Moduli Instability in Warped Compactification

TL;DR

This paper derives four-dimensional effective theories from ten-dimensional IIB supergravity with warped compactification, revealing a broader solution space than the original theories, and highlighting caution in their use as fundamental descriptions.

Contribution

It demonstrates that effective four-dimensional theories admit more solutions than the higher-dimensional theories, challenging their reliability as fundamental models.

Findings

Effective theories allow wider solution classes.

Caution needed when using effective theories.

Higher-dimensional theories are more restrictive.

Abstract

We derive four-dimensional effective theories for warped compactification of the ten-dimensional IIB supergravity. We show that these effective theories allow a much wider class of solutions than the original higher-dimensional theories. This result indicates that the effective four-dimensional theories should be used with caution, if one regards the higher-dimensional theories more fundamental.