{"paper":{"title":"Shear Viscosity of Quark-Gluon Plasma in Weak Magnetic Field in Perturbative QCD: Leading Log","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Ho-Ung Yee, Shiyong Li","submitted_at":"2017-07-04T01:21:11Z","abstract_excerpt":"We compute the shear viscosity of two-flavor QCD plasma in an external magnetic field in perturbative QCD at leading log order, assuming that the magnetic field is weak or soft: $eB\\sim g^4\\log(1/g)T^2$. We show that the shear viscosity takes a form $\\eta=\\bar\\eta(\\bar B)T^3/(g^4\\log(1/g))$ with a dimensionless function $\\bar\\eta(\\bar B)$ in terms of a dimensionless variable $\\bar B=(eB)/(g^4\\log(1/g)T^2)$. The variable $\\bar B$ corresponds to the relative strength of the effect of cyclotron motions compared to the QCD collisions: $\\bar B\\sim l_{mfp}/l_{cyclo}$. We provide a full numerical res"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.00795","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}