Brazilian Journal of Physics

Công bố khoa học tiêu biểu

* Dữ liệu chỉ mang tính chất tham khảo

Sắp xếp:  
Obliquely Propagating Electron Acoustic Shock Waves in Magnetized Plasma
Brazilian Journal of Physics - Tập 48 - Trang 597-603 - 2018
Sona Bansal, Munish Aggarwal, Tarsem Singh Gill
Obliquely propagating electron acoustic shock waves in plasma with stationary ions, cold and superthermal hot electrons are investigated in magnetized plasma. Employing reductive perturbation method, Korteweg-de Vries-Burgers equation (KdVB) is derived in the small amplitude approximation limit. The analytical and numerical calculations of the KdVB equation show the variation of shock waves struct...... hiện toàn bộ
Fisher Information on the Phase Transition from Regular to Flat Top Optical Pulse in Cubic-Quintic Nonlinear Media
Brazilian Journal of Physics - Tập 54 - Trang 1-5 - 2023
Bijan Layek, Sk. Siddik, Golam Ali Sekh
We study the properties of optical pulses in cubic-quintic nonlinear media using Fisher information. The nonlinear media can support regular (sharp top) and flat top pulses depending on the type of quintic nonlinearity and the frequency of the pulse. For defocusing quintic nonlinearity, it holds both regular and flat top solitons. We find that the Fisher information suddenly drops near the transit...... hiện toàn bộ
Amplitude Death, Bifurcations, and Basins of Attraction of a Planar Self-Sustained Oscillator with Delayed Feedback
Brazilian Journal of Physics - Tập 52 Số 2 - 2022
Fabiola G. Prants, Cristian Bonatto
Electronic Structures and f-d Orbital Hybridization of a Heavy Fermion YbNiGa
Brazilian Journal of Physics - Tập 50 - Trang 35-38 - 2019
T. Jeong
The electromagnetic and thermal properties of a heavy fermion YbNiGa are investigated using first-principle methods with local density approximation (LDA) and LDA+U approaches. The Yb f-bands are located near the Fermi energy and hybridized with the Ni-3d states. This hybridization plays important roles to make characteristics of this material. Band calculation with the LDA framework does not matc...... hiện toàn bộ
Finite Temperatures by Means of Zero Kelvin Kohn-Sham Formalism of Density-Functional Theory
Brazilian Journal of Physics - Tập 49 Số 5 - Trang 615-622 - 2019
Mateus B. P. Querne, Daniel Vieira
Quantum Speed Limit Time of Topological Qubits Influenced by the Fermionic and Bosonic Environments
Brazilian Journal of Physics - Tập 52 - Trang 1-6 - 2022
Fatemeh Ahmadi, Soroush Haseli, Maryam Hadipour, Sara Heshmatian, Hazhir Dolatkhah, Shahriar Salimi
Quantum theory sets a bound on the minimum time required to transform from an initial state to a target state. The bound is known as quantum speed limit time. Quantum speed limit time can be used to determine the rate of quantum evolution for closed and open quantum systems. In the real world, we are dealing with open quantum systems. So, the study of quantum speed limit time for open quantum syst...... hiện toàn bộ
Evaluation of Static and Dynamic Yield Stress for Isotropic and Anisotropic Particle–Based MR Fluids: Modeling and Analysis
Brazilian Journal of Physics - Tập 50 - Trang 399-409 - 2020
Mujiba Pisuwala, Ramesh V Upadhyay, Kinnari Parekh
Structural deformation in the low shear rate region that is an undeformed state is investigated for the isotropic and anisotropic magnetic particle–based magnetorheological (MR) fluid. Flow curves were obtained for both MR fluids between 0.1 s−1 and 500 s−1 in the absence and in the presence of magnetic fields. A model to describe the flow behavior over the full shear rate study is proposed. The p...... hiện toàn bộ
Motion of Charged Particle in Electric and Magnetic Fields in 3D Noncommutative Spaces and Related Problems
Brazilian Journal of Physics - Tập 41 - Trang 290-296 - 2011
Mai-Lin Liang, Rui-Lin Yang
In three-dimensional noncommutative phase space, the energy spectrum and wave functions for the motion of a charged particle in a magnetic field are derived. Due to the momentum–momentum noncommutativity, the particle feels an effective magnetic field in a new direction. When an external electric field perpendicular to this effective magnetic field is applied, the Hall conductivity can be calculat...... hiện toàn bộ
The Schrödinger Equation, the Zero-Point Electromagnetic Radiation, and the Photoelectric Effect
Brazilian Journal of Physics - Tập 46 - Trang 184-191 - 2016
H. M. França, A. Kamimura, G. A. Barreto
A Schrödinger type equation for a mathematical probability amplitude Ψ(x,t) is derived from the generalized phase space Liouville equation valid for the motion of a microscopic particle, with mass M and charge e, moving in a potential V(x). The particle phase space probability density is denoted Q(x,p,t), and the entire system is immersed in the “vacuum” zero-point electromagnetic radiation. We sh...... hiện toàn bộ
Interaction of Silver Nanoparticles with Bilayer Graphene: A Raman Study
Brazilian Journal of Physics - - 2022
L. Akashi, Henrique Ferreira, Juan Pablo de Villanueva, Melissa Yactayo, C. V. Landauro, J. Quispe-Marcatoma, Lucas Barreto, Rafael N. Gontijo, Cristiano Fantini, M. A. Pimenta, A. Champi
Tổng số: 926   
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 10