Gravitational waves from conformal symmetry breaking

被引：73

作者：

Prokopec, Tomislav ^{[1
,2
]}

Rezacek, Jonas ^{[1
,2
]}

Swiezewska, Bogumila ^{[1
,2
]}

机构：

[1] Univ Utrecht, Inst Theoret Phys, Spinoza Inst, Princetonpl 5, NL-3584 CC Utrecht, Netherlands

[2] Univ Utrecht, EMME, Princetonpl 5, NL-3584 CC Utrecht, Netherlands

来源：

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2019年 / 02期

关键词：

cosmological phase transitions; cosmology of theories beyond the SM; gravitational waves / theory; particle physics - cosmology connection; FINITE-TEMPERATURE; FLUCTUATION CORRECTIONS; ELECTROWEAK HIGGS; PHASE-TRANSITION; RADIATION; BUBBLES; GAUGE; BOSON;

D O I：

10.1088/1475-7516/2019/02/009

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We consider the electroweak phase transition in the conformal extension of the standard model known as SU(2)cSM. Apart from the standard model particles, this model contains an additional scalar and a gauge field that are both charged under the hidden SU(2)(X). This model generically exhibits a very strong phase transition that proceeds after a large amount of supercooling. We estimate the gravitational wave spectrum produced in this model and show that its amplitude and frequency fall within the observational window of LISA. We also discuss potential pitfalls and relevant points of improvement required to attain reliable estimates of the gravitational wave production in this - as well as in more general - class of models. In order to improve perturbativity during the early stages of transition that ends with bubble nucleation, we solve a thermal gap equation in the scalar sector inspired by the 2PI effective action formalism.

引用

页数：32

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