nature-quantum-subway

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1、Quantumfrontiers:Quantumbiologyphysicsworld.comNature’squantumsubwaysJimAl-KhalilidescribesthenewexperimentsandtheoriesexploringwhetherquantumtunnellingofhydrogencausesmutationsinourDNAShutterstock/Lonely42PhysicsWorldMarch2013physicsworld.comQuantumfrontiers:Quantumbiology“Someofusshouldventur

2、etoembarkonasynthe-hasaroletoplayinoneofthemostimportantpro-JimAl-Khaliliisasisoffactsandtheories,albeitwithsecondhandandcessesinmolecularbiology:DNAmutation.Hydro-theoreticalnuclearincompleteknowledgeofsomeofthem–andatthegenbondsarestrongerthanVanderWaalsforcesbutphysicistandholdsariskofmaking

3、foolsofourselves.”weakerthanionicandcovalentbonds,beingahappychairinpublicSosaidErwinSchrödingerin1943uponhisforaymediumthatholdcertainorganicmoleculestogether.engagementinfromquantumphysicsintogenetics.HewouldsoonCrucially,theyarestrongenoughtohelpbuildstablescienceattheUniversityofSurrey,back

4、upthesewordswithhishugelyinfluential1944structures,butnotsostrongthattheycannotbebro-UK.Heisalsoabook,WhatisLife?,inwhichhepredictedthatgeneticken,whichiswhythestructurescanberearrangedbroadcasterandinformationisstoredwithinanaperiodiccrystal–anintonewconfigurations.Thehydrogenbondisalsoauthorw

5、hoselatestideathatwouldbeconfirmedbyFrancisCrickandresponsibleforstabilizingproteinsandformodulat-bookisParadox:JamesWatsonlessthanadecadelaterwhentheyingthespeedandspecificityofchemicalreactions.theNineGreatestdiscoveredthestructureofthedoublehelix.Today,Inphysicalterms,thehydrogenbondcanbeEni

6、gmasinPhysicsasmallbutincreasingnumberofuswouldechodescribedasaprotontrappedinadouble,oftenpublishedbyBantamSchrödinger’ssentiments,eventhoughthecasehasasymmetric,finitepotentialwell.ThetwopotentialPress,e-mailyettobemadeconclusivelyforacausallinkbetweenminimaexistbecausetheprotonishappiestbein

7、gj.al-khalili@someoftheweirderaspectsofquantummechanicsclosetooneorotherofthetwoatomsateachendofsurrey.ac.ukandbiology.thebond,withanenergybarrierinthemiddle,whichItiscertainlytruethatalthoughmanyexamplestheprotoncanonlygetovercla