Does Nobel laureate Saul Perlmutter support the Multiverse hypothesis?

[Suekdccia]

In this video () physicist Brian Greene interviews Nobel laureate Saul Perlmutter about several topics in cosmology. At minute 1:12:22 Greene asks Perlmutter about whether he considers that the world is described by mathematics or the world *is* mathematics. Perlmutter seems to answer that he considers that reality itself is made of abstract mathematical structures or concepts.

This is much in line with Max Tegmark's thoughts about the Universe being itself mathematics and that all mathematically possible structures exist as different universes (https://arxiv.org/pdf/0704.0646.pdf).

If anyone has read anything about Perlmutter thoughts on this or if anyone has had the opportunity of working/conversing with Perlmutter, does anyone know if Perlmutter supports Tegmark's hypothesis of all mathematically possible structures existing as different universes?

 

[jedishrfu]

I suspect Perlmutter hasn't gone that far. I found this review of Max Tegmark's popular book on the subject that draws some comparisons between them:

https://www.nature.com/articles/505024a

but not enough to say how similar their views are. I think Tegmark is far more out there in this regard and Perlmutter is more conservative like most physicists.