Theoretical Physics Group
Theoretical Physics Group
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理论物理组
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
Walter Troost
中科院分区：
文献类型：
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作者：
A. Sevrin;Walter Troost
对于sl（2）在（超）李代数中的任何非平凡嵌入，可以将Virasoro代数的扩张相关联。我们实现了扩展Virasoro代数的WZW模型中的手征，可解群的规范，规范群被确定的sl（2）嵌入。由此产生的BRST上同调的计算和扩展Virasoro代数的字段内容的确定。证明了扩展Virasoro代数的闭包。应用，如量子三浦变换和相关的扩展引力理论的有效作用进行了讨论。这项工作部分得到了美国能源部高能物理司高能与核物理办公室能源研究办公室主任的支持，合同号为DE-AC 03 - 76 SF 00098，部分得到了美国国家科学基金会的资助，资助号为PHY 90 -21139。1993年10月1日以后的地址：CERN，TH Division，CH-1211 Genève，Switzerland Bevoegdverklaard Navorser NFWO，Belgium
To any non-trivial embedding of sl(2) in a (super) Lie algebra, one can associate an extension of the Virasoro algebra. We realize the extended Virasoro algebra in terms of a WZW model in which a chiral, solvable group is gauged, the gauge group being determined by the sl(2) embedding. The resulting BRST cohomology is computed and the field content of the extended Virasoro algebra is determined. The closure of the extended Virasoro algebra is shown. Applications such as the quantum Miura transformation and the effective action of the associated extended gravity theory are discussed. This work was supported in part by the Director, Office of Energy Research, Office of High Energy and Nuclear Physics, Division of High Energy Physics of the U.S. Department of Energy under Contract DE-AC03-76SF00098 and in part by the National Science Foundation under grant PHY90-21139. Address after October 1st, 1993: CERN, TH Division, CH-1211 Genève, Switzerland Bevoegdverklaard Navorser NFWO,Belgium