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==== Quantum Zeno effect ==== {{Main article|Quantum Zeno effect}} In 1977,<ref>{{Cite journal |bibcode=1977JMP....18..756M |last1=Sudarshan |first1=E. C. G. |author-link=E. C. G. Sudarshan |last2=Misra |first2=B. |title=The Zeno's paradox in quantum theory |journal=Journal of Mathematical Physics |volume=18 |issue=4 |pages=756β763 |year=1977 |doi=10.1063/1.523304 |osti=7342282 |url=http://repository.ias.ac.in/51139/1/211-pub.pdf |access-date=2018-04-20 |archive-date=2013-05-14 |archive-url=https://web.archive.org/web/20130514062722/http://repository.ias.ac.in/51139/1/211-pub.pdf |url-status=live }}</ref> physicists [[E. C. George Sudarshan]] and B. Misra discovered that the dynamical evolution ([[motion]]) of a [[quantum system]] can be hindered (or even inhibited) through [[observation]] of the [[system]].<ref name="u0">{{cite journal |url=http://www.boulder.nist.gov/timefreq/general/pdf/858.pdf |author1=W.M.Itano |author2=D.J. Heinsen |author3=J.J. Bokkinger |author4=D.J. Wineland |title=Quantum Zeno effect |journal=[[Physical Review A]] |volume=41 |issue=5 |pages=2295β2300 |year=1990 |doi=10.1103/PhysRevA.41.2295 |pmid=9903355 |bibcode=1990PhRvA..41.2295I |access-date=2004-07-23 |archive-url=https://web.archive.org/web/20040720153510/http://www.boulder.nist.gov/timefreq/general/pdf/858.pdf |archive-date=2004-07-20 |url-status=dead }} </ref> This effect is usually called the "[[Quantum Zeno effect]]" as it is strongly reminiscent of Zeno's arrow paradox. This effect was first theorized in 1958.<ref>{{Cite journal |last=Khalfin |first=L.A. |journal=Soviet Phys. JETP |volume=6 |page=1053 |year=1958 |bibcode = 1958JETP....6.1053K |title=Contribution to the Decay Theory of a Quasi-Stationary State }}</ref>
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