Analytical Solutions of a Model for Brownian Motion in the Double Well Potential

作者：Liu Ai-Jie^*; Zheng Lian-Cun; Ma Lian-Xi; Zhang Xin-Xin

来源：Communications in Theoretical Physics, 2015, 63(1): 51-56.

DOI：10.1088/0253-6102/63/1/09

• Brown motion
• homotopy analysis method
• Schrodinger equation
• double well potential

In this paper, the analytical solutions of Schrodinger equation for Brownian motion in a double well potential are acquired by the homotopy analysis method and the Adomian decomposition method. Double well potential for Brownian motion is always used to obtain the solutions of Fokker-Planck equation known as the Klein Kramers equation, which is suitable for separation and additive Hamiltonians. In essence, we could study the random motion of Brownian particles by solving Schrodinger equation. The analytical results obtained from the two different methods agree with each other well. The double well potential is affected by two parameters, which are analyzed and discussed in details with the aid of graphical illustrations. According to the final results, the shapes of the double well potential have significant influence on the probability density function.

• 出版日期2015-1
• 单位北京科技大学