Kinetic equation for a soliton gas - SOLITONS, COLLAPSES AND ...
Kinetic equation for a soliton gas - SOLITONS, COLLAPSES AND ...
Kinetic equation for a soliton gas - SOLITONS, COLLAPSES AND ...
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The Whitham <strong>equation</strong>s (KdV case)The generating <strong>equation</strong> <strong>for</strong> the KdV-Whitham system is (Flaschka,Forest, McLaughlin 1979)(dp N ) t = (dq N ) x ,where dp N and dq N are the quasimomentum and quasienergydifferentials on the hyperelliptic Riemann surface of genus N:R 2 (λ) =∏(λ − λ j ), λ ∈ C, λ j ∈ R .2N+1j=1Asymptotic behaviour near λ = −∞:−λ ≫ 1 : dp N ∼ − dλ(−λ) 1/2 ,dq N ∼ (−λ) 1/2 dλGennady El<strong>Kinetic</strong> <strong>equation</strong> <strong>for</strong> a <strong>soliton</strong> <strong>gas</strong>