Abstract
X-waves are an example of a localized wave packet solution of the homogeneous wave equation, and can potentially arise in any area of physics relating to wave phenomena, such as acoustics, electromagnetism, or quantum mechanics. They have been predicted in condensed matter systems such as atomic Bose-Einstein condensates in optical lattices, and were recently observed in exciton-polariton condensates. Here we show that polariton X-waves result from an interference between two separating wave packets that arise from the combination of a locally hyperbolic dispersion relation and nonlinear interactions. We show that similar X-wave structures could also be observed in expanding spin-orbit coupled Bose-Einstein condensates.Citation
Colas, D., Laussy, F. P. and Davis, M. J. (2019) Formation of nonlinear X-waves in condensed matter systems, Physical Review B, 99, 214301. DOI: 10.1103/PhysRevB.99.214301Publisher
American Physical Society (APS)Journal
Physical Review BAdditional Links
https://journals.aps.org/prb/abstract/10.1103/PhysRevB.99.214301Type
Journal articleLanguage
enISSN
2469-9950EISSN
2469-9969ae974a485f413a2113503eed53cd6c53
10.1103/physrevb.99.214301
Scopus Count
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