Gauge-invariant Higgs boson mass bounds from the physical effective potential

被引：13

作者：

Boyanovsky, D ^{[1
]}

Loinaz, W ^{[1
]}

Willey, RS ^{[1
]}

机构：

[1] Univ Pittsburgh, Dept Phys & Astron, Pittsburgh, PA 15260 USA

来源：

PHYSICAL REVIEW D | 1998年 / 57卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.57.100

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study a simplified version of the standard electroweak model and introduce the concept of the physical gauge-invariant effective potential in terms of matrix elements of the Hamiltonian in physical states. This procedure allows an unambiguous identification of the symmetry breaking order parameter and the resulting effective potential as the energy in a constrained state. We explicitly compute the physical effective potential at one loop order and improve it using the renormalization group. This construction allows us to extract a reliable, gauge-invariant bound on the scalar mass by unambiguously obtaining the scale at which new physics should emerge to preclude vacuum instability. Comparison is made with popular gauge-fixing procedures and an "error" estimate is provided between the Landau gauge-fixed and the gauge-invariant results. [S0556-2821(98)05901-3].

引用

页码：100 / 111

页数：12

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