Recent Results in String Duality

TL;DR

This paper reviews evidence for string duality, a principle suggesting that different string theories at varying couplings are equivalent, highlighting recent developments in the field.

Contribution

It provides a summary of the evidence and recent progress in understanding string duality, aimed at non-string theorists.

Findings

String duality links different string theories at various couplings.

Recent developments have strengthened the evidence for string duality.

The review clarifies the concept for a broader scientific audience.

Abstract

This is a talk given at YKIS '95, primarily to non-string theorists. I review the evidence for string duality, the principle that any string theory at strong coupling looks like another string theory at weak coupling. A postscript summarizes developments since the conference.