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1、PARTICLEPHYSICSANDINFLATIONARYCOSMOLOGY1AndreiLindeDepartmentofPhysics,StanfordUniversity,StanfordCA94305-4060,USAarXiv:hep-th/0503203v126Mar20051ThisistheLaTeXversionofmybook“ParticlePhysicsandIn?ationaryCosmology”(Harwood,Chur,Switzerland,1990).viAbstractThisistheLaTeXversionofmybook“Part
2、iclePhysicsandIn?ationaryCosmology”(Harwood,Chur,Switzerland,1990).Idecidedtoputittohep-th,tomakeiteasilyavailable.Manythingshappenedduringthe15yearssincethetimewhenitwaswritten.Inparticular,wehavelearnedalotaboutthehightemperaturebehaviorintheelectroweaktheoryandaboutbaryogenesis.Adiscover
3、yoftheaccelerationoftheuniversehaschangedthewaywearethinkingabouttheproblemofthevacuumenergy:Insteadoftryingtoexplainwhyitiszero,wearetryingtounderstandwhyitisanomalouslysmall.Recentcosmologicalobservationshaveshownthattheuniverseis?at,oralmostexactly?at,andcon?rmedmanyotherpredictionsofin?
4、ationarytheory.Manynewversionsofthistheoryhavebeendeveloped,includinghybridin?ationandin?ationarymodelsbasedonstringtheory.Therewasasubstantialprogressinthetheoryofreheatingoftheuniverseafterin?ation,andinthetheoryofeternalin?ation.Itsclear,therefore,thatsomepartsofthebookshouldbeupdated,wh
5、ichImightdosometimesinthefuture.Ihope,however,thatthisbookmaybeofsomeinteresteveninitsoriginalform.Iamusingitinmylecturesonin?ationarycosmologyatStanford,supplementingitwiththediscussionofthesubjectsmentionedabove.IwouldsuggesttoreadthisbookinparallelwiththebookbyLiddleandLyth“CosmologicalI
6、n?ationandLargeScaleStructure,”withthebookbyMukhanov“PhysicalFoundationsofCosmology,”whichistobepublishedsoon,andwithmyreviewarticlehep-th/0503195,whichcontainsadiscussionofsome(butcertainlynotall)oftherecentdevelopmentsinin?ationarytheory.ContentsPrefacetotheSeriesxIntroductionxiCHAPTER1Ov
7、erviewofUni?edTheoriesofElementaryParticlesandtheIn?a-tionaryUniverseScenario11.1Thescalar?eldandspontaneoussymmetrybreaking11.2Phasetransitionsingaugetheories61.3Hotuniversetheory91.4SomepropertiesoftheFriedmannmodels131.5Problemsofthestandardscenario16
