Proton Transport in Hydrogen-bonded Systems in Anharmonic Interaction Approximation : an Analytical Approach

We study the collective proton motion in hydrogen-bonded systems in anharmonic interaction approximation, and obtain analytical solutions of kinkantikink solitons. The asymmetric feature of kink-antikink solitons can be clearly seen from the solutions. Some basic physical quantities of the kink and antikink solitons are calculated in anharmonic interaction approximation.