BPS Saturated Amplitudes and Non-perturbative String Theory
P. Vanhove
TL;DR
This paper investigates specific F^4 and R^4 terms in string theory effective actions, providing insights into D-brane calculus and instanton contributions, including a detailed discussion on D-instantons.
Contribution
It offers new analysis of non-perturbative effects in string theory, focusing on D-brane and instanton contributions to effective actions.
Findings
Clarifies the role of F^4 and R^4 terms in non-perturbative string effects
Provides detailed treatment of D-instanton contributions
Enhances understanding of instanton counting in string theory
Abstract
The study of the special F^4 and R^4 in the effective action for the Spin(32)/Z_2 and type II strings sheds some light on D-brane calculus and on instanton contribution counting. The D-instanton case is discussed separately.
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