資源描述：
《Condensed matter and AdS CFT》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、CondensedmatterandAdS/CFTSubirSachdevLecturesatthe5thAegeansummerschool,“Fromgravitytothermalgaugethe-ories:theAdS/CFTcorrespondence”,Adamas,MilosIsland,Greece,September21-26,2009,andtheDeSitterLectureSeriesinTheoreticalPhysics2009,UniversityofGroningen,
2、November16-20,2009.AbstractIreviewtwoclassesofstrongcouplingproblemsincondensedmatterphysics,anddescribeinsightsgainedbyapplicationoftheAdS/CFTcorrespon-dence.The?rstclassconcernsnon-zerotemperaturedynamicsandtransportinthevicinityofquantumcriticalpoints
3、describedbyrelativistic?eldtheories.Ide-scribehowrelativisticstructuresariseinmodelsofphysicalinterest,presentre-sultsfortheirquantumcriticalcrossoverfunctionsandmagneto-thermoelectrichy-drodynamics.Thesecondclassconcernssymmetrybreakingtransitionsoftwo-
4、dimensionalsystemsinthepresenceofgaplesselectronicexcitationsatisolatedpointsoralonglines(i.e.Fermisurfaces)intheBrillouinzone.Idescribethescal-ingstructureofarecenttheoryoftheIsing-nematictransitioninmetals,anddiscussitspossibleconnectiontotheoriesofFer
5、misurfacesobtainedfromsimpleAdSdu-arXiv:1002.2947v1[hep-th]16Feb2010als.SubirSachdevDepartmentofPhysics,HarvardUniversity,CambridgeMA02138,e-mail:sachdev@physics.harvard.edu12SubirSachdev1IntroductionThepastcoupleofdecadeshaveseenvigoroustheoreticalactiv
6、ityonthequantumphasesandphasetransitionsofcorrelatedelectronsystemsintwospatialdimen-sions.Muchofthisworkhasbeenmotivatedbythecupratesuperconductors,butthelistofinterestingmaterialscontinuestoincreaseunabated[1].Methodsfrom?eldtheoryhavehadastrongimpacto
7、nmuchofthiswork.In-deed,theyhavebecomepartofthestandardtoolkitofcondensedmatterphysicists.Intheselectures,Ifocusontwoclassesofstrong-couplingproblemswhichhavenotyieldedaccuratesolutionsviatheusualarsenalof?eld-theoreticmethods.IwillalsodiscusshowtheAdS/C
8、FTcorrespondence,discoveredbystringtheorists,hasalreadyallowedsubstantialprogressonsomeoftheseproblems,andoffersencour-agingprospectsforfutureprogress.The?rstclassofstrong-couplingproblemsareassociatedwiththereal-time,?-ni
