论文标题
肠状量表模型的光谱
The spectrum of GUT-like gauge-scalar models
论文作者
论文摘要
过去的晶格模拟试探性地表明，BSM理论中可观察到的颗粒的光谱在质量上与扰动性的预期不同。差异可以追溯到量规不变性的要求引起的非平凡的场理论效应。直接与结合状态（Fröhlich，Morchio和Strocchi提出的）直接使用的扰动但量规不变的方法可以通过允许在扰动框架内处理复合状态效应来提供解决方案。我们考虑一种玩具态的理论 - SU（3）Yang-Mills与基本代表中的标量“ higgs”结合在一起 - 并通过提供迄今为止最全面的光谱范围来扩展先前的工作，包括所有频道，包括所有频道2。通过Fröhlich-Morchio-Strocchi方法进行BSM模型构建。
Past lattice simulations tentatively suggested that the spectrum of observable particles in BSM theories is qualitatively different than perturbatively expected. The discrepancy can be traced back to nontrivial field-theoretical effects arising from the requirement of gauge invariance. A perturbative but gauge-invariant approach working directly with bound states (as proposed by Fröhlich, Morchio and Strocchi) could provide a solution, by allowing composite-state effects to be treated within a perturbative framework. We consider a toy GUT-like theory -- SU(3) Yang-Mills coupled to a scalar `Higgs' in the fundamental representation -- and expand on previous work by providing the most comprehensive spectroscopy to date, including all channels up to spin 2. Our results strongly support the general conclusion that the elementary spectrum is not an adequate proxy for the low-energy spectrum of a GUT, and also suggest a possible analytical approach to BSM model-building via the Fröhlich-Morchio-Strocchi approach.
