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Emergent geometries and nonlinear-wave dynamics in photon fluids

  Articoli su Riviste JCR/ISI  (anno 2016)

Autori:  Marino F., Maitland C., Vocke D., Ortolan A., Faccio D

Affiliazione Autori:  CNR-Istituto Nazionale di Ottica, L.go E. Fermi 6, I-50125 Firenze, Italy; INFN, Sez. di Firenze, Via Sansone 1, I-50019 Sesto Fiorentino (FI), Italy; School of Engineering and Physical Sciences, SUPA, Institute of Photonics and Quantum Sciences Heriot-Watt University, Edinburgh EH14 4AS, UK; INFN, Laboratori Nazionali di Legnaro, Viale dell’ Universita 2, I-35020 Legnaro (PD), Italy.

Riassunto:  Nonlinear waves in defocusing media are investigated in the framework of the hydrodynamic description of light as a photon fluid. The observations are interpreted in terms of an emergent curved spacetime generated by the waves themselves, which fully determines their dynamics. The spacetime geometry emerges naturally as a result of the nonlinear interaction between the waves and the self-induced background flow. In particular, as observed in real fluids, different points of the wave profile propagate at different velocities leading to the self-steepening of the wave front and to the formation of a shock. This phenomenon can be associated to a curvature singularity of the emergent metric. Our analysis offers an alternative insight into the problem of shock formation and provides a demonstration of an analogue gravity model that goes beyond the kinematic level.

Volume n.:  6      Pagine da: 23282  a: 23282
Ulteriori informazioni:  D.F. acknowledges financial support from the European Research Council under the European Unions Seventh Framework Programme (FP/2007-2013)/ERC GA 306559 and EPSRC (UK, Grant EP/J00443X/1).
DOI: 10.1038/srep23282

*Impact Factor della Rivista: (2016) 4.259
data tratti da "WEB OF SCIENCE" (marchio registrato di Thomson Reuters) ed aggiornati a:  14/07/2019

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