"Virasoro algebra"의 두 판 사이의 차이

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13번째 줄: 13번째 줄:
 
*  They are classified by c>1 and c<1 case.<br>
 
*  They are classified by c>1 and c<1 case.<br>
 
** c<1 case = discrete representations
 
** c<1 case = discrete representations
**  
+
** Kac determinant formula
  
 
 
 
 
40번째 줄: 40번째 줄:
 
** Haihong Hu
 
** Haihong Hu
 
* http://ko.wikipedia.org/wiki/
 
* http://ko.wikipedia.org/wiki/
* http://en.wikipedia.org/wiki/
+
* http://en.wikipedia.org/wiki/V
 
* http://front.math.ucdavis.edu/search?a=&t=&c=&n=40&s=Listings&q=
 
* http://front.math.ucdavis.edu/search?a=&t=&c=&n=40&s=Listings&q=
 
* http://www.ams.org/mathscinet/search/publications.html?pg4=AUCN&s4=&co4=AND&pg5=TI&s5=&co5=AND&pg6=PC&s6=&co6=AND&pg7=ALLF&co7=AND&Submit=Search&dr=all&yrop=eq&arg3=&yearRangeFirst=&yearRangeSecond=&pg8=ET&s8=All&s7=
 
* http://www.ams.org/mathscinet/search/publications.html?pg4=AUCN&s4=&co4=AND&pg5=TI&s5=&co5=AND&pg6=PC&s6=&co6=AND&pg7=ALLF&co7=AND&Submit=Search&dr=all&yrop=eq&arg3=&yearRangeFirst=&yearRangeSecond=&pg8=ET&s8=All&s7=
 
* 다음백과사전 http://enc.daum.net/dic100/search.do?q=<br>
 
* 다음백과사전 http://enc.daum.net/dic100/search.do?q=<br>

2009년 7월 27일 (월) 19:16 판

Unitarity and Ghost
  • Unitarity means  the inner product in the space of states is positive definite
  • A state with negative norm is called a ghost.
  • If a ghost is found on any level the represetation cannot occur in a unitary theory

 

 

unitary representations
  • They are classified by c>1 and c<1 case.
    • c<1 case = discrete representations
    • Kac determinant formula

 

 

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