标题： 加速多能级原子在偶极耦合到标量场导数时的自发激发 显示英文标题

标题： Spontaneous excitation of an accelerated multilevel atom in dipole coupling to the derivative of a scalar field

摘要： 我们研究了加速多能级原子在偶极耦合到无质量量子标量场的导数时的自发激发，并分别计算了真空涨落和辐射反应对原子平均能量变化率的贡献。 发现与假设原子和场之间存在类似单极子的相互作用的情况相反，除了可以看作是处于Unruh温度的环境热浴的结果的修正外，还出现了与加速度平方成比例的额外修正，与惯性情况相比，加速引起的修正项表现出各向异性，对于各向同性极化的加速原子，纵向极化贡献是横向极化贡献的四倍。 我们的结果表明，加速度对平均原子能量变化率的影响不仅取决于原子所耦合的量子场，还取决于相互作用的类型，即使考虑相同的量子标量场也是如此。 显示英文摘要

摘要： We study the spontaneous excitation of an accelerated multilevel atom in dipole coupling to the derivative of a massless quantum scalar field and separately calculate the contributions of the vacuum fluctuation and radiation reaction to the rate of change of the mean atomic energy of the atom. It is found that, in contrast to the case where a monopole like interaction between the atom and the field is assumed, there appear extra corrections proportional to the acceleration squared, in addition to corrections which can be viewed as a result of an ambient thermal bath at the Unruh temperature, as compared with the inertial case, and the acceleration induced correction terms show anisotropy with the contribution from longitudinal polarization being four times that from the transverse polarization for isotropically polarized accelerated atoms. Our results suggest that the effect of acceleration on the rate of change of the mean atomic energy is dependent not only on the quantum field to which the atom is coupled, but also on the type of the interaction even if the same quantum scalar field is considered.