Dualities and the SL(2,Z) anomaly

Dualities and the SL(2,Z) anomaly
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对偶性和 SL(2,Z) 异常

DOI:
10.1088/1126-6708/1998/12/006
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发表时间:
1998
期刊:
影响因子:
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通讯作者:
S. Mukhi
S. Mukhi
中科院分区:
--
文献类型:
--
作者:
S. Mukhi

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最近导出的SL(2,Z)异常IIB型超引力在10维被证明是一个后果的T-对偶与IIA型弦,紧化后的2维的8倍。这就解释了在IIA型和IIB型弦理论的有效作用量中,不同背景下出现的引力8-形式的同一性。在这个框架中,紧化流形上的约束来自于2d理论的模不变性。在6维的相关问题进行检查,并认为,类似的异常存在于世界卷的M理论5膜和orientifold 5平面。
The SL(2,Z) anomaly recently derived for type IIB supergravity in 10 dimensions is shown to be a consequence of T-duality with the type IIA string, after compactification to 2 dimensions on an 8-fold. This explains the identity of the gravitational 8-forms appearing in different contexts in the effective actions of type IIA and IIB string theories. In this framework, constraints on the compactification manifold arise from modular invariance of the 2d theory. Related issues in 6 dimensions are examined, and it is argued that similar anomalies are present on the worldvolumes of M-theory 5-branes and orientifold 5-planes.