Zobrazeno 1 - 10
of 616
pro vyhledávání: '"superradiant"'
Autor:
Pornthep Pongchalee, Brian W.J. McNeil
Publikováno v:
Results in Physics, Vol 60, Iss , Pp 107673- (2024)
A study is made of the saturation mechanism of a single superradiant ‘spike’ of radiation in a Free Electron Laser. A one-dimensional (1D) computer model is developed using the Puffin, un-averaged FEL simulation code, which allows sub-radiation w
Externí odkaz:
https://doaj.org/article/3aa47454c9c24d52a3dc837190755fb2
Publikováno v:
AAPPS Bulletin, Vol 33, Iss 1, Pp 1-17 (2023)
Abstract The atomic clocks, whether operating at optical or microwave region, can be divided into two categories according to their working mode, namely the passive clocks and active clocks. The passive clocks, whose standard frequency is locked to a
Externí odkaz:
https://doaj.org/article/96db626b05d64e5dad0faf44325bd495
Autor:
You-Qi Lu, Yu-Yu Zhang
Publikováno v:
New Journal of Physics, Vol 26, Iss 6, p 063010 (2024)
Quantum tricriticality, a unique form of high-order criticality, is expected to exhibit fascinating features including unconventional critical exponents and universal scaling laws. However, a quantum tricritical point (QTCP) is much harder to access,
Externí odkaz:
https://doaj.org/article/c0f4c157726f40cab0a23ac82bdb4289
Autor:
Anna Bychek, Helmut Ritsch
Publikováno v:
New Journal of Physics, Vol 25, Iss 11, p 113010 (2023)
The implementation of a superradiant laser as an active frequency standard is predicted to provide better short-term stability and robustness to thermal and mechanical fluctuations when compared to standard passive optical clocks. However, despite si
Externí odkaz:
https://doaj.org/article/752d92d06149495e8af134d7abac2123
Publikováno v:
Results in Physics, Vol 40, Iss , Pp 105813- (2022)
We in this paper study the macroscopic quantum states of a PT-symmetric Non-Hermitian Hamiltonian for N quantum-dots of two imaginary-levels in an optical cavity. The eigenstate energies are obtained in terms of spin-coherent-state variational method
Externí odkaz:
https://doaj.org/article/adee4c4a1f5541f29428576fb64df724
Akademický článek
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Akademický článek
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Publikováno v:
Symmetry, Vol 15, Iss 4, p 873 (2023)
This work is dedicated to the investigation of the superradiant stability of a rotating black hole derived from the nonlinear Maxwell theory of gravity, f(R). The evaluation of stability and instability in this study will be based on the absence and
Externí odkaz:
https://doaj.org/article/9245e5f12a7c4592ab38de46523fc786
Publikováno v:
New Journal of Physics, Vol 25, Iss 10, p 103048 (2023)
We carefully investigate the comprehensive impact of atom-cavity interaction and artificial magnetic fields on quantum phase transitions of anti-Jaynes-Cummings triangle model in the infinite frequency limit. We discover that ground states of the opt
Externí odkaz:
https://doaj.org/article/12cdf2539eff4a1596bcbc87c9f45cb9
Autor:
Mohsen Khodadi, Reza Pourkhodabakhshi
Publikováno v:
Physics Letters B, Vol 823, Iss , Pp 136775- (2021)
Focusing on the rotating black hole (BH) surrounded by the anisotropic fluid matters; radiation, dust, and dark matter, we study the massive scalar superradiant scattering and the stability in the Kiselev spacetime. Superradiance behavior is dependen
Externí odkaz:
https://doaj.org/article/22a2391a0e2a4c12bb8a062af78462a6