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1、IntroductiontoQuantumFieldTheoryThispageintentionallyleftblankIntroductiontoQuantumFieldTheoryV.G.KiselevUniversityofFreiburg,GermanyYa.M.ShnirUniversityofCologne,GermanyA.Ya.TregubovichInstituteofPhysics,NationalAcademyofSciences,Minsk,BelarusEditedforEnglishbyM.J.LilleyandC.J.Houghton
2、CRCPRESSBocaRatonLondonNewYorkWashington,D.C.LibraryofCongressCataloging-in-PublicationDataCatalogrecordisavailablefromtheLibraryofCongressThisbookcontainsinformationobtainedfromauthenticandhighlyregardedsources.Reprintedmaterialisquotedwithpermission,andsourcesareindicated.Awidevariety
3、ofreferencesarelisted.Reasonableeffortshavebeenmadetopublishreliabledataandinfor-mation,buttheauthorandthepublishercannotassumeresponsibilityforthevalidityofallmaterialsorfortheconsequencesoftheiruse.Neitherthisbooknoranypartmaybereproducedortransmittedinanyformorbyanymeans,electronicor
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5、obtainedinwritingfromCRCPressLLCforsuchcopying.DirectallinquiriestoCRCPressLLC,2000N.W.CorporateBlvd.,BocaRaton,Florida33431.TrademarkNotice:Productorcorporatenamesmaybetrademarksorregisteredtrademarks,andareusedonlyforidentificationandexplanation,withoutintenttoinfringe.VisittheCRCWebs
6、iteatwww.crcpress.com©2000OPA(OverseasPublishersAssociation)N.V.NoclaimtooriginalU.S.GovernmentworksInternationalStandardBookNumber90-5699-327-6PrintedintheUnitedStatesofAmerica234567890Printedonacid-freepaperContents...PrefaceXII~ITHEPATHINTEGRALINQUANTUMMECHANICS11ActioninClassicalMec
7、hanics31.1TheVariationalPrincipleandEquationsofMotion...31.2AMathematicalNote:TheNotionoftheFunctional..61.3TheActionasaFunctionofTheBoundaryConditions.91.4SymmetriesoftheActionandConservationLaws....132ThePathIntegralinQuantumMechanics172.1TheGreenFunctionoftheSchrodingerEquat
