Time dilation of a bound half-fluxon pair in a long Josephson junction with a ferromagnetic insulator
arXiv:0710.0947 · doi:10.1103/PhysRevLett.99.207004
Abstract
The fluxon dynamics in a long Josephson junction with a ferromagnetic insulating layer is investigated. It is found that the Josephson phase obeys a double sine-Gordon equation involving a bound pi fluxon solution, and the internal oscillations of the bound pair acting as a clock exhibit Lorentz reductions in their frequencies regarded as a relativistic effect in the time domain, i.e., time dilation. This is the complement to the Lorentz contraction of fluxons with no clock. A possible observation scheme is also discussed.
arXiv comment4 pages, 5 figures, to appear in Physical Review Letters
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