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Emergence of Isotropy and Dynamic Scaling in 2D Wave Turbulence in a Homogeneous Bose Gas.

Accepted version
Peer-reviewed

Type

Article

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Abstract

We realize a turbulent cascade of wave excitations in a homogeneous 2D Bose gas and probe on all relevant time and length scales how it builds up from small to large momenta, until the system reaches a steady state with matching energy injection and dissipation. This all-scales view directly reveals the two theoretically expected cornerstones of turbulence formation-the emergence of statistical momentum-space isotropy under anisotropic forcing and the spatiotemporal scaling of the momentum distribution at times before any energy is dissipated.

Description

Keywords

5108 Quantum Physics, 40 Engineering, 5102 Atomic, Molecular and Optical Physics, 51 Physical Sciences

Journal Title

Phys Rev Lett

Conference Name

Journal ISSN

0031-9007
1079-7114

Volume Title

Publisher

American Physical Society (APS)
Sponsorship
Engineering and Physical Sciences Research Council (EP/N011759/1)
European Research Council (682285)
STFC (ST/T006056/1)
Engineering and Physical Sciences Research Council (EP/P009565/1)
European Commission Horizon 2020 (H2020) ERC (101019302)
Engineering and Physical Sciences Research Council (EP/R043396/1)
EPSRC [Grants No. EP/N011759/1 and No. EP/P009565/1], ERC (QBox and UniFlat), STFC [Grant No. ST/T006056/1] and QuantERA (NAQUAS, EPSRC Grant No. EP/R043396/1)
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