Electrostatic nature of cavity-mediated interactions between low-energy matter excitations

Fuente: arXiv
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Auteurs principaux: Pantazopoulos, Petros-Andreas, Feist, Johannes, Kamra, Akashdeep, García-Vidal, Francisco J.
Format: Preprint
Publié: 2023
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author Pantazopoulos, Petros-Andreas
Feist, Johannes
Kamra, Akashdeep
García-Vidal, Francisco J.
author_facet Pantazopoulos, Petros-Andreas
Feist, Johannes
Kamra, Akashdeep
García-Vidal, Francisco J.
contents The use of cavity quantum electrodynamical effects, i.e., of vacuum electromagnetic fields, to modify material properties in cavities has rapidly gained popularity and interest in the last few years. However, there is still a scarcity of general results that provide guidelines for intuitive understanding and limitations of what kind of effects can be achieved. We provide such a result for the effective interactions between low-energy matter excitations induced either directly by their mutual coupling to the cavity electromagnetic (EM) field or indirectly through coupling to mediator modes that couple to the EM field. We demonstrate that the induced interactions are purely electrostatic in nature and are thus fully described by the EM Green's function evaluated at zero frequency. Our findings imply that reduced models with one or a few cavity modes can easily give misleading results.
format Preprint
id arxiv_https___arxiv_org_abs_2311_00183
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Electrostatic nature of cavity-mediated interactions between low-energy matter excitations
Pantazopoulos, Petros-Andreas
Feist, Johannes
Kamra, Akashdeep
García-Vidal, Francisco J.
Quantum Physics
Mesoscale and Nanoscale Physics
The use of cavity quantum electrodynamical effects, i.e., of vacuum electromagnetic fields, to modify material properties in cavities has rapidly gained popularity and interest in the last few years. However, there is still a scarcity of general results that provide guidelines for intuitive understanding and limitations of what kind of effects can be achieved. We provide such a result for the effective interactions between low-energy matter excitations induced either directly by their mutual coupling to the cavity electromagnetic (EM) field or indirectly through coupling to mediator modes that couple to the EM field. We demonstrate that the induced interactions are purely electrostatic in nature and are thus fully described by the EM Green's function evaluated at zero frequency. Our findings imply that reduced models with one or a few cavity modes can easily give misleading results.
title Electrostatic nature of cavity-mediated interactions between low-energy matter excitations
topic Quantum Physics
Mesoscale and Nanoscale Physics
url https://arxiv.org/abs/2311.00183