Propagation-Based General Relativity

整理文档很辛苦,赏杯茶钱您下走!

免费阅读已结束,点击下载阅读编辑剩下 ...

阅读已结束,您可以下载文档离线阅读编辑

资源描述

arXiv:gr-qc/9601051v29Sep1996Propagation-BasedGeneralRelativityEdwardM.Schaefer∗PlanningSystemsInc.,7923JonesBranchDr.,McLean,VA22102(September6,1996)AbstractItisassumedthattheradialpropagationoflightwithrespecttothenaiveco-ordinatesystemoftheobserverisuniformandisotropicandthatthephysicalrateofpropagationoflightisthesameforallobservers.Inacceleratedframesofreference,theseassumptionsleadtothefindingsthatthemeasuredvalueofcisafunctionofthegravitationalenergyperunitmass(GEPUM)oftheobserver,andthatthisisduetothephysicalcharacteristicsofthestandardmeasuring-devicesbeingafunctionoftheirGEPUM.Theconsequencesofthesefindingsincludeobserverswhoatrestwithrespecttoeachotherassign-ingdifferentvaluestothesamephysicalseparation,themixedmetrictensorgμνdescribinghowgravitationaffectsmeasuring-devices,andtheDe-Brogliewavelengthbeingafunctionofanobject’sGEPUM.Howthemeasuredvaluesofvarioustypesofphysicalquantitiesareaffectedisdescribed.Thegravita-tionalDopplershiftingoflightisvieweddifferently.ThecorrectvalueforthedeflectionoflightisobtainedwithouttheuseofHuyghen’sPrinciple.TheSchwarzschildsolutionisre-examined:Thephysicalsizeofradialcoordinate2mis0,atravelermustperceivehimselftogoaninfinitedistancetoreachtheradialcoordinateof2m,andgravitationalself-potentialenergyreachesaminimalvalueattheradialcoordinate3m.Therefore,blackholesdonotex-istinthistheory;Gravitationalcollapseformshyper-massivestar-likeobjectsinstead.04.20.Cv,04.40.Dg,04.70.-s,98.62.Ai,98.63.JsTypesetusingREVTEX∗E-mail:schaefer@plansys.com1INTRODUCTIONThecornerstoneofthetheoriesofRelativityisthestatementthatthepropagationoflightisuniformandisotropicforallobservers.Theterm“uniform”usuallyreferstoEinstein’sassumptionthatallobserversmeasurethesamevalueforthespeedoflight(c)[1,2].Thisassertionisbasedontwoadditionalassumptions:•cisphysicallythesameforallobservers,whichwillbereferredtoasAbsoluteUnifor-mity.AbsoluteUniformityistheheartandsoulofRelativity,andisretainedinthetheoryproposedinthisarticle.•Allmeasuringdevicesofidenticalconstructionarephysicallyidentical.ThiswillbereferredtoasConstructionUniformity.InSpecialRelativity(SR),anotherformofuniformityinvolvingthepropagationoflightexists:Theradial1propagationoflightwithrespecttothenaivecoordinatesystemofeveryobserverisinstantaneouslythesamethroughouttheuniverse,wherethenaivecoordinatesystemisthatcreatedbytheobserverwhenitisassumedthatlighttravelsinstraightlines.ThiswillbereferredtoasExtendedUniformity.AlthoughExtendedUniformityandConstructionUniformitypeacefullyco-existinSR,thesamedoesnotapplytoGeneralRelativity(GR).Thisisbecausethecoordinatesizeofastandardmeasuring-rodandtherateatwhichastandardclockticksbothdecreaseastheirgravitationalenergyperunitmass(GEPUM)decreases.WhenAbsoluteUniformityandConstructionUniformityareassumed,itispredictedthattherateofpropagationoflightwithrespecttoanaivecoordinatesystemwillbediminishedasitdescendsintoagravitationalfield[2],therebyviolatingExtendedUniformity.Theresultingtheory,whichiscurrentlyaccepted,isreferredtointhisarticleasMeasurement-BasedGR(MGR).Ontheotherhand,whenExtendedUniformityisusedinsteadofConstructionUnifor-mity,theGReffectsonthecoordinatefeaturesofclocksandmeasuring-rodsproducethepredictionthatcincreasesasone’sGEPUMdecreases.IfAbsoluteUniformityisalsoas-sumed,thenitcannotbeachangeinthephysicalquantitywhichistherateofpropagationoflight(∗c)whichcausesthechangeinc.Instead,thephysicalattributesofthestandardsoflengthandtimemustnowbeafunctionoftheirGEPUMandnotsolelyafunctionoftheirconstruction.Inthisarticle,itisassumedthatAbsoluteUniformityandExtendedUniformityaretheunderlyingprinciplesonwhichtheuniverseoperates.ThetheoryconstructedonthesepostulatesisreferredtoasPropagation-basedGR(PGR).Inthistheory,physicalspace,time,mass,andchargeareasmeasuredwithrespecttothenaivecoordinatesystemofanobserverwithagivenGEPUM.Theresultingmodeloftheuniversemakesanumberofsur-prisingpredictions,includingafindingthatblackholescannotexist,andthatgravitationalcollapsehaltsitselfbeforeasingularitycanbeformed.1Thisqualifierisnotneededinflatspace-times.However,thedistortingeffectsofcurvedspace-timescanmaketherateoflateralpropagationoflightappeartobedifferentthanthatofitsradialpropagation.Theresultinglossofisotropywouldinvalidatetheresultingtheoryiftheselateraleffectsweretreatedasbeingphysicallyasperceived.2FUNDAMENTALSA.Quantities,Values,andEffectsGiventhelossofConstructionUniformity,howshouldstandardsofmeasurementbecreatedand/orreconciled?InPGR,thephysicalstandardscontinuetobedescribedbytheirconstructionbecause:•Wearephysicalbeingsandwhatweexperienceisaphysicalworld.Thephysicalstandardsthereforeshouldhelpaphysicalbeingtodescribethevariousphenomenaoftheuniverseasperceivedbyitself.•TheexistingtensorsofGRalreadyassumetheuseofmeasuring-deviceswhichareofidenticalconstruction,andpermitthemeasurementsmadewiththemindifferentframesofreferencetobereconciled.Togowithanothertypeofstandardwouldrequirethedevelopmentofanewmathematicalframeworktosupportit.Thephysicalsizeofthestandardmeasuring-devicesbeingafunctionoftheirGEPUMmeansthat

1 / 20
下载文档,编辑使用

©2015-2020 m.777doc.com 三七文档.

备案号:鲁ICP备2024069028号-1 客服联系 QQ:2149211541

×
保存成功