Tsitoura, F.F.TsitouraGietz, U.U.GietzChabchoub, A.A.ChabchoubHoffmann, N.N.Hoffmann2019-05-022019-05-022018-06-01Physical review letters 120 (22): 224102 (2018)http://hdl.handle.net/11420/2584We report a theoretical derivation, an experimental observation and a numerical validation of nonlinear phase domain walls in weakly nonlinear deep water surface gravity waves. The domain walls presented are connecting homogeneous zones of weakly nonlinear plane Stokes waves of identical amplitude and wave vector but differences in phase. By exploiting symmetry transformations within the framework of the nonlinear Schrödinger equation we demonstrate the existence of exact analytical solutions representing such domain walls in the weakly nonlinear limit. The walls are in general oblique to the direction of the wave vector and stationary in moving reference frames. Experimental and numerical studies confirm and visualize the findings. Our present results demonstrate that nonlinear domain walls do exist in the weakly nonlinear regime of general systems exhibiting dispersive waves.en1079-7114Physical review letters201822224102American Physical Societyhttp://rightsstatements.org/vocab/InC/1.0/Nonlinear Sciences - Pattern Formation and SolitonsNonlinear Sciences - Pattern Formation and SolitonsPhysikTechnikIngenieurwissenschaftenPhase domain walls in weakly nonlinear deep water surface gravity wavesJournal Article10.15480/882.420410.1103/PhysRevLett.120.22410210.15480/882.42041706.07394v2To cite this version: F. Tsitoura, U. Gietz, A. Chabchoub, and N. Hoffmann. Phase Domain Walls in Weakly Nonlinear Deep Water Surface Gravity Waves. Physical Review Letters, American Physical Society, 2018, 120 (22), pp. 224102. 10.1103/PhysRevLett.120.224102Journal Article