简介:Inthiswork,webrieflydiscussanovelclassofmodifiedgravitylikef(T,TG)gravity.Inthisbackground,weassumethenewagegraphicversionofpilgrimdarkenergyandreconstructf(T,TG)modelsfortwospecificvaluesofs.Wealsodiscusstheequationofstateparameter,squaredspeedofsoundandwDE-wDEplaneforthesereconstructedf(T,TG)models.Theequationofstateparameterprovidesphantom-likebehavioroftheuniverse.ThewDE-wDEplanealsocorrespondstoΛCDMlimit,thawingandfreezingregionsforbothmodels.
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简介:ForagiventriangulationΔofaregionRofinterest,letS82(Δ):={s∈C2(R):s|1∈P8,l∈Δ}bethespaceofallsplinesofdegree8andsmoothness2,wheretdenotesanytriangleofΔandP8thespaceofpolynomialsoftotaldegree≤8.Furthermore,letS82(Δ):={s∈S83(Δ):s∈C3atv,v∈Δ}beasupersplinesubspaceofS82(Δ).WeconstruelacollectionoflocallysupportedsplinesinS82(Δ)whichcanbeusedtoachievelhefullapproximationorderofS82(Δ)anditscardinalilyislessthanthedi-mensionofsupersplinespacespaceS82(Δ).
简介:Quasiclassicaltrajectorycalculation(QCT)isusedfrequentlyforstudyingcollisionalenergytransferbetweenhighlyvibrationallyexcitedmoleculesandbathgases.Inthispaper,theQCToftheenergytransferbetweenhighlyvibrationallyexcitedC6F6andN2,O2andgroundstateC6F6wereperformed.TheresultsindicatethathighlyvibrationallyexcitedC6F6transferredvibrationalenergytovibrationaldistributionofN2,O2andgroundstateC6F6,sotheyareV-Venergytransfer.EspeciallyitismainlyV-VresonanceenergytransferbetweenexcitedC6F6andgroundstateC6F6,excitedC6F6transfersmorevibrationalenergytogroundstateC6F6thantoN2andO2.ThevaluesofQCT,-〈△Evib〉ofexcitedC6F6aresmallerthanthoseofexperiments.
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简介:Inthispaper,analmostP-stabletwo-stepsixth-orderHybridmethodwithphase-lagoforderinfinityandaclassexpliciteighth-orderObreckoffmethodswithphase-lagoforder10-24aredevelopedforthenumericalintegrationofthespecialsecond-orderperiodicinitial-valueproblems.Thesemethodshavetheadvantageofhigheralgebraicorderandconsiderablysmallerphase-tagcomparedwithsomemethodsin[1-6].Numericalexamplesindicatethatthesenewmethodsaremoreaccuratethanmethodsdevelopedby[1-6].
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简介:ConsideringthatKBe2BO3F2(KBBF)isanoutstandingdeepultravioletcrystalwhichcangeneratetheshortestwavelengthsinsecondharmonicgenerationandsum-frequencygeneration,wereportthedeterminationofthenonlinearopticalcoefficientsoftheKBBFcrystal.Thed11coefficientwasdeterminedtobe0.49pm/VbytheMakerfringesmethodatthewavelength1064nm,whichisinagreementwellwiththetheoreticalvalue.
简介:AmodelofcrosslinkerunbindingisimplementedinahighlycoarsegrainedgranularmodelofF-actincytoskeleton.WeemploythisspecificgranularmodeltostudythemechanismsofthecompressiveresponsesofF-actinnetworks.ItisfoundthatthecompressiveresponseofF-actincytoskeletonhasdependencyonthestrainrate.TheevolutionofdeformationenergyinthenetworkindicatesthatcrosslinkerunbindingeventscaninducetheremodellingofF-actincytoskeletoninresponsetoexternalloadings.TheinternalstressinF-actincytoskeletoncanefficientlydissipatewiththehelpofcrosslinkerunbinding,whichcouldleadtothespontaneousrelaxationoflivingcells.
简介:Westudytheconsistencyconditionsofthegeneralizedf(R)gravitybyextendingf(R)gravitywithnon-minimalcouplingtothegeneralizedf(R)witharbitrarygeometry-mattercoupling.Specifically,wediscussthetwoparticularmodelsofgeneralizedf(R)bymeansofconsistencyconditions.Itisfoundthatthesecondmodelisnotphysicallyviablesoastoberuledout.Moreover,wefurtherconstrainthefirstmodelusingtheDolgovKawasakistabilitycriterion,andgivethevaluerangesoftheparametersinthefirstmodel.Itisworthstressingthatourresultsincludetheonesinf(R)gravitywithnon-minimalcouplingasthespecialcaseofQ(L_m)=L_m.