标题： 热和磁介质中中性π介子质量的格点改进软墙AdS/QCD模型中的研究 显示英文标题

标题： Neutral pion masses within a hot and magnetized medium in a lattice-improved soft-wall AdS/QCD model

摘要： 我们研究了有限温度$T$和磁场$B$下手征相变以及中性介子的屏蔽质量、极点质量和热宽度，在一个通过拟合伪临界温度（ T_{\text{个人计算机}}(B) ）的格点改进的AdS/QCD模型中。具体来说，我们发现手征凝聚（\sigma ）经历了一个交叉相变，在固定有限$B$的情况下，分别在非常低和高温区域表现出显著的磁催化和逆磁催化效应。 对于筛选质量，我们发现纵向分量在非常低和高温下随$B$减小，并在$T_{\text{pc}}$附近随$B$增大。 横向分量在固定$T$时总是随$B$增大。 然而，在固定$B$时，纵向和横向筛选质量都随$T$增大。 此外，我们发现极质量随着$B$或$T$的增加而减小。 另外，值得注意的是，在非常高的温度区域，热宽表现出与纵向屏蔽质量相似的行为。 显示英文摘要

摘要： We investigate chiral phase transitions and the screening masses, pole masses, and thermal widths of neutral pion meson with finite temperature $T$ and magnetic field $B$ in a lattice-improved AdS/QCD model, which is constructed by fitting the lattice results of the pseudo-critical temperatures ( T_{\text{pc}}(B) ). Specifically, we have that the chiral condensate (\sigma) undergoes a crossover phase transition demonstrating distinct magnetic catalysis and inverse magnetic catalysis effects in very low and high-temperature regions with fixed finite $B$, respectively. For the screening masses, we find that the longitudinal component decreases with $B$ at very low and high temperatures and increases with $B$ near $T_{\text{pc}}$. The transverse component always increases with $B$ at fixed $T$. However, both the longitudinal and transverse screening masses increase with $T$ at fixed $B$. Furthermore, we find that the pole mass decreases with the increasing of $B$ or $T$. Besides, it is interesting to note that the thermal width shows similar behavior to the longitudinal screening masses in the very high temperature region.