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Rational conformal field theory extensions of W1+infinity in terms of bilocal fields

机译:W1 +无穷大的有理共形场理论在双局部场方面的扩展

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The rational conformal field theory extensions of W1+infinity at c = 1 are in one-to-one correspondence with one-dimensional integral lattices L(m). Each extension is associated with a pair of oppositely charged "vertex operators'' of charge square m is an element of N. Their product defines a bilocal field V-m (z(1), z(2)) whose expansion in powers of z(12) = z(1) - z(2) gives rise to a series of (neutral) local quasiprimary fields V-l(z, m) (of dimension l + 1). The associated bilocal exponential of a normalized current generates the W1 + infinity algebra spanned by the V-l (z, 1) (and the unit operator). The extension of this construction to higher (integer) values of the central charge c is also considered. Applications to a quantum Hall system require computing characters (i. e., chiral partition functions) depending not just on the modular parameter tau, but also on a chemical potential zeta. We compute such a zeta dependence of orbifold characters, thus extending the range of applications of a recent study of affine orbifolds. (C) 1998 American Institute of Physics. [S0022-2488(98)01011-1]. [References: 25]
机译:在c = 1处W1 +无穷大的有理共形场理论扩展与一维积分格L(m)一一对应。每个扩展都与一对电荷平方m的带相反电荷的“顶点算子”相关联,m是N的元素。它们的乘积定义了一个双局部场Vm(z(1),z(2)),其z的幂次扩展12)= z(1)-z(2)产生一系列(中性的)局部拟原磁场Vl(z,m)(尺寸为l + 1),归一化电流的相关双局部指数生成W1 +由Vl(z,1)(和单位算子)构成的无穷大代数。还考虑了将此构造扩展到中心电荷c的更高(整数)值的方法。应用于量子霍尔系统需要计算字符(即,手性分配函数)不仅取决于模块参数tau,还取决于化学势zeta。我们计算出orbifold特征的这种zeta依赖性,从而扩展了最近仿射Orbifolds研究的应用范围(C)1998 American物理研究所。[S0022-2488(98)01011-1]。[参考:25]

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