## Project Details

### Description

String theory is regarded as the leading candidate for a "theory of

everything": a description of matter, gravity and spacetime at the very

smallest length scales, where quantum effects become important for

physics. This confidence in the theory derives from its remarkable

internal consistency that is enforced by its "higher structures":

roughly, generalisations of familiar mathematical ideas of proven

relevance for physics --- such as the idea of symmetry --- that can

accommodate the extended nature of fundamental strings as

opposed to particles. In recent work I discovered the universal string-theoretic higher structure inside our theories of fundamental particles, which has

been hiding in plain sight since the invention of quantum field theory

in the last century. This opens an entirely new window on particle

physics. In this project I propose to use this insight as an

organisational principle for the complexities of particle scattering,

which will yield new efficient ways to do calculations in particle

physics and beyond. This higher structure also has implications for what is called "duality": the hidden physical equivalence of two apparently distinct physical scenarios. Another goal of this project is to understand the interplay

between duality, higher structures, and the geometry of spacetime,

aiming to connect the latest advances in stringy geometry with realworld

physics.

everything": a description of matter, gravity and spacetime at the very

smallest length scales, where quantum effects become important for

physics. This confidence in the theory derives from its remarkable

internal consistency that is enforced by its "higher structures":

roughly, generalisations of familiar mathematical ideas of proven

relevance for physics --- such as the idea of symmetry --- that can

accommodate the extended nature of fundamental strings as

opposed to particles. In recent work I discovered the universal string-theoretic higher structure inside our theories of fundamental particles, which has

been hiding in plain sight since the invention of quantum field theory

in the last century. This opens an entirely new window on particle

physics. In this project I propose to use this insight as an

organisational principle for the complexities of particle scattering,

which will yield new efficient ways to do calculations in particle

physics and beyond. This higher structure also has implications for what is called "duality": the hidden physical equivalence of two apparently distinct physical scenarios. Another goal of this project is to understand the interplay

between duality, higher structures, and the geometry of spacetime,

aiming to connect the latest advances in stringy geometry with realworld

physics.

Acronym | OZR3606 |
---|---|

Status | Active |

Effective start/end date | 1/10/20 → 30/09/21 |

### Flemish discipline codes

- Theoretical particle physics
- General relativity and gravitation
- Field theory and string theory

### Keywords

- string theory
- duality
- quantum field theory