Worldline approach for numerical computation of electromagnetic Casimir energies: Scalar field coupled to magnetodielectric media
Abstract
Here, we present a worldline method for the calculation of Casimir energies for scalar fields coupled to magnetodielectric media. The scalar model we consider may be applied in arbitrary geometries, and it corresponds exactly to one polarization of the electromagnetic field in planar layered media. Starting from the field theory for electromagnetism, we work with the two decoupled polarizations in planar media and develop worldline path integrals, which represent the two polarizations separately, for computing both Casimir and Casimir-Polder potentials. We then show analytically that the path integrals for the transverse-electric polarization coupled to a dielectric medium converge to the proper solutions in certain special cases, including the Casimir-Polder potential of an atom near a planar interface, and the Casimir energy due to two planar interfaces. We also evaluate the path integrals numerically via Monte Carlo path-averaging for these cases, studying the convergence and performance of the resulting computational techniques. Lastly, while these scalar methods are only exact in particular geometries, they may serve as an approximation for Casimir energies for the vector electromagnetic field in other geometries.
- Authors:
-
[2];
- Univ. of Oregon, Eugene, OR (United States). Oregon Center for Optical, Molecular and Quantum Science, Dept. of Physics
- Santa Fe Inst., Santa Fe, NM (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE; National Science Foundation (NSF)
- OSTI Identifier:
- 1414127
- Report Number(s):
- LA-UR-16-24039
Journal ID: ISSN 2469-9926; PLRAAN; TRN: US1800653
- Grant/Contract Number:
- AC52-06NA25396; PHY-1068583; PHY-1505118
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review A
- Additional Journal Information:
- Journal Volume: 94; Journal Issue: 4; Journal ID: ISSN 2469-9926
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Mackrory, Jonathan B., Bhattacharya, Tanmoy, and Steck, Daniel A. Worldline approach for numerical computation of electromagnetic Casimir energies: Scalar field coupled to magnetodielectric media. United States: N. p., 2016.
Web. doi:10.1103/PhysRevA.94.042508.
Mackrory, Jonathan B., Bhattacharya, Tanmoy, & Steck, Daniel A. Worldline approach for numerical computation of electromagnetic Casimir energies: Scalar field coupled to magnetodielectric media. United States. https://doi.org/10.1103/PhysRevA.94.042508
Mackrory, Jonathan B., Bhattacharya, Tanmoy, and Steck, Daniel A. Wed .
"Worldline approach for numerical computation of electromagnetic Casimir energies: Scalar field coupled to magnetodielectric media". United States. https://doi.org/10.1103/PhysRevA.94.042508. https://www.osti.gov/servlets/purl/1414127.
@article{osti_1414127,
title = {Worldline approach for numerical computation of electromagnetic Casimir energies: Scalar field coupled to magnetodielectric media},
author = {Mackrory, Jonathan B. and Bhattacharya, Tanmoy and Steck, Daniel A.},
abstractNote = {Here, we present a worldline method for the calculation of Casimir energies for scalar fields coupled to magnetodielectric media. The scalar model we consider may be applied in arbitrary geometries, and it corresponds exactly to one polarization of the electromagnetic field in planar layered media. Starting from the field theory for electromagnetism, we work with the two decoupled polarizations in planar media and develop worldline path integrals, which represent the two polarizations separately, for computing both Casimir and Casimir-Polder potentials. We then show analytically that the path integrals for the transverse-electric polarization coupled to a dielectric medium converge to the proper solutions in certain special cases, including the Casimir-Polder potential of an atom near a planar interface, and the Casimir energy due to two planar interfaces. We also evaluate the path integrals numerically via Monte Carlo path-averaging for these cases, studying the convergence and performance of the resulting computational techniques. Lastly, while these scalar methods are only exact in particular geometries, they may serve as an approximation for Casimir energies for the vector electromagnetic field in other geometries.},
doi = {10.1103/PhysRevA.94.042508},
journal = {Physical Review A},
number = 4,
volume = 94,
place = {United States},
year = {Wed Oct 12 00:00:00 EDT 2016},
month = {Wed Oct 12 00:00:00 EDT 2016}
}
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