论文标题
运动引起的激发和辐射来自镜子的原子
Motion induced excitation and radiation from an atom facing a mirror
论文作者
论文摘要
我们研究了由于存在平面完美镜的非相关性，有界，加速的运动而导致的量子耗散作用，即在所有频率下都是完美的导体。我们考虑了一个简化的模型，通过该模型，将移动的“标量原子”耦合到量子真实的标量场，并在平面上受到dirichlet或neumann边界条件的影响。我们使用原子出发方面的扩展相对于静态平均位置，以计算真空持久性幅度以及产生的真空衰减概率。我们评估与原子激发以及粒子发射相对应的过渡幅度，并明确表明真空衰减概率与通过在发射粒子的方向上集成过渡幅度所获得的结果相匹配。我们还计算了最初处于激发态的振荡原子的自发发射速率。
We study quantum dissipative effects due to the non-relativistic, bounded, accelerated motion of a single neutral atom in the presence of a planar perfect mirror, i.e. a perfect conductor at all frequencies. We consider a simplified model whereby a moving `scalar atom' is coupled to a quantum real scalar field, subjected to either Dirichlet or Neumann boundary conditions on the plane. We use an expansion in powers of the departure of the atom with respect to a static average position, to compute the vacuum persistence amplitude, and the resulting vacuum decay probability. We evaluate transition amplitudes corresponding to the excitation of the atom plus the emission of a particle, and show explicitly that the vacuum decay probabilities match the results obtained by integrating the transition amplitudes over the directions of the emitted particle. We also compute the spontaneous emission rate of an oscillating atom that is initially in an excited state.
