论文标题
狄拉克材料，扭转和非常规超对称的时间环
Time-loops in Dirac materials, torsion and unconventional Supersymmetry
论文作者
论文摘要
我们提出了一个场景，即在低能量处的二维狄拉克材料中，可以通过与此类脱位产生的扭转的完全反对称成分成比例的顶点来描述脱位的效果。在这种二维设置中具有非零的扭转项的众所周知的几何阻塞可以通过巧妙操纵的粒子孔动力学获得的异国情调时环克服。如果确实存在这样的扭转/错位，则可以推断并可能测量颗粒 - 抗粒子（孔）的净流动。最后，我们评论了这些发现如何铺平实验室实现非常规超对称性材料的方式，这是对具有非零扭转背景的$π$ - 电子的自上而下的描述。
We propose a scenario where the effects of dislocations, in bidimensional Dirac materials at low energies, can be described within a Dirac field theory by a vertex proportional to the totally antisymmetric component of the torsion generated by such dislocations. The well-known geometrical obstruction to have a nonzero torsion term of that kind in this two-dimensional settings is overcome through exotic time-loops, obtained from ingeniously manipulated particle-hole dynamics. If such torsion/dislocation is indeed present, a net flow of particles-antiparticles (holes) can be inferred and possibly measured. Finally, we comment on how these discoveries pave the way to a laboratory realization on Dirac materials of Unconventional Supersymmetry, as a top-down description of the $π$-electrons in backgrounds with a nonzero torsion.
