Abstract:
We study a scheme of fast-forward adiabatic quantum dynamics of a $(2 + 1)$ Dirac particle. This scheme was originally proposed by Masuda and Nakamura. In this scheme, we include the adiabatic parameter that maintains the adiabatic motion of the particle and fast forward its motion by introducing a time scaling parameter. The fast forward adiabatic state is obtained by determining the regularization term and driving potential. We introduce the proposed method to the system with the Dirac particle using a $(2 + 1)$ dimensiontime-dependent Dirac equation and obtain the regularization term, the driving scalar potential $V_{FF}$ and the driving vector potential $A_{FF}$. By tuning the driving electric field, this method can accelerate the adiabatic dynamics of an electron as a Dirac particle trapped in the ground state in the plane $xy$ and an electric field in the $x$ direction and a constant magnetic field in the $y$ direction. This acceleration will preserve the ground state of the wave function from the initial time to the final time.
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