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physics.optics2022★ 7 cited
Revisit the Poynting vector in PT-symmetric coupled waveguides
Xin-Zhe Zhang, Ru-Zhi Luo, Jing Chen
We show that the time-averaged Poynting vector in parity-time (PT ) symmetric coupled waveguides is always positive and cannot explain the stopped light at exceptional points (EPs)…
hep-th2022★ 6 cited
Mimetic Curvaton
Xin-zhe Zhang, Lei-hua Liu, Taotao Qiu
In this paper, we investigate the primordial perturbations of inflation model induced from the multi-field mimetic gravity, where there are two field during inflation, and thus bot…