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9 July 2020 to 31 December 2021
Europe/Zurich timezone

What the Hubble tension really is and how (not) to solve it

13 Apr 2021, 15:00
1h

Speaker

Dr Sunny Vagnozzi (Cambridge University)

Description

Despite being arguably one of the hottest topics in the recent literature, there are several widely spread misconceptions concerning what the Hubble tension really is. Moreover, leaving these misconceptions aside, no compelling model to solve the Hubble tension has been found so far, despite a huge number of attempts (and false alarms). I will begin by explaining what the Hubble tension really is, presenting three different interpretations in order of increasing "correctness". I will then discuss why so many proposed models have failed so far, and what in my opinion is the way forward towards constructing a realistic solution to the tension. I will close by presenting the "10 commandments" which I believe every "Hubble hunter" should abide by.

Presentation materials