Loops in exceptional field theory
Loops in exceptional field theory
复制标题
例外场论中的循环
DOI:
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发表时间:
2015
期刊:
影响因子:
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通讯作者:
A. Kleinschmidt
中科院分区:
文献类型:
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作者:
G. Bossard;A. Kleinschmidt
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.
影响因子:
5.4
作者:
D. Berman;M. Perry
通讯作者:
D. Berman;M. Perry
影响因子:
5
作者:
Hohm, Olaf;Samtleben, Henning
通讯作者:
Samtleben, Henning