Tag: Parallel Universes

Cosmologists’ problems with alephnull and the multiverse
This is another insight from Brian Greene’s book The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos – well worth reading. Alephnull () is the order (size) of the set of countably infinite objects. The counting numbers are the obvious example: one can start from one and keep on going. But any…

The Copernican principle and the multiverse
Thinking about this leaves my mind in a bit of a twist, but it is worth exploring. I am still reading Brian Greene’s The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos: a great book (just enough maths in the footnotes to make me feel I haven’t completely lost touch yet with…

A question for a cosmologist about brane death
The “string theory revolution” began in 1984 and I graduated with my astrophysics degree in 1987, perhaps unsurprisingly, having been taught nothing about it at all. But now, reading The Hidden Reality: Parallel Universes and the Deep Laws of the Cosmos, (a good book) I discover that we may all be living on a brane…