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Multipole Approach to the Dynamical Casimir Effect with Finite-Size Scatterers.

作者信息

Alonso Lucas, Matos Guilherme C, Impens François, Maia Neto Paulo A, de Melo E Souza Reinaldo

机构信息

Instituto de Física, Universidade Federal Fluminense, Niterói 24210-346, RJ, Brazil.

Instituto de Física, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-972, RJ, Brazil.

出版信息

Entropy (Basel). 2024 Mar 12;26(3):251. doi: 10.3390/e26030251.

DOI:10.3390/e26030251
PMID:38539762
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10969136/
Abstract

A mirror subjected to a fast mechanical oscillation emits photons out of the quantum vacuum-a phenomenon known as the dynamical Casimir effect (DCE). The mirror is usually treated as an infinite metallic surface. Here, we show that, in realistic experimental conditions (mirror size and oscillation frequency), this assumption is inadequate and drastically overestimates the DCE radiation. Taking the opposite limit, we use instead the dipolar approximation to obtain a simpler and more realistic treatment of DCE for macroscopic bodies. Our approach is inspired by a microscopic theory of DCE, which is extended to the macroscopic realm by a suitable effective Hamiltonian description of moving anisotropic scatterers. We illustrate the benefits of our approach by considering the DCE from macroscopic bodies of different geometries.

摘要
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/41ad97cfc8c3/entropy-26-00251-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/1ffceb09c7d7/entropy-26-00251-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/0a3df3e4ea77/entropy-26-00251-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/2b6036eed2eb/entropy-26-00251-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/f01ed2f4b0f1/entropy-26-00251-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/0a2e6b2f78c0/entropy-26-00251-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/41ad97cfc8c3/entropy-26-00251-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/1ffceb09c7d7/entropy-26-00251-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/0a3df3e4ea77/entropy-26-00251-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/2b6036eed2eb/entropy-26-00251-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/f01ed2f4b0f1/entropy-26-00251-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/0a2e6b2f78c0/entropy-26-00251-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/c346/10969136/41ad97cfc8c3/entropy-26-00251-g006.jpg

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Nat Nanotechnol. 2020 Feb;15(2):89-93. doi: 10.1038/s41565-019-0605-9. Epub 2020 Jan 13.
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Motion Induced Radiation from a Vibrating Cavity.
Phys Rev Lett. 1996 Jul 22;77(4):615-618. doi: 10.1103/PhysRevLett.77.615.
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Quantum radiation generated by a moving mirror in free space.
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Effective Hamiltonian for the radiation in a cavity with a moving mirror and a time-varying dielectric medium.
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