弛豫涨落（自停止弛豫）和弛豫停止机制综述
Relaxion Fluctuations (Self-stopping Relaxion) and Overview of Relaxion Stopping Mechanisms
摘要：
在迄今提出的电弱尺度宇宙学弛豫机制的实现中，均匀弛豫场的量子涨落的影响一直被忽略。我们表明，它们可以在经典的宇宙学演化的弛豫场通过其许多潜在的障碍。弛豫粒子的产生可以作为弛豫的有效停止机制。我们重新审视了最初的放松建议，并确定在哪些条件下通货膨胀可能不再需要作为摩擦的来源。我们审查替代停止机制，并详细确定每个允许的参数空间（无论是发生之前，期间和之后的通货膨胀），也考虑和严格限制的情况下，从电弱规范玻色子生产模型中的摩擦与大的和希格斯独立的障碍。
英文摘要：
In implementations of the electroweak scale cosmological relaxation mechanism proposed so far, the effect of the quantum fluctuations of the homogeneous relaxion field has been ignored. We show that they can grow during the classical cosmological evolution of the relaxion field passing through its many potential barriers. The resulting production of relaxion particles can act as an efficient stopping mechanism for the relaxion. We revisit the original relaxion proposal and determine under which conditions inflation may no longer be needed as a source of friction. We review alternative stopping mechanisms and determine in detail the allowed parameter space for each of them (whether happening before, during and after inflation), also considering and severely constraining the case of friction from electroweak gauge boson production in models with large and Higgs-independent barriers.
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