Advances in String Theory in Curved Backgrounds: A Synthesis Report

TL;DR

This report synthesizes recent advances in classical and quantum string dynamics within curved backgrounds, highlighting new phenomena, effects of cosmological constants, and developments in string cosmology and black hole physics.

Contribution

It provides a comprehensive overview of novel string solutions, effects of spacetime curvature, and recent progress in string cosmology and quantum gravity theories.

Findings

Discovery of multistring solutions in curved backgrounds

Insights into string behavior with cosmological constant and curvature

Development of non-singular string cosmologies and dual QFT-string relations

Abstract

A synthetic report of the advances in the study of classical and quantum string dynamics in curved backgrounds is provided, namely: the new feature of multistring solutions; the effect of a cosmological constant and of spacial curvature on classical and quantum strings; classical splitting of fundamental strings;the general string evolution in constant curvature spacetimes;the conformal invariant effects;strings on plane waves, shock waves and spacetime singularities and its spectrum. New developments in string gravity and string cosmology are reported: string driven cosmology and its predictions;the primordial gravitation wave background; non-singular string cosmologies from exact conformal field theories;QFT, string temperature and the string phase of de Sitter space; the string phase of black holes;new dual relation between QFT regimes and string regimes and the 'QFT/String Tango'; new coherent string states and minimal uncertainty principle in string theory