q-Virasoro algebra, q-conformal dimensions and free q-superstring

被引:9
作者
Chaichian, M
Presnajder, P
机构
[1] UNIV HELSINKI,HIGH ENERGY PHYS RES CTR,FIN-00014 HELSINKI,FINLAND
[2] COMENIUS UNIV BRATISLAVA,DEPT THEORET PHYS,SK-84215 BRATISLAVA,SLOVAKIA
关键词
quantum groups; q-Virasoro algebra; string theory; point-splitting regularization;
D O I
10.1016/S0550-3213(96)00568-8
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The commutators of standard Virasoro generators and fields generate various representations of the centreless Virasoro algebra depending on a conformal dimension J of the field in question (J is related to the Bargmann index of SU(1,1) generated by L(m), m = 0, +/- 1). We introduce the notion of q-conformal dimension for various oscillator realizations of q-deformed Virasoro (super)algebras proposed earlier, We use the field theoretical approach introduced recently in which the q-Virasoro currents L(alpha)(z) are expressed as Schwinger-like point-split normally ordered quadratic expressions in elementary fields, We extend this approach and probe the elementary fields A(z) (the q-superstring coordinate, momentum and fermionic field) and their powers by the q-Virasoro generators L(m)(alpha) (i.e. we calculate the commutators [L(m)(alpha), A(z)]) and show that to all of them can be assigned just the standard non-deformed conformal dimension.
引用
收藏
页码:466 / 478
页数:13
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