Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma. / Boyarsky, A.; Cheianov, V. V.; Ruchayskiy, O.; Sobol, O.

In: Physical Review D, Vol. 103, No. 1, 013003, 11.01.2021.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Boyarsky, A, Cheianov, VV, Ruchayskiy, O & Sobol, O 2021, 'Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma', Physical Review D, vol. 103, no. 1, 013003. https://doi.org/10.1103/PhysRevD.103.013003

APA

Boyarsky, A., Cheianov, V. V., Ruchayskiy, O., & Sobol, O. (2021). Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma. Physical Review D, 103(1), [013003]. https://doi.org/10.1103/PhysRevD.103.013003

Vancouver

Boyarsky A, Cheianov VV, Ruchayskiy O, Sobol O. Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma. Physical Review D. 2021 Jan 11;103(1). 013003. https://doi.org/10.1103/PhysRevD.103.013003

Author

Boyarsky, A. ; Cheianov, V. V. ; Ruchayskiy, O. ; Sobol, O. / Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma. In: Physical Review D. 2021 ; Vol. 103, No. 1.

Bibtex

@article{af28dc668c614991979e7b1d53ac8784,
title = "Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma",
abstract = "We calculate the rate of collisional decay of the axial charge in an ultrarelativistic electron-positron plasma, also known as the chirality flipping rate. We find that contrary to the existing estimates, the chirality flipping rate appears already in the first order in the fine-structure constant alpha and is therefore orders of magnitude greater than previously believed. The main channels for the rapid relaxation of the axial charge are the collinear emission of a weakly damped photon and the Compton scattering. The latter contributes to the O(alpha) result because of the infrared divergence in its cross section, which is regularized on the soft scale similar to eT due to the thermal corrections. Our results are important for the description of the early Universe processes (such as leptogenesis or magnetogenesis) that affect differently left- and right-chiral fermions of the Standard Model, as discussed in more details in the companion Letter.",
keywords = "PRIMORDIAL MAGNETIC-FIELDS, TRANSPORT-COEFFICIENTS, QUASI-PARTICLES, CONDUCTIVITY",
author = "A. Boyarsky and Cheianov, {V. V.} and O. Ruchayskiy and O. Sobol",
year = "2021",
month = jan,
day = "11",
doi = "10.1103/PhysRevD.103.013003",
language = "English",
volume = "103",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "1",

}

RIS

TY - JOUR

T1 - Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma

AU - Boyarsky, A.

AU - Cheianov, V. V.

AU - Ruchayskiy, O.

AU - Sobol, O.

PY - 2021/1/11

Y1 - 2021/1/11

N2 - We calculate the rate of collisional decay of the axial charge in an ultrarelativistic electron-positron plasma, also known as the chirality flipping rate. We find that contrary to the existing estimates, the chirality flipping rate appears already in the first order in the fine-structure constant alpha and is therefore orders of magnitude greater than previously believed. The main channels for the rapid relaxation of the axial charge are the collinear emission of a weakly damped photon and the Compton scattering. The latter contributes to the O(alpha) result because of the infrared divergence in its cross section, which is regularized on the soft scale similar to eT due to the thermal corrections. Our results are important for the description of the early Universe processes (such as leptogenesis or magnetogenesis) that affect differently left- and right-chiral fermions of the Standard Model, as discussed in more details in the companion Letter.

AB - We calculate the rate of collisional decay of the axial charge in an ultrarelativistic electron-positron plasma, also known as the chirality flipping rate. We find that contrary to the existing estimates, the chirality flipping rate appears already in the first order in the fine-structure constant alpha and is therefore orders of magnitude greater than previously believed. The main channels for the rapid relaxation of the axial charge are the collinear emission of a weakly damped photon and the Compton scattering. The latter contributes to the O(alpha) result because of the infrared divergence in its cross section, which is regularized on the soft scale similar to eT due to the thermal corrections. Our results are important for the description of the early Universe processes (such as leptogenesis or magnetogenesis) that affect differently left- and right-chiral fermions of the Standard Model, as discussed in more details in the companion Letter.

KW - PRIMORDIAL MAGNETIC-FIELDS

KW - TRANSPORT-COEFFICIENTS

KW - QUASI-PARTICLES

KW - CONDUCTIVITY

U2 - 10.1103/PhysRevD.103.013003

DO - 10.1103/PhysRevD.103.013003

M3 - Journal article

VL - 103

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 1

M1 - 013003

ER -

ID: 256940100