论文标题
强烈磁场中的单个光子的Di-Lepton生产：真空二色性
Di-lepton production from a single photon in strong magnetic fields: Vacuum dichroism
论文作者
论文摘要
我们在存在强恒定磁场的情况下研究从单个光子的Di-Lepton产生。通过使用RITUS-BASIS形式主义，我们通过分析评估光子至二勒普顿转换顶点，并完全考虑到产生的费米子与强磁场之间的非扰动相互作用。我们表明，Di-Lepton光谱相对于磁场方向变为各向异性，并取决于光子极化，作为在强磁场中真空二色性的表现。根据在存在Landau量化的情况下的能量保存，不仅会离散化产生的费米子的横向动量，而且纵向动量也被离散化，并且Di-Lepton Spectrum Spectrum Spike结构表现为入射光子能量的功能和磁场强度。我们还表明，在最低的兰道水平上，严格禁止使用Di-Lepton的生产，以作为所谓的螺旋性抑制的类似物。
We study di-lepton production from a single photon in the presence of a strong constant magnetic field. By the use of the Ritus-basis formalism, we analytically evaluate the photon--to--di-lepton conversion vertex with fully taking into account the non-perturbative interactions between the produced fermions and the strong magnetic field. We show that the di-lepton spectrum becomes anisotropic with respect to the magnetic-field direction and depends on the photon polarization as a manifestation of the vacuum dichroism in a strong magnetic field. According to the energy conservation in the presence of the Landau quantization, not only the transverse momentum of the produced fermions but also the longitudinal momentum is discretized, and the di-lepton spectrum exhibits spike structures as functions of the incident photon energy and the magnetic field strength. We also show that the di-lepton production is strictly prohibited for massless fermions in the lowest Landau levels as an analogue of the so-called helicity suppression.
