IIB Soliton Spectra with All Fluxes Activated

TL;DR

This paper extends the classification of fluxes in type IIB string theory using a generalized AHSS, applying it to various brane configurations and analyzing how conserved charge groups evolve during phase transitions.

Contribution

It proposes a flux classification sequence generalizing AHSS for type IIB string theory, incorporating dual pairs and testing it against known brane spectra.

Findings

The formalism successfully classifies D-branes, NS5-branes, and F-strings in flux backgrounds.

Conserved charge groups change during phase transitions affecting the cosmological constant.

Comparison with known spectra validates the proposed classification sequence.

Abstract

Building upon an earlier proposal for the classification of fluxes, a sequence is proposed which generalizes the AHSS by computing type IIB string theory's group of conserved RR and also NS charges, which is conjectured to be a K-theory of dual pairs. As a test, the formalism of Maldacena, Moore and Seiberg (hep-th/0108100) is applied to classify D-branes, NS5-branes, F-strings and their dielectric counterparts in IIB compactified on a 3-sphere with both NS and RR background fluxes. The soliton spectra on the 3-sphere are then compared with the output of the sequence, as is the baryon spectrum in Witten's non-spin^c example, AdS^5xRP^5. The group of conserved charges is seen to change during Brown-Teitelboim-like phase transitions which change the effective cosmological constant.