I recommend Permutation City. https://www.amazon.com/Permutation-City-Greg-Egan-ebook/dp/B...

Alas no. I read a range of sci-fi but am not aware of other authors who write such amazing speculative fiction. He really takes sci-fi ideas to unpredictable yet believable conclusions. It is real hard sci-fi.

If you do discover similar authors, please let me know.

Recommended reading:

All his short stories are amazing. I'd highly recommend them:

http://www.amazon.com/Luminous-Greg-Egan-ebook/dp/B00E84BABW

http://www.amazon.com/Axiomatic-Greg-Egan-ebook/dp/B00FDWOBZ...

Some of his novels are hit and miss, but certainly worth checking out. This is probably my favourite:

http://www.amazon.com/Permutation-City-Greg-Egan-ebook/dp/B0...

Permutation City[1] by Greg Egan is one particular (hard SF) look at this idea.

I'm pretty sure there are others, it's quite a common trope.

In the (hopefully) real world, there was something fairly recently about possible violations of the Planck length: http://www.sciencedaily.com/releases/2011/06/110630111540.ht... (news wrapper around http://arxiv.org/abs/1106.1068 )

[1] http://www.amazon.com/Permutation-City-Greg-Egan/dp/00610548...