论文标题
重力Coleman-Weinberg机制
Gravitational Coleman-Weinberg Mechanism
论文作者
论文摘要
Coleman-Weinberg机制提供了一个程序，通过该程序，由于比例对称性的异常性质，标量最初没有质量参数的标量场获得了质量。循环校正会触发自发对称性破裂和非平凡真空的外观。我们首先回顾了Colemanweinberg机制，标量量子电动力学的基本示例，在扰动性方面，标量粒子通过光子环变得巨大。然后，我们介绍了本文的主要结果，即我们将重力Coleman-Weinberg机制命名的：我们在不明确的能量尺度的引力理论中分析了相同的效果。最后，我们还研究了上述引力理论中两个标量场的机制。我们将得出引力Coleman-Weinberg电位，分析我们具有对称性破裂的参数空间，并获得相应的标量质量的值。
The Coleman-Weinberg mechanism provides a procedure by which a scalar field, which initially has no mass parameters, acquires a mass due to the anomalous nature of scale symmetry. Loop corrections trigger a spontaneous symmetry breaking and the appearance of a non-trivial vacuum. We first review the basic example of the ColemanWeinberg mechanism, scalar Quantum Electrodynamics, in a perturbative regime where the scalar particle becomes massive through photon loops. We then present the main results of this article, what we name the gravitational Coleman-Weinberg mechanism: we analyse the same effect in a gravitational theory without explicit energy scales at tree-level. Finally, we also study the mechanism for two scalar fields in the mentioned gravitational theory. We will derive the gravitational Coleman-Weinberg potentials, analyse the parameter space where we have a symmetry breaking, and obtain the value of the corresponding scalar masses.
