Weyl fermion creation by cosmological gravitational wave background at 1-loop
Abstract Weyl fermions of spin 1 2 $$ \frac{1}{2} $$ minimally coupled to Einstein’s gravity in 4 dimensions cannot be produced purely gravitationally in an expanding Universe at tree level. Surprisingly, as we showed in a recent letter [1], this changes at gravitational 1-loop when cosmic perturbat...
| Main Authors: | , |
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| 格式: | 文件 |
| 语言: | English |
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SpringerOpen
2025-01-01
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| 丛编: | Journal of High Energy Physics |
| 主题: | |
| 在线阅读: | https://doi.org/10.1007/JHEP01(2025)023 |