Spin tensor and its role in non-equilibrium thermodynamics
- It is shown that the description of a relativistic fluid at local thermodynamic equilibrium depends on the particular quantum stress-energy tensor operator chosen, e.g., the canonical or symmetrized Belinfante stress-energy tensor. We argue that the Belinfante tensor is not appropriate to describe a relativistic fluid whose macroscopic polarization relaxes slowly to thermodynamic equilibrium and that a spin tensor, like the canonical spin tensor, is required. As a consequence, the description of a polarized relativistic fluid involves an extension of relativistic hydrodynamics including a new antisymmetric rank-two tensor as a dynamical field. We show that the canonical and Belinfante tensors lead to different predictions for measurable quantities such as spectrum and polarization of particles produced in relativistic heavy-ion collisions.
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| Author: | Francesco BecattiniORCiDGND, Wojciech FlorkowskiORCiDGND, Enrico SperanzaORCiDGND |
|---|---|
| URN: | urn:nbn:de:hebis:30:3-546700 |
| DOI: | https://doi.org/10.1016/j.physletb.2018.12.016 |
| ISSN: | 1873-2445 |
| ISSN: | 0370-2693 |
| Parent Title (English): | Physics Letters B |
| Publisher: | Elsevier |
| Place of publication: | Amsterdam [u.a.] |
| Document Type: | Article |
| Language: | English |
| Date of Publication (online): | 2018/12/18 |
| Date of first Publication: | 2018/12/18 |
| Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
| Release Date: | 2020/05/14 |
| Volume: | 789.2019 |
| Page Number: | 7 |
| First Page: | 419 |
| Last Page: | 425 |
| HeBIS-PPN: | 465583415 |
| Institutes: | Physik / Physik |
| Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Creative Commons - Namensnennung 4.0 |
