搜索结果: 91-105 共查到“理学 the magnetic field”相关记录220条 . 查询时间(0.091 秒)
Magnetic field amplification and electron acceleration to near-energy equipartition with ions by a mildly relativistic quasi-parallel plasma protoshock
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
The prompt emissions of gamma-ray bursts are seeded by radiating ultrarelativistic electrons. Internal shocks propagating through a jet launched by a stellar implosion, are expected to amplify the mag...
Magnetic field effects on some astrophysical properties of Quark Stars
High Energy Astrophysical Phenomena (astro-ph.HE)
2010/12/24
This thesis aims to study how amending certain astrophysical observable of quark stars due to presence of magnetic field. To do this we need to obtain Equation of State (EOS) and consider the stabilit...
Prefect Transfer of Quantum States on Spin Chain with Dzyaloshinskii- Moriya interaction in inhomogeneous Magnetic field
XY Spin-Chain Teleportation Dzyaloshinskii-Moriya interaction
2010/10/29
In this work, we use the Hamiltonian of a modified Dzyaloshinskii-Moriya model and investigate the perfect transfer of the quantum state on the spin networks. In this paper, we calculate fidelity in w...
Wave packet revivals in a graphene quantum dot in a perpendicular magnetic field
packet revivals graphene quantum dot perpendicular magnetic field
2010/10/27
We study the time-evolution of localized wavepackets in graphene quantum dots in a perpendicular magnetic field, focusing on the quasiclassical and revival periodicities, for different values of the m...
Realtime magnetic field sensing and imaging using a single spin in diamond
Realtime magnetic field sensing imaging diamond
2010/10/27
The Zeeman splitting of a localized single spin can be used to construct a magnetometer allowing high precision measurements of magnetic fields with almost atomic spatial resolution.
Seismic Study of Magnetic Field in the Solar Interior
Sun oscillations interior magnetic field
2010/9/15
Magnetic field in the solar interior contributes to the even order splitting coefficients, but it is not possible to separate the effect of magnetic field from those due to other deviations from spher...
The Evolution of Vector Magnetic Field Associated with Major Flares in NOAA AR10656
Magnetic field evolution flares
2010/9/15
In this paper, we study the evolution of vector magnetic field of AR 10656 by using the observations of Huairou Solar Observing Station (HSOS, China) and Big Bear Solar Observatory (BBSO, USA).The mag...
The Sun's magnetic field warps its environment（图）
The Sun's magnetic field environment astronauts
2010/9/21
The Sun's extended magnetic field provides a vital shield for astronauts; without it they would be left exposed to potentially deadly cosmic rays entering in from outside the solar system. Now, a grou...
A "hybrid plane" with spin-orbit interaction and magnetic field
"hybrid plane" with spin-orbit interaction magnetic field
2010/12/13
We discuss spectral and resonance properties of a Hamiltonian describing motion of an electron moving on a \hybrid surface" consisting on a hal ine attached by its endpoints to a plane under in uence ...
Positive Quantization in the Presence of a Variable Magnetic Field
Magnetic field pseudodifferential operator coherent state Berezin operator Bargmann transform
2010/12/3
Starting with a previously constructed family of coherent states, we introduce the Berezin quantization for a particle in a variable magnetic field and we show that it constitutes a strict quantizatio...
Entanglement in a Time-Dependent Coupled XY Spin Chain in an External Magnetic Field
Entanglement Time-Dependent Coupled XY Spin Chain External Magnetic Field
2010/10/18
We consider an infinite one dimensional anisotropic XY spin chain with a nearest neighbor time-
dependent Heisenberg coupling J(t) between the spins in presence of a time-dependent magnetic
field h(...
Two interacting electrons in a magnetic field: comparison of semiclassical, quantum, and variational solutions
interacting electrons time-dependent variational principle
2010/10/27
The quantum mechanical many-body problem is rarely analytically solvable. One notable exception is the case of two electrons interacting via a Coulomb potential in a uniform magnetic field. The motion...
A "hybrid plane" with spin-orbit interaction and magnetic field
hybrid plane spin-orbit interaction magnetic field
2010/10/27
We discuss spectral and resonance properties of a Hamiltonian describing motion of an electron moving on a \hybrid surface" consisting on a hal ine attached by its endpoints to a plane under in uence ...
Storage of quantum coherences as phase labeled local polarization using magnetic field gradients in NMR
Storage of quantum coherences phase labeled local polarization magnetic field gradients
2010/10/18
Long decay times were previously observed in samples such as 29Si, C60,Y2O3 by applying multi-
pulse nuclear magnetic resonance sequences to measure decoherence times. They are originated in
stimula...
Earth's magnetic field older than we thought（图）
Earth's magnetic field the planet's core the ancient field
2010/3/26
Earth's magnetic field, which shields us from the Sun's deadly rays, emerged from the planet's core even earlier in Earth's history than we previously thought. While this field, 3.45 billion years ago...