Beyond Number of Bit Erasures: New Complexity Questions Raisedby Recently discovered thermodynamic costs of computation
Beyond Number of Bit Erasures: New Complexity Questions Raisedby Recently discovered thermodynamic costs of computation
复制标题
超越位擦除次数:最近发现的计算热力学成本提出的新复杂性问题
DOI:
10.1145/3232679.3232689
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Wolpert, David H.
中科院分区:
文献类型:
--
作者:
Grochow, Joshua A.;Wolpert, David H.
Recent advances in nonequilibrium statistical mechanics have led to a deeper understanding of the thermodynamic cost of computation than that put forth by Landauer and then studied extensively in the computational complexity community. In particular, Landauer's work led to a focus on the number of bit erasures in a computation, due to its relation to the change in entropy between input and output. However new advances in physics|which have been experimentally con rmed|mean we can now calculate additional thermodynamic costs beyond merely the change in entropy between input and output. As a consequence, we now understand that while logically reversible computing can have some thermodynamic bene ts, it is far from the end of the story. The purpose of this paper is to highlight new open questions in computational complexity raised by consideration of these new thermodynamic costs. Beyond leading to a revised viewpoint on the bene ts of logical reversibility, these questions touch on randomized algorithms, average-case complexity, the thermodynamic cost of error correcting codes, and noisy/inexact/approximate computation.
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发表时间:
1989
期刊:
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影响因子:
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