Duality-covariant particles and exotic branes
Abstract
In this paper we construct duality-covariant worldvolume dynamics of particles and branes. We extend known actions and phase space formulations to include the hidden E8 symmetry of 11D supergravity, analogous to the Ehlers symmetry of 4D gravity. Making the worldvolume theory manifestly duality-covariant requires the ancillary structure of E8 exceptional field theory to be taken into account. For zero-branes, we propose an enlarged worldline model with a coadjoint orbit term to encode this. More generally, we propose worldvolume theories for arbitrary exotic branes in a way that generalises the known gauged sigma model of the Kaluza-Klein monopole. These are natural in the duality-covariant Hamiltonian formulation employed here. We discuss the case of zero-branes in eleven dimensions as an illustrative example.
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BibTeX
@misc{oconnor2026dualitycovariant,
title = {{Duality-covariant particles and exotic branes}},
author = {Josh O'Connor and David Osten},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2606.26504},
eprint = {2606.26504},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2606.26504},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Duality-covariant particles and exotic branes
AU - Josh O'Connor
AU - David Osten
PY - 2026
DA - 2026/10/21
PB - arXiv
DO - 10.48550/arxiv.2606.26504
UR - https://arxiv.org/abs/2606.26504
AB - In this paper we construct duality-covariant worldvolume dynamics of particles and branes. We extend known actions and phase space formulations to include the hidden E_8 symmetry of 11D supergravity, analogous to the Ehlers symmetry of 4D gravity. Making the worldvolume theory manifestly duality-covariant requires the ancillary structure of E_8 exceptional field theory to be taken into account. For zero-branes, we propose an enlarged worldline model with a coadjoint orbit term to encode this. More generally, we propose worldvolume theories for arbitrary exotic branes in a way that generalises the known gauged sigma model of the Kaluza-Klein monopole. These are natural in the duality-covariant Hamiltonian formulation employed here. We discuss the case of zero-branes in eleven dimensions as an illustrative example.
ER -