[chr1]

Lee Smolins book "einstein's unfinished revolution" is a fairly accessible, and all of his papers are on arxiv, e.g. https://arxiv.org/pdf/1902.05108.pdf

Stephen Wolfram has an interesting blog post which is somewhat related https://blog.stephenwolfram.com/2015/12/what-is-spacetime-re...

't Hoofts book about celular automata interpretation is free at https://www.springer.com/gp/book/9783319412849

There are several theories predicting collapse of wavefunction which would prevent quantum computers e.g. https://en.wikipedia.org/wiki/Penrose_interpretation