D-instanton and polyinstanton effects from type I' D0-brane loops
Artikel i vetenskaplig tidskrift, 2010
We study non-perturbative D(-1)-instanton corrections to quartic gauge and curvature couplings in 8d type IIB orientifolds, in terms of a one-loop computation of BPS D0-branes in T-dual type I' models. The complete perturbative and non-perturbative results are determined by the BPS multiplicities of perturbative open strings and D0-brane bound states in the 9d type I' theory. Its modular properties admit a geometric interpretation by lifting to Horava-Witten theory. We use the type I' viewpoint to motivate an interpretation of 8d and 4d polyinstanton effects, consistent with heterotic - type II orientifold duality.
threshold corrections
couplings
6 dimensions
d-brane instantons
string theory
dynamics
D-branes
String Duality
duality
compactifications
Nonperturbative Effects
n=2
orientifolds
Författare
Christoffer Petersson
Chalmers, Teknisk fysik, Matematisk fysik
P. Soler
Universidad Autonoma de Madrid (UAM)
A. M. Uranga
CERN
Universidad Autonoma de Madrid (UAM)
Journal of High Energy Physics
1126-6708 (ISSN) 1029-8479 (eISSN)
Vol. 2010 6 089Ämneskategorier
Fysik
DOI
10.1007/JHEP06(2010)089