电磁场-物质耦合系统的新真空态及Casimir效应的物理解释
New Vacuum State of the Electromagnetic Field-Matter Coupling System and the Physical Interpretation of Casimir Effect
摘要:
提出了一种计算电磁场与物质场相互作用系统基态能量的新方法。在类压缩态的假设下,得到了相互作用系统的一个新的真空态。新真空态的能量低于现有理论中的二阶微扰理论给出的能量。在我们的理论中,Casimir效应既不归因于真实电磁场零点能的量子涨落,也不归因于真实物质场零点能的量子涨落,而是归因于相互作用系统真空态的量子涨落。电磁场和物质场都是造成卡西米尔效应的原因。
英文摘要:
A new concise method is presented for the calculation of the ground-state energy of the electromagnetic field and matter field interacting system. With the assumption of squeezed-like state, a new vacuum state is obtained for the interacting system. The energy of the new vacuum state is lower than that given by the second-order perturbation theory in existing theories. In our theory, the Casimir effect is attributed neither to the quantum fluctuation in the zero-point energy of the genuine electromagnetic field nor to that in the zero-point energy of the genuine matter field, but to that in the vacuum state of the interacting system. Both electromagnetic field and matter field are responsible for the Casimir effect.
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