Now showing items 61-80 of 935
The Hypothesis of Locality and its Limitations
The hypothesis of locality, its origin and consequences are discussed. This supposition is necessary for establishing the local spacetime frame of accelerated observers; in this connection, the measurement of length in a ...
Unipolar spin diodes and transistors
(American Institute of Physics, 2000-12)
Unipolar devices constructed from ferromagnetic semiconducting materials with variable magnetization direction are shown theoretically to behave very similarly to nonmagnetic bipolar devices such as the p-n diode and the ...
Spin-Hall Effect in a  GaAs Quantum Well
(American Physical Society, 2006-12)
A self-consistent treatment of the spin-Hall effect requires consideration of the spin- orbit coupling and electron-impurity scattering on equal footing. This is done here for the experimentally relevant case of a  ...
Effect of electrical bias on spin transport across a magnetic domain wall
(American Institute of Physics, 2004-09)
We present a theory of the current-voltage characteristics of a magnetic domain wall between two highly spin-polarized materials, which takes into account the effect of the electrical bias on the spin-flip probability of ...
The Nature and Origin of Molecular Knots in Planetary Nebulae
(American Institute of Physics, 2005-11)
Planetary Nebulae (PNe) are major contributors to the enrichment of the interstellar medium (ISM). Knots and filaments in the ionized gas images of PNe are common, if not ubiquitous. Additionally, it has been shown that ...
The resonance counting function for Schrödinger operators with generic potentials
We show that the resonance counting function for a Schr¨odinger operator has maximal order of growth for generic sets of real-valued, or complex-valued, L1-compactly supported potentials.
Relativity and Nonlocality
The basic physical structure of the relativistic theory of gravitation is discussed. The significant role that the Hypothesis of Locality plays in relativity theory is elucidated via the phenomenon of spin-rotation coupling. The limitations...
Anomalous layering of Fe(CO)5 adsorbed on graphite
(American Physical Society, 1989-02)
Synchrotron x-ray diffraction experiments reveal the adsorption of iron pentacarbonyl [Fe(CO)5] on graphite basal-plane surfaces to be an extreme example of incomplete wetting in which only one solid layer of film coexists ...
Schrödinger equation for the one-particle density matrix of thermal systems: an alternative formulation of Bose-Einstein condensation
(Institute of Physics, 2007-02)
both with and without the confining trap. The results are in very good agreement with those of the full statistical physics treatment. This is an alternative to the Bose-Einstein condensation in the standard ideal Bose-gas treatment....
Kronig-Penney model with the tail-cancellation method
(American Association of Physics Teachers, 2001-04)
The Kronig-Penney model of an electron moving in a periodic potential is solved by the so-called tail-cancellation method. The problem also serves as a simple illustration of the tail-cancellation method itself.
Finite Width and Local Field Corrections to Spin Coulomb Drag in a Quasi-Two-Dimensional Electron Gas
(American Physical Society, 2008-01)
We study the spin Coulomb drag in a quasi-two-dimensional electron gas of finite transverse width, including local field corrections beyond the random phase approximation (RPA). We find that the finite transverse width of ...
We study a simple class of time-dependent rotating Ricci-flat cylindrically symmetric spacetime manifolds whose geodesics admit gravitomagnetic jets. The helical paths of free test particles in these jets up and down ...
Modification of the Doppler effect due to the helicity-rotation coupling
The helicity-rotation coupling and its current empirical basis are examined. The modification of the Doppler effect due to the coupling of photon spin with the rotation of the observer is considered in detail in connection ...
On the Speed of Gravity and Relativistic v/c Corrections to the Shapiro Time Delay
Recent papers by Samuel [1,2] declared that the linearized post-Newtonian v/c effects are too small to have been measured in the recent experiment involving Jupiter and quasar J0842+1845 [3,4,5] that was used to measure ...
, are pointed out. The physical principles of the nonlocal theory of accelerated observers are presented. The implications of the nonlocal theory are briefly discussed....
An Embedding for General Relativity and its Implications for New Physics
of the extra coordinate. For unified theories of the forces in higher dimensions, this has major physical implications....
Millimeter Laser Ranging to the Moon: a comprehensive theoretical model for advanced data analysis
Lunar Laser Ranging (LLR) measurements are crucial for advanced exploration of the evolutionary history of the lunar orbit, the laws of fundamental gravitational physics, selenophysics and geophysics as well as for future human missions to the Moon...
Gravitational bending of light by planetary multipoles and its measurement with microarcsecond astronomical interferometers
microarcsecond are taken into account, parametrized, and classified in accordance with their physical origin. We discuss the observational capabilities of the near-future optical and radio interferometers for detecting the Doppler modulation of the radial...
Beyond the standard IAU framework
(Cambridge university Press, 2010-01)
We discuss three conceivable scenarios of extension and/or modification of the IAU relativistic resolutions on time scales and spatial coordinates beyond the Standard IAU Framework. These scenarios include: (1) the formalism ...
The Origins Billions Star Survey: Galactic Explorer
(The Astronomical Society of the Pacific, 2006-10)
The Origins Billions Star Survey is a mission concept addressing the astrophysics of extrasolar planets, Galactic structure, the Galactic halo and tidal streams, the Local Group and local supercluster of galaxies, dark ...