Probe Majorana zero modes through their spins

• 来源期刊: 国家科学评论（英文版）
• 年，卷（期）: 2019,（2）
• 页码范围: 197-199
• 页数: 3页
• 语种: 英文
• DOI: 10.1093/nsr/nwy152

摘要

MAJORANA PARTICLE VS.MAJORANA MODE A Majorana particle is a fermion that is identical to its own antiparticle.Majorana fermions are named after Ettore Majorana, who predicted this type of particle in 1937 [1].He suggested that charge-neutral spin-1/2 particles can be described by a real wave equation as opposed to the Dirac equation, which is a complex wave equation, and proposedthat neutrinos are particles of such a type.Since the particle-antiparticle transformation will change the sign of the charge,a Majorana particle must be charge neutral.To the best of our knowledge, all the standard model fermions in particle physics are known as Dirac fermions, except the neutrino.The latter maybe either a Dirac or a Majorana fermion, and the issue has not yet been settled [2].