论文标题
用于宇宙空间中的Yukawa互动的狄拉克场的瞬时真空
Instantaneous vacuum for Dirac fields with a Yukawa interaction in cosmological space-times
论文作者
论文摘要
我们提出了一个合适的真空状态，用于在弗里德曼·罗伯逊 - 沃克 - 莱米特雷时空中与经典标量场相互作用的量化迪拉克场。该状态是由该田地相关傅立叶模式的绝热扩展的扩展版构建的。我们计算完整的重新归一化应力张量。在任何给定的初始时间中，始终可以选择这种瞬时真空吸尘器消失的傅立叶模式用于重新归一化的应激能量张量。我们检查了几个通货膨胀模型的解决方案的一致性。
We propose a suitable vacuum state for a quantized Dirac field interacting with a classical scalar field in a Friedman-Robertson-Walker-Lemaitre spacetime. This state is constructed from an extended version of the adiabatic expansion of the associated Fourier modes of the field. We compute the full renormalized stress-energy tensor. For any given initial time, this instantaneous vacuum can always be chosen to have vanishing Fourier modes for the renormalized stress-energy tensor. We check the consistency of the solution for several inflationary models.
