تقرير
Polarization of spin-1/2 particles with effective spacetime dependent masses
| العنوان: | Polarization of spin-1/2 particles with effective spacetime dependent masses |
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| المؤلفون: | Bhadury, Samapan, Das, Arpan, Florkowski, Wojciech, K., Gowthama K., Ryblewski, Radoslaw |
| المصدر: | Phys. Lett. B 849 (2024) 138464 |
| سنة النشر: | 2023 |
| المجموعة: | High Energy Physics - Phenomenology Nuclear Theory |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Nuclear Theory |
| الوصف: | Semiclassical expansion of the Wigner function for spin-1/2 fermions having an effective spacetime-dependent mass is used to analyze spin-polarization effects. The existing framework is reformulated to obtain a differential equation directly connecting the particle spin tensor with the effective mass. It reflects the conservation of the total angular momentum in a system. In general, we find that the gradients of mass act as a source of the spin polarization. Although this effect is absent for simple boost-invariant dynamics, an extension to non-boost-invariant systems displays a non-trivial dependence of the spin density on the mass indicating that the spin polarization effects may be intertwined with the phenomenon of chiral restoration. Comment: 5 pages, 2 figures, matches with the published version Phys. Lett. B 849 (2024) 138464 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1016/j.physletb.2024.138464 |
| URL الوصول: | http://arxiv.org/abs/2307.12436 |
| رقم الأكسشن: | edsarx.2307.12436 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1016/j.physletb.2024.138464 |
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