Spatiotemporal symmetries and energy-momentum conservation in uniform spacetime metamaterials

Date

2024-11-13

Director

Publisher

American Chemical Society
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión publicada / Argitaratu den bertsioa

Project identifier

European Commission/Horizon 2020 Framework Programme/948504 openaire
Impacto
No disponible en Scopus

Abstract

Spacetime metamaterials are opening new regimes of light-matter interactions based on the breaking of temporal and spatial symmetries, as well as intriguing concepts associated with synthetic motion. In this work, we investigate the continuous spatiotemporal translation symmetry of spacetime metamaterials with uniform modulation velocity. Using Noether's theorem, we demonstrate that such symmetry entails the conservation of the energy momentum. We highlight how energy-momentum conservation imposes constraints on the range of allowed light-matter interactions within spacetime metamaterials, as illustrated with examples of the collision of electromagnetic and modulation pulses. Furthermore, we discuss the similarities and differences between the conservation of energy-momentum and relativistic effects. We believe that our work provides a step forward in clarifying the fundamental theory underlying spacetime metamaterials.

Description

Keywords

Noether's theorem, Spacetime metamaterials, Spatiotemporal metamaterials, Symmetries, Time-varying media

Department

Ingeniería Eléctrica, Electrónica y de Comunicación / Ingeniaritza Elektrikoa, Elektronikoa eta Telekomunikazio Ingeniaritza / Institute of Smart Cities - ISC

Faculty/School

Degree

Doctorate program

item.page.cita

Liberal, I., Ganfornina-Andrades, A., Vázquez-Lozano, J. E. (2024) Spatiotemporal symmetries and energy-momentum conservation in uniform spacetime metamaterials. ACS Photonics, 11(12), 5273-5280. https://doi.org/10.1021/acsphotonics.4c01496

item.page.rights

© The authors. This article is licensed under CC-BY 4.0

Licencia

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