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1、OntologicalAspectsofQuantumFieldTheoryeditedbyMeinardKuhlmannHoIgerLyreAndrewWayneWorldScientificOntologicalAspectsofQuantumFieldTheoryThispageisintentionallyleftblankOntologicalAspectsofQuantumFieldTheoryeditedbyMeinardKuhlmannDepartmentofPhilosophy,UniversityofBremenHolgerLyrePhilosophyDepart
2、ment,UniversityofBonnAndrewWayneDepartmentofPhilosophy,ConcordiaUniversityVkS%WorldScientificwbNewNewJersey•London•SingaporeSine•HongKongPublishedbyWorldScientificPublishingCo.Pte.Ltd.POBox128,FarrerRoad,Singapore912805USAoffice:SuiteIB,1060MainStreet,RiverEdge,NJ07661UKoffice:57SheltonStreet,C
3、oventGarden,LondonWC2H9HEBritishLibraryCataloguing-in-PublicationDataAcataloguerecordforthisbookisavailablefromtheBritishLibrary.ONTOLOGICALASPECTSOFQUANTUMFIELDTHEORYCopyright©2002byWorldScientificPublishingCo.Pte.Ltd.Allrightsreserved.Thisbook,orpartsthereof,maynotbereproducedinanyformorbyany
4、means,electronicormechanical,includingphotocopying,recordingoranyinformationstorageandretrievalsystemnowknownortobeinvented,withoutwrittenpermissionfromthePublisher.Forphotocopyingofmaterialinthisvolume,pleasepayacopyingfeethroughtheCopyrightClearanceCenter,Inc.,222RosewoodDrive,Danvers,MA01923
5、,USA.Inthiscasepermissiontophotocopyisnotrequiredfromthepublisher.ISBN981-238-182-1Thisbookisprintedonacid-freepaper.PrintedinSingaporebyMainlandPressPrefaceQuantumfieldtheory(QFT)suppliestheframeworkformanyfundamentaltheoriesinmodernphysics.Overthelastfewyearstherehasbeenincreas•inginterestino
6、ntologicalaspectsofthesetheories,thatis,ininvestigatingwhatthesubatomicworldmightbelikeifQFTsweretrue.Isthisaworldpopulatedbylocalizableparticles?Orisitbestunderstoodascomposedofinteractingprocesses?Howshouldweinterpretcertainnon-gauge-invariantstructuresinQFTssuchasghostfieldsandantifields?Ess
7、aysinthisvol•umeinvestigateontologicalaspectsofQFTsusingavarietyofphysicalandphilosophicalconceptsandmethods.Althoughthefocusisontology,theseinvestigationstouchonabroadrangeoftopics,fromthemostgeneralques•tionsofmetaphysicstothemo