純態(tài)的微分幾何結(jié)構(gòu).pdf

1、|_IX。亳分類號(hào)ij“單誣代碼：。首0186辭硫g，都斯k：，一q～≥譽(yù)菱、、J、：f，≯。，y，荔麓；、’妒疊鬈、一，z≈，，‘。。譬t譬、蘺燙；’^i。。_，、、薯氣，、鼉≤：曩一：t、、譽(yù)!冬≮，；≮，‘、《參r≮。。j囊i|t、：，f‘：k』，，5；，。，～。、t一、q、_＼靖。一滲≯》◇一r^，警，，、、二。；飛o。，＼t1’，一∥，。#～t、?！?，_：，≮簟。，誓。、，∥≯。～，。、淹一，j，r～。；0。譬、0，冬，，。純

2、態(tài)的微分幾何結(jié)構(gòu)ABSTRACTThesetD1(7／)ofpurestatesisthefoundationofstudyingthespaceD(n)ofdensitystatesThispaperstudyssomeproblemsaboutpurestatesD1(“)indensitystatesD(74)fromthegeometricpointofviewWegivetheRemannianmetricgofthepure

3、statesD1(丸)asasubmanifoldofnⅢ)，definetheHermitianstructurenfcomplexmanif()ldD1(列)byg，andfindthathandtheFubini—studymetriconthecomplexprojectivespacesdifferbyaconstantmultipleItisoneofveryimportantproblemstoeffectivelydec

4、idewhetheragivencompositestateisentangledornotInthispaper，thelengthofapurestate0ncompositequantumsystemsisdefined，anditcanbeusedasameasurementoftheentanglementWealsogiveanecessaryandsufficientconditiontodecidewhetheragiv