Protected couplings and BPS dyons in half-maximal supersymmetric string vacua
We analyze four- and six-derivative couplings in the low energy effective action of D=3 string vacua with half-maximal supersymmetry. In analogy with an earlier proposal for the (∇Φ)4 coupling, we propose that the ∇2(∇Φ)4 coupling is given exactly by a manifestly U-duality invariant genus-two modula...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2017-02-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269316307730 |