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摘要
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The tree-level string effective action is known to contain quartic Riemann terms with coefficient zeta(3)alpha '(3). In the case of the type II string this is the first alpha ' correction. We use the requirement that the action reduced on a d-torus should have an O(d, d) symmetry to find the B-field couplings up to fifth order in fields. The answer turns out to have a surprisingly intricate structure.
Keyword:
Bosonic Strings
String Duality
Superstrings and Heterotic Strings
期刊
IF:
5.5
论文数:
3.9W
被引数:
13.7W
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