arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1208.3592hep-phhep-lat
收藏

高斯有效势中的费米子:Higgs-Top扇区

Incorporating fermions in the Gaussian Effective Potential: the Higgs-Top Sector

Fabio Siringo

摘要:

Higgs-Top模型的研究通过非微扰变分扩展的高斯有效势,包括费米子。在一个非常强的Yukawa耦合的限制,单圈的结果示出遵循单参数缩放,而高斯波动引起重要的偏差缩放和减少的VEV和顶部质量。一个很好的一般协议被发现与晶格数据时,可以进行比较。真空是稳定的任何选择的汤川耦合,在方差与重整化微扰理论。分析结果提供了一些可观的希格斯玻色子的重整化质量和它的波函数重整化常数。扩展规范理论,如QCD简要讨论。

英文摘要:

The Higgs-Top model is studied by a non-perturbative variational extension of the Gaussian Effective Potential that incorporates fermions. In the limit of a very strong Yukawa coupling the one-loop result is shown to follow a single-parameter scaling while the gaussian fluctuations give rise to important deviations from scaling and to a reduction of the vev and of the top mass. A good general agreement is found with lattice data when a comparison can be made. The vacuum is shown to be stable for any choice of the Yukawa coupling, at variance with renormalized perturbation theory. Analytical results are provided for few observables like the renormalized mass of the Higgs boson and its wave function renormalization constant. Extensions to gauge theories like QCD are briefly discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑