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D$^{6}$ℛ$^{4}$ amplitudes in various dimensions
Four-graviton couplings in the low energy effective action of type II string vacua compactified on tori are strongly constrained by supersymmetry and U-duality. While the $R^4$ and $D^4 R^4$ couplings are known exactly in terms of Langlands-Eisenstein series of the U-duality group, the $D^6 R^4$ cou...
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| Lenguaje: | eng |
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2015
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| Acceso en línea: | https://dx.doi.org/10.1007/JHEP04(2015)057 http://cds.cern.ch/record/1989347 |