Higgs-induced screening mechanisms in scalar-tensor theories.

Higgs-induced screening mechanisms in scalar-tensor theories.
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标量张量理论中希格斯诱导的筛选机制。

DOI:
10.1111/nyas.15092
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发表时间:
2023
影响因子:
5.2
通讯作者:
Burrage C
Burrage C
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Burrage C

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我们考虑光共形耦合标量场的理论,即直接耦合到引力扇区的Ricci标量。这个理论可以等效地写成一个光标量,它与粒子物理学的标准模型耦合,并具有希格斯-门户耦合的特定组合。当共形耦合函数中包含共形耦合标量中的线性项和二次项时,我们发现在经典势的最小值附近展开后得到的光传播模的有效质量及其与物质场的耦合依赖于背景环境的能量密度.这是尽管在光共形耦合场的原始运动方程中没有非线性项。相反,我们发现原型希格斯势的非线性传递到光模式。通过这种方式,我们提出了一种新的实现筛选机制,其中耦合到标准模型的光自由度能够通过环境和薄壳效应避免实验约束。
We consider the theory of a light conformally coupled scalar field, that is, one that is coupled directly to the Ricci scalar of the gravitational sector. This theory can be written equivalently as one of a light scalar that is coupled to the Standard Model of particle physics with a particular combination of Higgs‐portal couplings. When the conformal coupling function contains terms that are linear and quadratic in the conformally coupled scalar, we find that the effective mass of the light propagating mode and its coupling to matter fields, obtained after expanding around a minimum of the classical potential, depend on the energy density of the background environment. This is despite the absence of nonlinear terms in the original equation of motion for the light conformally coupled field. Instead, we find that the nonlinearities of the prototype Higgs potential are communicated to the light mode. In this way, we present a novel realization of screening mechanisms, in which light degrees of freedom coupled to the Standard Model are able to avoid experimental constraints through environmental and thin‐shell effects.
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