Absence of exponentially localized solitons for the Novikov--Veselov equation at negative energy
arXiv:1102.0692 · doi:10.1088/0951-7715/24/6/007
Abstract
We show that Novikov--Veselov equation (an analog of KdV in dimension 2 + 1) does not have exponentially localized solitons at negative energy.