Published in arxiv, 2022
Band-crossing points and conducting surface states can be hard to compute for realistic systems. We adopt a random matrix model from previous work to compute the statistics of these topological properties
Recommended citation: Lin, Hung-Hwa, et al. "Fluctuation of Chern Numbers in a Parametric Random Matrix Model." arXiv preprint arXiv:2207.12562 (2022). https://arxiv.org/abs/2207.12562
Published in arxiv, 2022
There has yet to be an operationally meaningful entanglement measure for mixed many-body states. We show that a recently formulated measure, the positive-parital-transpose (PPT) entanglement cost, is equal to negativity for some topological stabilizer models, providing the first operational meaning to their mixed state entanglement measure.
Recommended citation: Lu, Tsung-Cheng, En-Jui Kuo, and Hung-Hwa Lin. "Entanglement cost in topological stabilizer models at finite temperature." arXiv preprint arXiv:2201.08382 (2022). https://arxiv.org/abs/2201.08382
Published in Physical Review D, 2018
We tested the equivalence between the newly discovered symmetry, the extended BMS symmetry, and the ordinary on-shell gauge symmetry, by computing scattering amplitudes as thought experiments.
Recommended citation: Li, Zhi-Zhong, Hung-Hwa Lin, and Shun-Qing Zhang. "Infinite soft theorems from gauge symmetry." Physical Review D 98.4 (2018): 045004. https://journals.aps.org/prd/abstract/10.1103/PhysRevD.98.045004
Published in JHEP, 2017, 2017
Symmetry information can be extracted from soft limit of scattering amplitudes. We explore the double soft limit, with two soft particles, and show that additional information is extracted compared to single soft theorems.
Recommended citation: Li, Zhi-Zhong, Hung-Hwa Lin, and Shun-Qing Zhang. "On the symmetry foundation of double soft theorems." Journal of High Energy Physics 2017.12 (2017): 1-45. https://link.springer.com/article/10.1007/JHEP12(2017)032