2-D gravisolitons in string theory

TL;DR

This paper explores 2-dimensional gravisoliton solutions in string theory, including black holes, wormholes, and cosmological models, demonstrating their generation from flat space via soliton dressing and comparing them to other integrable systems.

Contribution

It introduces gravisolitons as exact solutions in string theory's reduced axion-dilaton gravity, illustrating their application with the Nappi-Witten universe example.

Findings

Gravisolitons include black-hole, worm-hole, and cosmological solutions.

Nappi-Witten universe generated from flat space by soliton dressing.

Comparison of gravisolitons with other 2D integrable soliton solutions.

Abstract

Several gravitational string backgrounds can be interpreted as 2-dim soliton solutions of reduced axion-dilaton gravity. They include black-hole and worm-hole solutions as well as cosmological models with an exact conformal field theory description. We illustrate the use of gravisolitons for the particular example of Nappi-Witten universe which is thus "created" from flat space by soliton dressing. We also make some general comments about the status of gravisolitons in comparison to soliton solutions of other 2-dim integrable systems without gravity. (Contribution to the proceedings of the 2nd International Sakharov Conference, Moscow)