On the physical (im)possibility of lightsabers
arXiv:1906.02575 · doi:10.1088/1361-6404/ab274a
Abstract
In this paper, we use a science fiction theme (i.e. the iconic lightsaber from the Star Wars universe) as a pedagogical tool to introduce aspects of nonlinear electrodynamics due to the quantum vacuum to an audience with an undergraduate physics background. In particular, we focus on one major problem with lightsabers that is commonly invoked as an argument to dismiss them as unrealistic: light blades are not solid and thus cannot be used in a duel as normal swords would. Using techniques coming from ultra intense laser science, we show that for high enough laser intensities, two lightsaber blades can `feel' solid to each other. We argue that this aspect of lightsabers is not impossible due to limitations of the laws of physics, but is very implausible due to the high intensities and energy needed for their operation.
33 pages, 5 figures, accepted in European Journal of Physics
References in corpus (8)
- Nonlinear collective effects in photon-photon and photon-plasma interactions
- Evidence for vacuum birefringence from the first optical polarimetry measurement of the isolated neutron star RX\, J1856.53754
- Search for Stimulated Photon-Photon Scattering in Vacuum
- Photon polarisation in light-by-light scattering: finite size effects
- Visualizing Interstellar's Wormhole
- Analysis of four-wave mixing of high-power lasers for the detection of elastic photon-photon scattering
- Quantum reflection of photons off spatio-temporal electromagnetic field inhomogeneities
- Scheme for the detection of mixing processes in vacuum