Loops in exceptional field theory

Loops in exceptional field theory
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例外场论中的循环

DOI:
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发表时间:
2015
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影响因子:
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通讯作者:
A. Kleinschmidt
A. Kleinschmidt
中科院分区:
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作者:
G. Bossard;A. Kleinschmidt

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本文研究了D ≥ 4维例外场论中的某些四引力子振幅。由于该公式在U-对偶群E11−D左(mathbb{Z})下明显不变, 8)$$,我们得到的表达式可以用自守形式表示。在低能展开中,我们发现M-理论有效作用量R4、R4 R4和R6 R4中的自守系数函数项与弦理论的独立推导一致。这特别提供了一个精确的弦理论<$6R4阈值函数的显式积分公式。此外,我们展示了通常的超重力对数发散抵消了在充分的例外场论振幅,在适当定义的维正则化计划。我们还评论条款的高阶导数的顺序和可能的counterterms的部分约束的作用。
A bstractWe study certain four-graviton amplitudes in exceptional field theory in dimensions D ≥ 4 up to two loops. As the formulation is manifestly invariant under the U-duality group E11−Dℤ$$ {E}_{11-D}left(mathbb{Z} ight) $$, our resulting expressions can be expressed in terms of automorphic forms. In the low energy expansion, we find terms in the M-theory effective action of type R4, ∇4R4 and ∇6R4 with automorphic coefficient functions in agreement with independent derivations from string theory. This provides in particular an explicit integral formula for the exact string theory ∇6R4 threshold function. We exhibit moreover that the usual supergravity logarithmic divergences cancel out in the full exceptional field theory amplitude, within an appropriately defined dimensional regularisation scheme. We also comment on terms of higher derivative order and the role of the section constraint for possible counterterms.
DOI: 10.1007/jhep06(2011)074
发表时间: 2010-08
影响因子: 5.4
作者:
D. Berman;M. Perry
通讯作者: D. Berman;M. Perry
DOI: 10.1103/physrevd.90.066002
发表时间: 2014-09-04
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Hohm, Olaf;Samtleben, Henning
通讯作者: Samtleben, Henning