تقرير
Real effective potentials for phase transitions in models with extended scalar sectors
| العنوان: | Real effective potentials for phase transitions in models with extended scalar sectors |
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| المؤلفون: | Seller, Károly, Szép, Zsolt, Trócsanyi, Zoltán |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology |
| الوصف: | The effective potential obtained by loop expansion is usually not real in the range of field values explored by its minima during a phase transition. We apply the optimized perturbation theory in a fixed gauge to singlet scalar extensions of the Standard Model in order to calculate a one-loop effective potential that is real by construction. We test this computational scheme by comparing such a potential obtained in Landau gauge to that derived based on the Higgs pole mass. We carry out the latter construction by imposing physical renormalization conditions, which yields a potential without residual regularization scale dependence. We use our effective potential to study the parameter dependence of the critical temperatures in a two-step phase transition of the form $(0,0)\to (0,w')\to (v,w)$ that occurs for decreasing temperature in scalar extensions of the SM with two vacuum expectation values $v$ and $w$. Comment: 36 pages, 8 figures; references added, published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP04(2023)096 |
| URL الوصول: | http://arxiv.org/abs/2301.07961 |
| رقم الأكسشن: | edsarx.2301.07961 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP04(2023)096 |
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