Meson deformation by magnetic fields in lattice QCD
Meson deformation by magnetic fields in lattice QCD
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DOI：
10.1093/ptep/ptz023
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发表时间：
2019-01
影响因子：
3.5
通讯作者：
K. Hattori;A. Yamamoto
中科院分区：
文献类型：
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作者：
K. Hattori;A. Yamamoto
我们在格点QCD中研究了磁场中的轻介子性质，主要研究带电π介子和带电极化ρ介子。计算了规范不变的密度-密度算符，研究了磁场引起的形变。我们发现，这些介子获得拉长的形状沿沿着磁场。当磁场强度为非物理π介子质量平方的量级时，形变的幅度约为10- 20%。
We study light meson properties in a magnetic field, focusing on a charged pion and a charged and polarized rho meson, in lattice QCD. The gauge-invariant density-density correlators are calculated to investigate the deformation caused by the magnetic field. We find that these mesons acquire elongated shapes along the magnetic field. The magnitude of the deformation is about 10-20 % when the strength of the magnetic field is of the order of the squared unphysical pion mass.