Dynamical Casimir effect meets material science

7th Global Conference on Materials Science and Engineering

工业技术（总论）;材料科学

Dodonov, V.V.^1

Institute of Physics, International Center for Physics, University of Brasilia, P.O. Box 04455, Brasilia, Federal District

70919-970, Brazil^1

关键词: Approximate analytical solutions;    Dielectric permeability;    Dynamical Casimir effect;    Material science;    Mode amplitudes;    Semiconductor slabs;    Short laser pulse;    Simplifying assumptions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/474/1/012009/pdf
DOI  :  10.1088/1757-899X/474/1/012009

来源: IOP

【 摘 要 】

The aim of this study is to analyze attempts to observe the so called Dynamical Casimir effect in cavities, changing their optical lengths by means of fast time variations of material properties (dielectric permeability or conductivity) of thin slabs attached to the cavity walls. The emphasis is made on the case of semiconductor slabs excited by short laser pulses. Considering the evolution of the classical electromagnetic field in this case, an approximate analytical solution for an infinite set of coupled ordinary differential equations for the mode amplitudes is derived under certain simplifying assumptions. According to this solution, an amplification of the initial field can be made, provided the induced dielectric permeability can become negative with a large absolute value. Evaluations of the feasibility of such a scenario are given.