超塑性晶体中的涌现引力
Emergent gravity in superplastic crystals
AI总结:
本文研究超塑性晶体中的涌现引力,通过费米子与引力耦合,证明应力-能量张量的非对角分量在体积积分下为拓扑不变量,平衡时不受平滑修改影响。
摘要:
我们讨论超塑性晶体中的涌现引力。我们局限于考虑与引力耦合的费米子。引力本身要么是黎曼的(无挠率),要么是远平行的(无曲率)。我们证明,在这种情况下,应力-能量张量的非对角分量在整个体积上积分时是拓扑不变量。在平衡状态下,如果系统被平滑修改,它们的值不会改变。
英文摘要:
We discuss emergent gravity in the superplastic crystals. We restrict ourselves by the consideration of fermions coupled to gravity. Gravity itself is either Riemannian (without torsion) or teleparallel (no curvature). We demonstrate that in this case the off - diagonal components of stress - energy tensor, being integrated over the whole volume, are topological invariants. In equilibrium their values are not changed if the system is modified smoothly.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。