On general flux backgrounds with localized sources

TL;DR

This paper derives new consistency conditions for string compactifications involving fluxes and localized sources, highlighting their interconnectedness via dualities and M-theory, and discusses implications for stability and effective theories.

Contribution

It introduces novel consistency constraints for flux compactifications with localized sources, unifying them through string dualities and M-theory insights.

Findings

New stability conditions identified

Constraints relate fluxes and sources via dualities

Implications for effective action consistency

Abstract

We derive new consistency conditions for string compactifications with generic fluxes (RR, NSNS, geometrical) and localized sources (D-branes, NS-branes, KK-monopoles). The constraints are all related by string dualities and share a common origin in M-theory. We also find new sources of instabilities. We discuss the importance of these conditions for the consistency of the effective action and for the study of interpolating solutions between vacua.