'!' BC p~ "' BOC.TRtING~HQCCEUIENNGHIEPVA D~ mtfdNGB6I HOC TONGBOP m-AMI m6 BDad a NGIm ETh'E -===================================~======== Ng1V"bv1Jn ~9 n , ' ." "" OAe EQ( J)OI DG IHONGmm GUIi MO.R(8G onA If mtJIi~ mtfdHG L~G flf !rQntit 1* an Pho" !rUn 81 Khoa h9c ToSn Ji ~ 1y th~et -I:a hitu 10201 c.1l1V"&n Dganh V~t !DImrPROBOem IE ~ """"-""""'::."""'" ' : " , "', J ,'\ ',0', 1:.1 i'i:~L I ~i "~'li'\"~:'~"" - 1966 """"-~~" , , "t., ' ': i' , " -,1 t j t:l)\} , I hJ 'h::hL,;,: " f :.' "-.'t, ~ I ~ ~ , ~ cq hoc Ul,am ~ B~.an V&tJi Ji thwet trim ~ ihoa T&t 1i -~ h9O ~6Ds h~ ~~ ~ IDl\IDg ~C11 phS Jib , h~~ - Chi - KiDh - dAn s If~1n 11690Glao - Giao 811I PhO.tUn sl DucmgTan P1d - G18.o all It TUn , Ng\fO'i nhen xet 11 u~ ,~en xet as , CO' qUBn nhen xet, L$ n mc hW t(l1 ,," an se ~ ~ vao hbi bao vi tid gOi d:~ng chlIm 1$ ¥ h9c ~Ang h9$>T.P JIb Chi nga;y thq nibn 1989 - Co 121' t1m hiAu lu'n Tang hC1.P~~ 'gia a , - 8n Nha J4iI1h an tCl-i !lhll vien 'lrIICIng d:~ h9c phS gb Ch! I[~ va t~ ']hit vi~n Q~c fIij fJlu lincm doi ~ khcug ihc,i glan can ~n nhat Qua 1; thUY6t tI'lZCmgluvng t& tU'C'ngdot t{nh la nhoa Poincare" Doi me; Poincare xu§:t phat t~ quan ni~m v~t ly cho rlng khong , ", , thai gian cua ly thuygt tuong do1 hiP la dang nhEt va d~ hll6ng, vi vb cae d~c trtmg e~h~ lll9'llg t~ khong dU?c tbay d~l tlnh ti~ bo~c quay h~ t9a dQ ichong then gia.'1 "" lfuo~ P01ncace co 10 tham so, cae vi t~ Qua no la ceo tOaD tu - xung l~g Pp.va 4-j;enXO'1110 men xung luvng ~;"V Nhom conformal , " Ie Mom ' ioincare d01 Dmg ch~a Mom nhu mQt Mom h"homconformal la nhom co 15 tham 80, cac " "'" , vi ill cua no bao gam 10 vi tll cua MOil poincare V8 ngoa1 ", C9J1 co vi tll D wong "" ung vc11 phep bien - ~ , d01 co den tO8 d9 T8 KjA tlJ\;1ng ling vai phep blin d~1 conformal die trllllg Nhoc conformal Is nhom r~ nhSt g1lt ~t bi en hinh non anh sang G:i.~ thUt ~t bien conformal ngb1~m :tEh1 Xf hptolD-had1"Onpbi ido r§ng nhom d01 ntng c, neng luvng cao d~c -'.- - Uu xk1 dl1 Ii ;; Xh1o at blim thvc lup 81eU kbong glan bar80111e Va t1'llCmgg1a1 t:Ccb cu8 nm)1Iitac gi8 (;olperin OgievetvA cOns 8¥ - blM tbiic lufn c!1tVCtbw nhin 18 raOta day-c a~ "'~cblt Chi nb't cac li thu;ret sleu dol xUng';' r§.t:g cbUa 481=g SU(2) JIbe, hlnb tbde lufn ~;rtcac bn>ermul'tiplet cU: s1eu dO1 JJ chzqe 110 1; bO1 cac s1€u tralmg tU1 t:Coh - cie 8ieu truang kboag bt rUg ~Qc d01 bb1 cae di'u klin hincbe cO t:Cnh ch!t ap dlt Do do.' vcn eac sUu tr~g' gial ticb co tb' 8P dpg phuong pbap Jibu steu tm~g tAng ,.tr1nh , phuO'Ag phap II Jt cae bieu I- dien cam 8inh cas Maclcey, Salam de L a , III II' ao dtnb quy lut~ bi.u do! cna toen hr tmcmg doi YC1 cae , !It_" , phep billU.l 401 cua ahom confer_l II A - ~O auperooafo~, 1IItOa ~omu 1a 0- ahOa 00a1'01"881 oa- cia- DI too thimll do1 & kla ~ ~ T1 ~ 8p1AO' ta pb8t t1tb yao 481 a8 "" ooafo1'1l812 n tw fI.c'" mOtvi tll vo haons cae hi tl m bop YJ _0 tJtb cf41 84 8UpU'OOllfOr8alII ap1DG'S~ JJI/ trinh -7 Cb U sIiu WI XIfBGJ! ROBO d:r YCh~I ' ~.~ (2f - 1.- C"'Q nhna at an ~ "Zm'Ia' ~ ' JIbc)a aia do1 DD8 -~ *'., t nnh bay acbuung I la 110'*g aptDCt be Dltft cua nhOm 461 " II'" *'.6' mag Po1ncar ~ &91 Dbo 40 18 81eu 481 11 (I ki h1.jQ 86 1a; spina) cO thi r9ag at cao Dho 81eu clSl ~g all; Jl vi tu &pUla (Ii> 1) ]flu 117 »ft tg sp1Da @ 18 bilu d11a fXI8b c~ clSI xUng t1"ODgSU(]I) ta 00 cfel s4 81811 , *' ~ '~ *' dot XIIIIg110'rOag t hVJ»IIOt each kb&tg tIa thl8mB dol ~ khong thCtt g!.8D va 4ft =a hong Sf (]f) ~ 'fruimg h9P 40'!1 paD JIbI t oua 818u QU~D1Dg , rOD& 18 trWl1g h9P steu cI41 Dug wb rpng kIt hgp Wi Qfi3 Q':j /3 } ~ ) ) j l Qed' ~/'=' )~ ~ -Ii hqp co 21 ~i~ ~ecp Z, (II.1) 2ieU e ~;S 1l', (11.2) j 2~1 (vf~- - ~ en.) bch