20821.desitter時(shí)空中的相對(duì)論氣味

1、分類號(hào)0412學(xué)校代碼10542密級(jí)學(xué)號(hào)201202110923deSitter日i空中的相對(duì)論氣體RelativisticgasindeSitterspacetime研究生姓名張沖指導(dǎo)教師姓名、職稱荊繼良教授學(xué)科專業(yè)天體物理研究方向引力理論湖南師范大學(xué)學(xué)位評(píng)定委員會(huì)辦公室二O一五年三月II碩士學(xué)位論文02英文摘要ABSTRACTRelativisticgasisanoldtopic，itisusedinplasmaphysics，as

2、trophysicsandcosmologyAfterthemodelofMarleforthecollisionoperatoroftheBoltzmannequationWasbuilt，moreandmorepaperswerepublishedbyscientistsTherelativisticBoltzmannequationWasdiscussed，F(xiàn)irst，theBoltzmannequationWasbuiltint

3、heconditionofrelativistic，thenwestudytherelativisticgasoftheBoltzmannequationindeSitterspacetimeItisusetheChapman—EnskogmethodthatthenonequilibriumcountastheMaxwell—JiittnerdistributionfunctionandthedeviationoftheMaxwell

4、Jiittnerdistributionfunctionwecangettheparticlefourflow，theenergy—momentumtensor，particlenumberdensityandenergyperparticleThenwegetthecoefficientsofthermalconductivityandviscositiesThereasonforourspecialattentiontodeSitt

5、erspacetimestemsfromthefactthatdeSitterspacetimeistheuniquemaximallysymmetriccurvedspacetimeItenjoysthesamedegreeofsymmetryasMinkowskispacetime(tenKillingvectors)Besides，thecurrentobservations，togetherwiththetheoryofinfl

6、ation，suggestthatouruniversemayhaveapproacheddeSittergeometriesinthefarpastandmayapproachdeSittergeometriesinthefarfutureWestudytherelativisticgasindeSitterspacetimebyusingthemodelofMarleWefindthatthemomentumbalanceequat

7、ionisaffectedbythegravitationalfield，andinthenon—relativisticregimeitreducestotheusualexpressionofNewton：SsecondlawWenotethatthecoefficientsofthermalconductivityandviscositiesdependonthegravitationalfield，andtheyincrease

8、asthegravitationalbecomesstrongerWealsoshowthat，apartfromthetemperaturegradient，theFourier’Slawhastwelativisticterms，oneduestotheinertiaoftheenergywhiletheotherisrela土edtothecosmica】constantKeywords：relativisticgas，deSit