Zobrazeno 1 - 10
of 208
pro vyhledávání: '"Shi-Dong Liang"'
Autor:
Shi-Dong Liang
Publikováno v:
Physics, Vol 6, Iss 3, Pp 945-963 (2024)
Based on the position and momentum of noncommutative relations with a noncanonical map, we study the Dirac equation and analyze its parity and time reversal symmetries in a noncommutative phase space. Noncommutative parameters can be endowed with the
Externí odkaz:
https://doaj.org/article/10194ac71d8641a197411e0829f9fa5a
Autor:
Shi-Dong Liang, Matthew J. Lake
Publikováno v:
Physics, Vol 5, Iss 2, Pp 436-460 (2023)
Noncommutativity in physics has a long history, tracing back to classical mechanics. In recent years, many new developments in theoretical physics, and in practical applications rely on different techniques of noncommutative algebras. In this review,
Externí odkaz:
https://doaj.org/article/fe34a4792bea4383bbf07439d5c8e87d
Publikováno v:
AAPPS Bulletin, Vol 32, Iss 1, Pp 1-10 (2022)
Abstract Non-Hermitian quantum systems exhibit many novel physical properties of quantum states. We consider a non-Hermtian graphene model based on the tight-binding approximation with the coupling of the graphene and the substrate. We analyze the co
Externí odkaz:
https://doaj.org/article/c9eef002971a4185b37a051e8eecd1bd
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
Externí odkaz:
https://doaj.org/article/2a58523e0eb2483c8307c9b0981c1911
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
Externí odkaz:
https://doaj.org/article/5d806fb1f58d485087bf4c662ada9661
Publikováno v:
Frontiers in Astronomy and Space Sciences, Vol 10 (2023)
We present a simple gedanken experiment in which a compact object traverses a spacetime with three macroscopic spatial dimensions and n compact dimensions. The compactification radius is allowed to vary, as a function of the object’s position in th
Externí odkaz:
https://doaj.org/article/ba653782a67246f88a8c2c8a809bfb5f
Publikováno v:
Physics, Vol 5, Iss 3, Pp 688-689 (2023)
Presently, we are in a period of rapid and intensive changes in our understanding of the gravitational interaction, triggered by the important observational findings of the late 1990s [...]
Externí odkaz:
https://doaj.org/article/b01365e4b98a44a4a7d72f0b3eaecb95
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 81, Iss 2, Pp 1-19 (2021)
Abstract We consider the geodesic deviation equation, describing the relative accelerations of nearby particles, and the Raychaudhuri equation, giving the evolution of the kinematical quantities associated with deformations (expansion, shear and rota
Externí odkaz:
https://doaj.org/article/87b8e1e56fc04e1089fadaebbd85baf9
Publikováno v:
European Physical Journal C: Particles and Fields, Vol 80, Iss 5, Pp 1-22 (2020)
Abstract We consider an f(Q, T) type gravity model in which the scalar non-metricity $$Q_{\alpha \mu \nu }$$ Qαμν of the space-time is expressed in its standard Weyl form, and it is fully determined by a vector field $$w_{\mu }$$ wμ . The field e
Externí odkaz:
https://doaj.org/article/96e974ca50794b5da98897851c271b8b
Autor:
Shi-Dong Liang
Publikováno v:
Symmetry, Vol 15, Iss 2, p 367 (2023)
We extend the three-dimensional noncommutative relations of the position and momentum operators to those in the four dimension. Using the Seiberg-Witten (SW) map, we give the Heisenberg representation of these noncommutative algebras and endow the no
Externí odkaz:
https://doaj.org/article/366a590ea10243c8b5a3924f5d8d0d38