Benford's Law Detects Quantum Phase Transitions similarly as Earthquakes

Details Benford's Law Detects Quantum Phase Transitions similarly as Earthquakes Benford's Law Detects Quantum Phase Transitions similarly as Earthquakes

2011-03-28

arxiv.org/abs/1103.5398v2

Europhys. Lett. vol. 95, 50008 (2011)

Physics

Quantum Physics

v1: 3 pages, 2 figures; v2: 6 (+epsilon) epl pages, 5 figures, significant additions, previous results unchanged

Scientific paper

10.1209/0295-5075/95/50008

A century ago, it was predicted that the first significant digit appearing in a data would be nonuniformly distributed, with the number one appearing with the highest frequency. This law goes by the name of Benford's law. It holds for data ranging from infectious disease cases to national greenhouse gas emissions. Quantum phase transitions are cooperative phenomena where qualitative changes occur in many-body systems at zero temperature. We show that the century-old Benford's law can detect quantum phase transitions, much like it detects earthquakes. Therefore, being certainly of very different physical origins, seismic activity and quantum cooperative phenomena may be detected by similar methods. The result has immediate implications in precise measurements in experiments in general, and for realizable quantum computers in particular. It shows that estimation of the first significant digit of measured physical observables is enough to detect the presence of quantum phase transitions in macroscopic systems.

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