SciPost Submission Page
Hydrodynamics of spin currents
by Domingo Gallegos, Umut Gursoy, Amos Yarom
This Submission thread is now published as
Submission summary
| Authors (as registered SciPost users): | Umut Gürsoy · Amos Yarom |
| Submission information | |
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| Preprint Link: | https://arxiv.org/abs/2101.04759v3 (pdf) |
| Date accepted: | Aug. 4, 2021 |
| Date submitted: | July 28, 2021, 12:12 a.m. |
| Submitted by: | Umut Gürsoy |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Theoretical |
Abstract
We study relativistic hydrodynamics in the presence of a non vanishing spin chemical potential. Using a variety of techniques we carry out an exhaustive analysis, and identify the constitutive relations for the stress tensor and spin current in such a setup, allowing us to write the hydrodynamic equations of motion to second order in derivatives. We then solve the equations of motion in a perturbative setup and find surprisingly good agreement with measurements of global $\Lambda$-hyperon polarization carried out at RHIC.
Author comments upon resubmission
This is resubmitted from v3 of the draft on the arXiv.
List of changes
- Added reference to Bjorken's original paper.
- Added a sentence in the last paragraph of section 4 to explain that the the new transport coefficients play a crucial role in obtaining a nonvanishing polarization of Lambda hyperons.
- Added a sentence referring to extensions of the BDN/K hyrodynamics frame as possible outlook.
- Corrected a typo below equation (7) ‘parameteric’ to ‘parametric’
- Replaced subscript 'i' for the ideal currents with 'id' for clarity
- Defined $\tilde m_{ab}$ in eq. (11b) below it.
- Corrected a typo in Eq. (11b) and in (12).
- Added a new equation (13) to clarify our definitions.
Published as SciPost Phys. 11, 041 (2021)
Reports on this Submission
Report #1 by Michal P. Heller (Referee 1) on 2021-7-28 (Invited Report)
Report
The paper is good to go as it is.