论文标题
电磁异常在相对论重离子碰撞中存在电和手性磁导率的情况下
Electromagnetic anomaly in the presence of electric and chiral magnetic conductivities in relativistic heavy-ion collisions
论文作者
论文摘要
我们研究电$（\ textbf {e}）$和磁性$（\ textbf {b}）$字段的时空演变以及电磁异常$（\ textbf {e} \ cdot \ cdot \ cdot \ cdot \ cdot \ textbf {b}） $ \ sqrt {s _ {\ mathrm {nn}}}} = 200 $ 〜gev。通过与零电导率的Lienard-Wiechert溶液进行比较，我们观察到相对于反应平面的导电介质中电磁场的对称性破坏。引入电导率后，该场的衰减也会显着减速。对于$ \ textbf {e} \ cdot \ textbf {b} $以及$（\ textbf {e textbf {e} \ cdot \ cdot \ textbf {b}）的二极管结构，也发现了类似的效果碰撞。
We study the spacetime evolution of electric $(\textbf{E})$ and magnetic $(\textbf{B})$ fields along with the electromagnetic anomaly $(\textbf{E}\cdot\textbf{B})$ in the presence of electric ($σ$) and chiral magnetic ($σ_χ$) conductivities in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}=200$~GeV. By comparing to the Lienard-Wiechert solutions with zero conductivities, we observe a symmetry breaking of the electromagnetic field in a conducting medium with respect to the reaction plane. The decay of the field is also significantly decelerated after the conductivities are introduced. Similar effects are also found for the dipole structure of $\textbf{E}\cdot\textbf{B}$ as well as the quadrupole structure of $(\textbf{E}\cdot\textbf{B})\textbf{B}$, which may finally affect the charge separation of the elliptic flow coefficient of hadrons observed in high-energy nuclear collisions.
