Article
Comment on “Soliton ratchets induced by excitation of internal modes”
Author/s | Quintero, Niurka R.
Sánchez-Rey, Bernardo Casado Pascual, Jesús |
Department | Universidad de Sevilla. Departamento de Física Aplicada I Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear |
Publication Date | 2005 |
Deposit Date | 2015-04-07 |
Published in |
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Abstract | Very recently Willis et al. [Phys. Rev. E 69, 056612 (2004)] have used a collective variable theory to explain the appearance of a nonzero energy current in an ac-driven, damped sine-Gordon equation. In this Comment, we ... Very recently Willis et al. [Phys. Rev. E 69, 056612 (2004)] have used a collective variable theory to explain the appearance of a nonzero energy current in an ac-driven, damped sine-Gordon equation. In this Comment, we prove rigorously that the time-averaged energy current in an ac-driven nonlinear Klein-Gordon system is strictly zero. |
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