[Fis] Physics of computing

2012-03-14 Thread John Collier 


Dear folks,
This is a further article demonstrating that information is physical. It
is nice to be getting some empirical results.

http://www.nature.com/news/the-unavoidable-cost-of-computation-revealed-1.10186?WT.ec_id=NEWS-20120313

The previous article, which I mentioned on this list, is Toyabe, S.,
Sagawa, T., Ueda, M., Muneyuki, E.  Sano, M. Nature Phys. 6, 988–992
(2010). It demonstrated that information could be converted to energy,
which I consider a no brainer on first principles, but many people have
been sceptical.
The new article is Bérut, A. et al. Nature 483, 187–189 (2012).

John





Professor John
Collier
colli...@ukzn.ac.za
Philosophy and Ethics, University of KwaZulu-Natal, Durban 4041 South
Africa
T: +27 (31) 260 3248 / 260 2292 F:
+27 (31) 260 3031



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[Fis] Physics of Computing

2012-03-14 Thread Kevin Clark 
Thank you John for your update (FIS Digest 559, Issue 4) on the cost of 
computation. It's good to see experimental verification of Landauer's 
Principle. For those FISers interested in related topics on Landauer's 
Principle, you might also read:

1) Clark, K.B. (2010). Bose-Einstein condensates form in heuristics learned by 
ciliates deciding to signal 'social' commitments. BioSystems, 99(3), 167-178. 
http://www.ncbi.nlm.nih.gov/pubmed/19883726

2) Clark, K.B. (2010). Arrhenius-kinetics evidence for quantum tunneling in 
microbial social decision rates. Communicative  Integtrative Biology, 3(6), 
540-544. http://www.landesbioscience.com/journals/cib/article/12842

Best regards,

Kevin Clark
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