Zobrazeno 1 - 10
of 4 883
pro vyhledávání: '"Chong, Y."'
Autor:
Zheng, Xu, Chong, Y. D.
Exceptional points (EPs) are singularities in the parameter space of a non-Hermitian system where eigenenergies and eigenstates coincide. They hold promise for enhancing sensing applications, but this is limited by the divergence of shot noise near E
Externí odkaz:
http://arxiv.org/abs/2410.08502
Autor:
Banerjee, Rimi, Mandal, Subhaskar, Terh, Yun Yong, Lin, Shuxin, Liu, Gui-Geng, Zhang, Baile, Chong, Y. D.
We show that a non-Hermitian lattice with a disclination can host topological disclination states that are induced by on-site gain and loss. The disclination states are inherently non-Hermitian as they do not exist in the limit of zero gain/loss. The
Externí odkaz:
http://arxiv.org/abs/2406.03455
Publikováno v:
Phys. Rev. B 110, 134317 (2024)
Among the most intriguing features of non-Hermitian (NH) systems is the ability of complex energies to form braids under parametric variation. Several braiding behaviors, including link and knot formation, have been observed in experiments on synthet
Externí odkaz:
http://arxiv.org/abs/2406.00726
Autor:
Yu, Letian, Xue, Haoran, Guo, Ruixiang, Chan, Eng Aik, Terh, Yun Yong, Soci, Cesare, Zhang, Baile, Chong, Y. D.
Mass is commonly regarded as an intrinsic property of matter, but modern physics reveals particle masses to have complex origins, such as the Higgs mechanism in high-energy physics. In crystal lattices such as graphene, relativistic Dirac particles c
Externí odkaz:
http://arxiv.org/abs/2401.15528
We study a non-Hermitian variant of the (2+1)-dimensional Dirac wave equation, which hosts a real energy spectrum with pairwise-orthogonal eigenstates. In the spatially uniform case, the Hamiltonian's non-Hermitian symmetries allow its eigenstates to
Externí odkaz:
http://arxiv.org/abs/2304.10757
Publikováno v:
International Journal of Nanomedicine, Vol Volume 19, Pp 5493-5509 (2024)
Yang Chong,1,2 Dong Yu,1,2 Rui Han,3 Yanxu Li,2 Yali Gu,3 Zhaoyu Lu,1,2 Fengsong Nie,1,2 Lingli Wang,1 Hengmi Cui4 1Department of Traditional Chinese Medicine, The Affiliated Hospital of Yangzhou University, Yangzhou University, Yangzhou, Jiangsu, 22
Externí odkaz:
https://doaj.org/article/23d8d8a94ab44564b1fbdb9711042f26
Autor:
Im, H., Lee, D. U., Jo, Y., Kim, J., Chong, Y., Song, W., Kim, H., Kim, E. K., Sin, S. -J., Moon, S., Prance, J. R., Pashkin, Yu. A., Tsai, J. S.
When a magnetic moment is embedded in a metal, it captures itinerant electrons to form the Kondo cloud1,2, which can spread out over a few micrometres3,4. For a metal with dense magnetic impurities such that Kondo clouds overlap with each other, corr
Externí odkaz:
http://arxiv.org/abs/2301.09047
Autor:
Wang, Qiang, Chong, Y. D.
Publikováno v:
J. Opt. Soc. Am. B 40, 1443-1466 (2023)
Non-Hermitian photonic lattices combine the peculiar consequences of energy non-conservation with the physics of bandstructures, giving rise to a variety of exotic properties not found in conventional materials or photonic metamaterials. In this tuto
Externí odkaz:
http://arxiv.org/abs/2212.00307
Publikováno v:
Phys. Rev. Res. 5, 023044 (2023)
We study one-dimensional lattices with imaginary-valued Aubry-Andre-Harper (AAH) potentials. Such lattices can host edge states with purely imaginary eigenenergies, which differ from the edge states of the Hermitian AAH model and are stabilized by a
Externí odkaz:
http://arxiv.org/abs/2211.07853
In a Hermitian system, bound states must have quantized energies, whereas extended states can form a continuum. We demonstrate how this principle fails for non-Hermitian systems, by analyzing non-Hermitian continuous Hamiltonians with an imaginary mo
Externí odkaz:
http://arxiv.org/abs/2210.03738