arXiv:2407.14345·v3·High Energy Physics — Phenomenology
Emergent Canonical Spin Tensor in the Chiral-Symmetric Hot QCD
M. Buzzegoli (Iowa State University and West University of Timisoara)🇺🇸 · A. Palermo (Stony Brook)🇺🇸
Abstract
The spin tensor is fundamental to relativistic spin hydrodynamics, but its definition is ambiguous due to the pseudogauge symmetry. We show that this ambiguity can be solved in interacting field theories. We prove that the mean-field limit of a modified Nambu-Jona-Lasinio model with spin-spin interactions is equivalent to nondissipative spin hydrodynamics with a canonical spin tensor.
Comments: 5 pages, comments welcome. v2: updated discussion. v3: version accepted for publication