Yifu Cai, Xingang Chen, Ema Dimastrogiovanni, Ruth Durrer, Ghazal Geshnizjani, Chunshan Lin, Jerome Martin, Jakub Mielczarek, Viatcheslav Mukhanov, Shinji Mukohyama, Subodh Patil, Misao Sasaki, Sarah Shandera, Wei Song, Alexander Vikman, Yi Wang, Zhong-Zhi Xianyu

 
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