论文标题
抗fiferromagnet中的相对论域壁发射
Pair emission from a relativistic domain wall in antiferromagnets
论文作者
论文摘要
理论上研究了抗fiferromagnet中恒定速度下的相对论域壁发射和激发。由于二次镁耦合而引起的一对发射显示为主导。该发射在共同的框架中对应于由洛伦兹增强异常响应函数的零能量不稳定引起的真空极化。排放速率对磁通分散和壁曲线很敏感，并且对于接近有效光速的较薄壁的薄壁可显着增强。计算由于低速下的镁激发而引起的欧姆阻尼常数。
Magnon emission and excitation by a relativistic domain wall at a constant velocity in antiferromagnet is theoretically studied. A pair emission due to a quadratic magnon coupling is shown to be dominant. The emission corresponds in the comoving frame to a vacuum polarization induced by a zero-energy instability of the Lorentz-boosted anomalous response function. The emission rate is sensitive to the magnon dispersion and wall profile, and is significantly enhanced for a thin wall with velocity close to the effective light velocity. The Ohmic damping constant due to magnon excitation at low velocity is calculated.
