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1、北京大学物理学院SchoolofPhysics/PekingUniversity兰州重离子加速器国家实验室HIRFL/Lanzhou中国科学院理论物理研究所InstituteforTheor.Phys./AS孟杰JieMengTimereversalsymmetrybrokentriaxialrelativisticmeanfieldapproachformagneticmomentandnuclearcurrentinoddmassnucleiIntroductionTriaxialRMFwitht
2、ime-oddcomponentNumericaldetailsResultsanddiscussionSummaryContentsSingleparticleenergydensitydistributionMagneticmomentNuclearcurrentMagneticmomentsaremeasuredwithhighprecision.Traditionallyitprovidedasensitivetestfornuclearmodels.Becausethesingleparti
3、clestatecancoupletomorecomplicated2p-1hconfigurationsandtherearemesonsexchangecorrectionscausedbythenuclearmediumeffect,theconfigurationmixingprovideabetterfoundationtodescribetheobservedvalues.Themeanfieldmaynotbeexpectedtodescribethemagneticmomentwell
4、.IntroductionBlin-StoyleRJ1957TheoriesofNuclearMoments(Oxford:OxfordUniversityPress).WilkinsonDHandRhoM(Eds.)1979MesonsinNucleivolI1(Amsterdam:North-Holland).ArimaA1984Prog.Part.Nucl.Phys.1153ArimaAHorieH1954Prog.Theor.Phys.11509ArimaA,ShimizuK,BentzWan
5、dHyugaH1988Adu.Nucl.Phys.181.However,itshouldbeappropriatefortheisao-scalarmagneticmomentinLSclosedshellnucleiplusorminusonenucleon,asAlthoughrelativisticmeanfieldapproachhasachievedgreatsuccessduringthelasttwodecades:Straightforwardapplicationofthesing
6、le-particlerelativisticmodeldoesnotagreewiththeexperimentalmagneticmomentsSerot&Walecka,Adv.Nucl.Phys.16(86)1Reinhard,Rep.Prog.Phys.52(89)439Ring,Prog.Part.Nucl.Phys.37(96)193Meng,Toki,Zhou,Zhang,Long&Geng,Prog.Part.Nucl.Phys.2006,inpressLS-closure,nosp
7、in-orbitpartnersonbothsidesoftheFermisurface,thereforethemagneticmomentoperatorcannotcoupletomagneticresonance.Pion-exchangecurrentcontributionturnedtobeverysmalltoiso-scalarcurrent,aswellasothersprocesses.IntroductionTheSigmaandthetime-componentvectorm
8、esonsofOmegafailstoreproducethecorrespondingSchmidtvalues:Takingintoaccountthecontributionoftheback-flowtothecurrentoperatorcansolvethisproblem.Thisback-flowiscausedbythepolarizationofthecorebytheexternalparticle.H.Ohtsubo,et.al.
