; TeX output 1996.03.25:22208p 5N cmbx12Titleofmanuscript:>Forcelinebreakswith2!", cmsy10nnK`y cmr10A.UUA.AuthorandB.B.Author^ O!cmsy7 } rLinesUUbreakautomaticallyorcanbGeforcedwith !", cmsy10nn 3j cmti9AÎuthors'N'ExXthatanewparagraphbGegins.Thewidth-changingcommandsonlytakee ectingal-leyzstyle(thedefaultstyle).6PreprintstylegivesoutputofUUaconstantwidth.This lemaybGeruninbothpreprintandgalleystyles.PreprinttformatisusedforsubmissionpurpGoses.^GalleyformatUUisusedinproGductiontoproduce naloutput.WhenRcommandsarereferredtointhisexample le,they(arealways(shownwiththeirmandatoryarguments,usingOHnormalTU>'ExXformat._Inthisformat,#1,#2,etc.stand!)formandatoryauthor-suppliedargumentstocom-mands.IF*or̀example,*Kin\section{#1}the#1standsforvthetextoftheauthor'ssectionheading,andin\title{#1}UUthe#1standsforthetitleofthepapGer.n1*8pReference citationsintextusethecommand \cite{#1}.s#1UmaycontainlettersandnumbGers.sInthereferencesectionofthispapGereachreferenceis\tagged"bythe\bibitem{#1}command.#1shouldbGe!': cmti10identic}'alin$0bGothcommands.YTheproperformforcitingintextiso\cite{#1},+uandtheresultisshownhere[1,2].W*ewilljciteotherpGeople[1,3]andjournalshere.W*ealsocitehotherpGeopleagain(Refs.[1]and[3]).kItisworthmentioningxthatREVTU>'ExX\collapses"listsofreferencenumbGersqwherepossible.W*enowciteeveryonetogether[1{3],UUandonceagain(Refs.[1{3]).When qtheprboptionisused, thecommand\onlinecite{#1}pwillputthereferencecitationson-line.It wasusedintheprecedingparagraph.NotethattheloGcationxofcitationsmustbeadjustedtothereferencestyle:thesupGerscriptreferencesinprbstylemustap-pGearafterpunctuation;otherstylesmustappGearbeforeanypunctuation.Thissamplewaswrittenfortheregu-larB.(non-prb)citationstyle,Fbutinvokingtheprboptionwillcshowtheresultsofthecommand\onlinecite{#1}inUUtheprecedingparagraph.!% IKI.DISPLAYEDEQUATIONS9|A.Anothersecond-levCelheading;M1.@Third-levelN'ExXtherearemanydi er-entKwaystodisplayequations,andafewpreferredwaysareUUnotedbGelow.qDisplayedUUmathwillcenterbydefault.a.\F;ourth-levelE7he}'ading:r>Single-lineequations. Belowwe3havesingle-lineequationswithnumbGers;thisisthemostUUcommontypGeofequationinPhysic}'alReview:q΍ b> cmmi10+(p)p<J UN[k2j#"V cmbx10pj(jpj8+p 0ercmmi7z)]1=2C^u cmex10 ˍ"$jpj+pz !px+ipyHy^T;`}(2.1)-q1^131 4234567890abc123 z  8`1234556 O1Pލ 8a% 8bOfeT (֍ pAr2֟^W:`|(2.2)NoteUUtheopGenoneinEq.(2.2).NotRallnumbGeredRequationswill twithinanarrowcolumntthisway*.8%ThetequationnumbGertwillmovetdownautomaticallyGifitcannot tonthesamelinewithaone-lineUUequation:3䍟D^yEab12345678abc123456abcdef z  8`1234556 O1Pލ 8a% 8bOfeT (֍ pAr2֟^:`|(2.3)When97the\label{#1}commandisused[cf.hhinputforEq.#f(2.2)],7thej/equationcanbGereferredtointextwithoutn2 @8pyourgknowingtheequationnumbGerthatTU>'ExXwillassign toDit.3Justuse\ref{#1},where#1isthesamenamethatyouUUusedinthe\label{#1}command.TheA\FLAand\FRcommandswillsetdisplayedAmath ushleftand ushright,,respGectively*.?Justinsertthe\FLor\FRcommandbGeforethedisplayedmathbGegins.F*orUUexample,hereisanequation ushedleft:Rō^nab12345678bcdef z  8`1234556 O1Pލ 8a% 8bOfeT (֍ pAr2֟^᜵:`|(2.4)ḍY*ouUUshouldn'tneed\FLand\FRveryoften.If`ayouhaveasingle-lineequationthatyoudon'twantnumbGered,UUyoucanusethen[,n]format:鍐g[ٟ+ig[ٟ+ !ӷg[ٟ+g[ٟ+g[ٟ+g[ٟ+:::\G;dvq[ٟ+q[ٟ+!ӷq[ٟ+g[ٟ+g[ٟ+:::\G:)'<2.@MultilineN(Q2|s)UUNn2 (N2n81):e Z0 @ jX t >i(Q2|s)UUNn2 (N2n81)=|Z0 @ jX t >i'ExX;ttherefore,youmustknowthenum-bGer2aheadoftime,9andmust%makesurethatthenumbGern3_8psetwith\eqnum{#1}staysinstepwiththeautomatic numbGering.`\eqnum{#1} workswithbGothsingle-lineandmultilineVequations.uuY*oucould,Vifyouwished,VdoallthenumbGeringUUinapapermanuallywith\eqnum{#1}.Enclosing ?single-lineandmultilineequationsin\begin{mathletters}qand\end{mathletters}willproGduceasetofequationsthatare\numbered"withlet-ters,UUasshowninEqs.(2.7a)and(2.7b)bGelow:⍍^|abc123456abcdef z  8`1234556 O1Pލ 8a% 8bOfeT (֍ pAr2֟^;`|(2.7a)"M=(0ig[ٱ2፴Zp[(4E1|sE2)1=2 ʲ(l2`2፴iӲ)1 t(g[ٴe2 j)22Ik(p2)(0[iTL]1 j1(p1|s):B(2.7b)͍ Ifyouusea\label{#1}commandrightafterthe\begin{mathletters},zthen\ref{#1}canbGeusedtoreferencealltheequationsinamathlettersenvironment.F*orY=example,Z8theequationsintheprecedingmathlettersenvironmentUUwereEqs.(2.7).!OD53.@WideNr8QeKKD 6cosmW ^^<$4ײ[3|s]1(wfe9;ӟ (֍Q:2l12 Ƹ8M:2bW =̗1S82+<$xc[2|s]1lwfe9;ӟ (֍Q:2l13 ƸM:2bW ==13|s^Pҵ:`}(2.9).#LIKII.CRCOSS-REFERENCINGREVTU>'ExXKwillautomaticallynumbGerKsections,yequa-tions,$ gure@captions,andtables.cInordertoreferencethemjintext,Jusethe\label{#1}and\ref{#1}com-mands.Ther\label{#1}commandappGearsfollowingasectionheading;Xwithinanequation;orwithina gureorta-bleyeenvironment,jinsideoforfollowingthecaption.The\ref{#1}wcommandappGearsintextwherecitationistooGccur.ٕW*ewwillrefertothe rst gure(Fig.1)here.W*ecanUUrefertothe\late gure"also(Fig.2).Referencesto gures:DFig.1, ~Fig.2,Fig.3,andFig.4.Referencestotables:uT*ableI,9TableIGI,9TableIGII,9TableIV,UUT*ableV,andTableVI.Physic}'alReview{(stylerequiresthattheinitialcitationof guresortablesbGeinnumericalorderintext,sodon'tciteZFig.3untilyou'vecitedFig.2.SeeStyleandNota-tionGuide.n4,8p-8ACCKNOWLEDGMENTSW*e#wishtoacknowledge#thesuppGortoftheauthor community5xinusingREVTU>'ExX,mo eringsuggestionsandencouragement,UUtestingnewversions,:::UQ.IfzasectiondoGesnothavezanumberz(liketheAcknowl-edgmentssection), usetheso-called\starversion"ofthecommand.Thatis,VinsertastarbGetweenthecommandand:itsarguments:F\section*{#1},s\subsection*{#1},etc.F*orϢtheAcknowledgmentsϢsectionyoucanalsousethe+command\acknowledgmentstoproGducethehead-ing.!%TAPPENDIXA:APPENDIXEST*ovstarttheappGendixes,`youshouldusethe\appendixcommand.{8ThisX{signalsthatallfollowingsectioncom-mandsarefertoappGendixesinsteadofregularsections.Therefore,the\appendixcommandshouldbGeusedonlyonce|to#setupthesectioncommandstoactasap-pGendixes.0Thereafternormalsectioncommandsareused.ThenvheadingforasectioncanbGeleftempty*.$Fornvexample,\appendix\section{}willD proGduceanappendixheadingthatsays\APPENDIXA"UUand\appendix\section{Background}willD proGduceanappendixheadingthatsays\APPENDIXA:r8pNotestheequationnumbGerssinthisappendix,produced withUUthemathlettersenvironment:^IյEZ=mc;B(B2a)nGdEZ=mc2|s;ʄ (B2b)GEpZ>JZ ۵mc3|s:ˠ}(B2c)DTheyUUturnouttobGeEqs.(B2a),(B2b),and(B2c).fff4#n6-=q% cmsy6 ÊAlsoTatPh9ysicsDepartment,XYZUniversity:. [1] ÊA.TSmithandB.DoAe,J.Chem.Ph9ys.76,4056(1982).[2] ÊC.TJones,J.Chem.Ph9ys.68,5298(1978).[3] ÊC.SJonesandA.Smith,cdJ.Chem.Ph9ys.72,3416(1980); Ê73,T5168(1980);72,4009(1980).)^ ?FIG.g1.A gurecaption.7The gurecaptionsareautomat-icallyTn9umbAered.M ?FIG.%-2.]TheG\late gure."HThis gurew9asinsertedwhenthepapAerw9as nished.Sincethe guresareautomaticallyn9umbAered,Q^no)renumbering)intextw9asnecessary:.AllthatneededtobAedonew9astotypAethecaptionintheproperplaceandTcitethe gureintext., ?FIG.f3.8A gure 0caption.=FigureswillbAereducedtoanappropriateTsizeb9ytheproAductionsta uponreceipt.B ?FIG.(4.d0A gurecaption.ThelabAelsy9ougivetablesand gurescanbAedescriptiv9e(asthatofFig.1,"whichhasanlabelfautonumg)ortheycanre ecttheirn9umericalorder,asTthatofthis gure(nlabelffig4g).n ?T:ABLE)I.eOThisdpisanarro9wtable,7whichoAccupiesthewidth&ofanarro9wcolumn.PThetablecaptionsareautomati-callyIn9umbAered.Thistableshowsleft-aligned,Vcentered,andrigh9t-alignedPcolumns.ItalsoshowsoneoftwopAossiblemeth-oAds1(ofsettingtablenotes(footnoteswithintables).oInthistable6thetablenotesaren9umbAered6andsetautomatically:. 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