Evolution of the Primordial Axial Charge across Cosmic Times
Research output: Contribution to journal › Letter › Research › peer-review
Documents
- PhysRevLett.126.021801
Final published version, 334 KB, PDF document
We investigate collisional decay of the axial charge in an electron-photon plasma at temperatures 10 MeV-100 GeV. We demonstrate that the decay rate of the axial charge is first order in the fine-structure constant Gamma(flip) proportional to am(e)(2)/T and thus orders of magnitude greater than the naive estimate which has been in use for decades. This counterintuitive result arises through infrared divergences regularized at high temperature by environmental effects. The decay of axial charge plays an important role in the problems of leptogenesis and cosmic magnetogenesis.
Original language | English |
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Article number | 021801 |
Journal | Physical Review Letters |
Volume | 126 |
Issue number | 2 |
Number of pages | 6 |
ISSN | 0031-9007 |
DOIs | |
Publication status | Published - 11 Jan 2021 |
- MAGNETIC-FIELDS, QUASI-PARTICLES, EQUILIBRIUM
Research areas
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