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arXiv 1902.04201hep-th
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$S^6$上的阿贝尔M5-brane

Abelian M5-brane on $S^6$

Andreas Gustavsson

摘要:

研究了$S^6$上的阿贝尔M5膜.从频谱中,我们提取一系列的扩展的热核。特别是,我们确定的归一化系数$a$在M5膜共形异常。当我们将我们的结果与由$S^6$上的局部曲率不变量计算Hadamard-Minakshisundaram-DeWitt-Seeley系数得到的结果进行比较时,我们首先发现一个单位的不匹配。这种不匹配是由于一个零模式的过度计数。在减去这个贡献之后,我们最终达成一致。我们沿着一个奇异的圆纤维进行降维到五维,我们发现共形异常消失。

英文摘要:

We study the abelian M5 brane on $S^6$. From the spectrum we extract a series expansion for the heat kernel. In particular we determine the normalization for the coefficient $a$ in the M5 brane conformal anomaly. When we compare our result with what one gets by computing the Hadamard-Minakshisundaram-DeWitt-Seeley coefficients from local curvature invariants on $S^6$, we first find a mismatch of one unit. This mismatch is due to an overcounting of one zero mode. After subtracting this contribution, we finally find agreement. We perform dimensional reduction along a singular circle fiber to five dimensions where we find the conformal anomaly vanishes.

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