1.
Phys Rev Lett
; 98(21): 211602, 2007 May 25.
Artigo
em Inglês
| MEDLINE
| ID: mdl-17677762
RESUMO
We find the D(-1)- and D1-brane instanton contributions to the hypermultiplet moduli space of type IIB string compactifications on Calabi-Yau threefolds. These combine with known perturbative and world sheet instanton corrections into a single modular invariant function that determines the hypermultiplet low-energy effective action.