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Refraction in spacetime
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10.1119/1.3553459
/content/aapt/journal/ajp/79/6/10.1119/1.3553459
http://aip.metastore.ingenta.com/content/aapt/journal/ajp/79/6/10.1119/1.3553459
View: Figures

Figures

Image of Fig. 1.
Fig. 1.

(a) Path taken by an optical or quantum wave through two adjoining media with different refractive indices and . (b) Trajectory of a wave packet in -dimensional spacetime, with time measured in terms of propagation distance. The wave packet exhibits a refractionlike phenomenon with the refraction angles satisfying a modified law of refraction given by Eq. (12b). (c) Trajectory of an optical wave in -dimensional spacetime when crossing between two nondispersive media. The equivalent law describing its refraction in spacetime is different [see Eq. (12a)]. (d) Refractive index as a function of the spatial coordinate.

Image of Fig. 2.
Fig. 2.

Refraction in spacetime for a Gaussian wave packet. The coordinate is measured in terms of an arbitrary unit of length , and . The parameters used in the simulation are , , , and . The wave packet is refracted away from the normal as a result of the positive potential step. The white lines are plots of the trajectories for the incident, reflected, and the refracted rays obeying the law of refraction in spacetime [Eq. (12b)].

Image of Fig. 3.
Fig. 3.

Refraction in spacetime for a Gaussian wave packet that broadens significantly during the scattering event. The parameters are the same as in Fig. 2, except that . The interference fringes between the incident and reflected components are seen to be curved, in contrast to the phase fronts in Fig. 2 which are straight.

Image of Fig. 4.
Fig. 4.

Birefringence in spacetime of a Gaussian wave packet prepared in a field-free region as a linear superposition of spin- and spin- components with equal weight. The parameters are , , , and . The incident wave packet crosses into a region with finite magnetic field at approximately (that is, ). The two distinct paths visible for the transmitted wave correspond to its separated spin- and spin- components.

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/content/aapt/journal/ajp/79/6/10.1119/1.3553459
2011-05-13
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Refraction in spacetime
http://aip.metastore.ingenta.com/content/aapt/journal/ajp/79/6/10.1119/1.3553459
10.1119/1.3553459
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