Pseudo-Nambu-Goldstone inflation with twin waterfalls
We propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for the graceful exit from inflation by a waterfall transition. In this scenario, the Z2 symmetry for the waterfall fields and the inflaton protects the inflaton potential against danger...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2022-11-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269322006177 |
| _version_ | 1828141173490843648 |
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| author | Hyun Min Lee Adriana G. Menkara |
| author_facet | Hyun Min Lee Adriana G. Menkara |
| author_sort | Hyun Min Lee |
| collection | DOAJ |
| description | We propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for the graceful exit from inflation by a waterfall transition. In this scenario, the Z2 symmetry for the waterfall fields and the inflaton protects the inflaton potential against dangerous quantum corrections coming from the waterfall couplings. We show that there is a wide range of natural model parameters and initial conditions for a successful inflation and discuss the reheating process by the perturbative decay of the waterfall field with a Z2 invariant Higgs portal. We also present a microscopic model for the inflaton couplings to the twin waterfall fields in the context of a dark QCD with light and heavy quarks. |
| first_indexed | 2024-04-11T19:20:01Z |
| format | Article |
| id | doaj.art-805663405cc04d0d9c0b092570153879 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-11T19:20:01Z |
| publishDate | 2022-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-805663405cc04d0d9c0b0925701538792022-12-22T04:07:19ZengElsevierPhysics Letters B0370-26932022-11-01834137483Pseudo-Nambu-Goldstone inflation with twin waterfallsHyun Min Lee0Adriana G. Menkara1Corresponding author.; Department of Physics, Chung-Ang University, Seoul 06974, Republic of KoreaDepartment of Physics, Chung-Ang University, Seoul 06974, Republic of KoreaWe propose a pseudo-Nambu-Goldstone inflation where twin waterfall fields coupled to the inflaton are responsible for the graceful exit from inflation by a waterfall transition. In this scenario, the Z2 symmetry for the waterfall fields and the inflaton protects the inflaton potential against dangerous quantum corrections coming from the waterfall couplings. We show that there is a wide range of natural model parameters and initial conditions for a successful inflation and discuss the reheating process by the perturbative decay of the waterfall field with a Z2 invariant Higgs portal. We also present a microscopic model for the inflaton couplings to the twin waterfall fields in the context of a dark QCD with light and heavy quarks.http://www.sciencedirect.com/science/article/pii/S0370269322006177 |
| spellingShingle | Hyun Min Lee Adriana G. Menkara Pseudo-Nambu-Goldstone inflation with twin waterfalls Physics Letters B |
| title | Pseudo-Nambu-Goldstone inflation with twin waterfalls |
| title_full | Pseudo-Nambu-Goldstone inflation with twin waterfalls |
| title_fullStr | Pseudo-Nambu-Goldstone inflation with twin waterfalls |
| title_full_unstemmed | Pseudo-Nambu-Goldstone inflation with twin waterfalls |
| title_short | Pseudo-Nambu-Goldstone inflation with twin waterfalls |
| title_sort | pseudo nambu goldstone inflation with twin waterfalls |
| url | http://www.sciencedirect.com/science/article/pii/S0370269322006177 |
| work_keys_str_mv | AT hyunminlee pseudonambugoldstoneinflationwithtwinwaterfalls AT adrianagmenkara pseudonambugoldstoneinflationwithtwinwaterfalls |