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Main Author: Kaloper, Nemanja
Format: Preprint
Published: 2026
Subjects:
Online Access:https://arxiv.org/abs/2605.21577
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author Kaloper, Nemanja
author_facet Kaloper, Nemanja
contents We show that Maxwell theory with a codimension-$1$ Chern-Simons interface supports chiral electromagnetic surface waves on the interface, even when the bulk theory on both sides is conventional vacuum electrodynamics in infinite space. Solving the exact boundary value problem we find that the Chern-Simons interaction acts with opposite sign on the two helicities oriented along the interface, giving rise to one normalizable mode localized on the interface. This mode is a gapless chiral surface photon with linear dispersion and a frequency-independent index of refraction set by the Chern-Simons coefficient. This mode exists despite the absence of ambient material response or geometric confinement.
format Preprint
id arxiv_https___arxiv_org_abs_2605_21577
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Chiral Electromagnetic Surface Waves on Chern-Simons Interfaces
Kaloper, Nemanja
High Energy Physics - Theory
Mesoscale and Nanoscale Physics
High Energy Physics - Phenomenology
Optics
Quantum Physics
We show that Maxwell theory with a codimension-$1$ Chern-Simons interface supports chiral electromagnetic surface waves on the interface, even when the bulk theory on both sides is conventional vacuum electrodynamics in infinite space. Solving the exact boundary value problem we find that the Chern-Simons interaction acts with opposite sign on the two helicities oriented along the interface, giving rise to one normalizable mode localized on the interface. This mode is a gapless chiral surface photon with linear dispersion and a frequency-independent index of refraction set by the Chern-Simons coefficient. This mode exists despite the absence of ambient material response or geometric confinement.
title Chiral Electromagnetic Surface Waves on Chern-Simons Interfaces
topic High Energy Physics - Theory
Mesoscale and Nanoscale Physics
High Energy Physics - Phenomenology
Optics
Quantum Physics
url https://arxiv.org/abs/2605.21577