پديد آورنده :
اشرفي، مريم
عنوان :
بررسي نظريه ي ميدان همديس با تراز انرژي صحيح
گرايش تحصيلي :
ذرات بنيادي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده فيزيك
صفحه شمار :
ح، [100]ص.: مصور
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
فرهنگ لران
استاد مشاور :
محمد مهدي شيخ جباري
توصيفگر ها :
همديس دوبعدي , همديس ميدان هاي اوليه , ترازهاي انرژي صحيح
استاد داور :
داور داخلي: كيوان آقابابايي ساماني استاد مدعو: وحيد كريمي پور، سامان مقيمي عراقي
تاريخ ورود اطلاعات :
1395/08/29
كد ايرانداك :
ID949 دكتري
چكيده انگليسي :
abstractIn this thesis we focus on the partition function of two dimensional conformal field theory Frominvariance of partition function under T transformation we conclude that every state have integerspin and the difference between the left and the right central charges are integer multiple of 24 Byusing the T invariance of partition function in theories with real partition function we show that thetheory is parity even In prior research using the S invariance of partition function in the canonical ensemble an upperbound on the lowest primary field is obtained In order to improve the upper bound we study mediumtemperature expansion in grand canonical ensemble For an arbitrary order of derivatives we showthat by increasing the order of derivatives the better upper bound can be obtained moreover the orderof derivatives can not be an arbitrary number We obtain the optimal values of the order of derivativeswhich leads to the best upper bound We also study the theories with chiral algebra Using the medium temperature expansion in different manner we show that corresponding to Sinvariance non chiral partition function there exists a chiral S invariance function Then we focuson special class of CFT whose primary operators have half integer scaling dimension We show thatthe left and the right central charges are integer multiple of 4 We obtain the basis for the partitionfunction and corresponding chiral function Finally we study the partition function of CFT corresponding to the pure gravity with negativecosmological constant Using the pure gravity in Chern Simons approach it is shown that the dualCFT is extremal and the partition function is holomorphicly factorizable Focusing on the holomoor phicaly factorizable partition function we show that the weight of primary fields are integer and theleft and the right central charges are integer multiple of 8 Using the relation between the centralcharges and the Chern Simons coupling we show that the gauge group of Chern Simons theory isSO 2 1 SO 2 1 and its three fold cover In order to obtain the partition function dual to thepure gravity we introduce the Heck operator Using the expansion of partition function in terms ofgeneralized Heck operator we show that micro canonical entropy is equal to Bekenstein Hawkingentropy plus its logarithmic corrections Keywords Particle Accelerators Black hole Event Horizon Geodesic Particle Critical Particles Effective Po tential
استاد راهنما :
فرهنگ لران
استاد مشاور :
محمد مهدي شيخ جباري
استاد داور :
داور داخلي: كيوان آقابابايي ساماني استاد مدعو: وحيد كريمي پور، سامان مقيمي عراقي
