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Nonlocal electrodynamics of rotating systems
(American Physical Society, 2005)
. The approach adopted here is therefore based on the correspondence principle: the nonrelativistic quantum physics of electrons in circular “orbits” is studied. The helicity dependence of the photoeffect from the circular states of atomic hydrogen is explored...
Theoretical prediction of spectral and optical properties of bacteriochlorophylls in thermally disordered LH2 antenna complexes
(American Institute of Physics, 2006)
mechanical modeling, is demonstrated by calculating the absorption and circular dichroism spectra of the B800-B850 bacteriochlorophylls of the LH2 antenna complex from Rs. molischianum at room temperature. The calculated spectra are found to be in good...
Ambipolar spin diffusion and D'yakonov-Perel' spin relaxation in GaAs quantum wells
(American Physical Society, 2009)
We report theoretical and experimental studies of ambipolar spin diffusion in a semiconductor. A circularly polarized laser pulse is used to excite spin-polarized carriers in a GaAs multiple quantum-well sample at 80 K. Diffusion of electron...
Optics of rotating systems
(American Physical Society, 2009)
Electrodynamics of rotating systems is expected to exhibit novel nonlocal features that come about when acceleration-induced nonlocality is introduced into the special relativity theory in conformity with the Bohr-Rosenfeld ...
Spinning particles in the vacuum C metric
(Institute of Physics, 2005)
The motion of a spinning test particle given by the Mathisson-Papapetrou equations is studied on an exterior vacuum C metric background spacetime describing the accelerated motion of a spherically symmetric gravitational source. We consider circular...
Circular holonomy and clock effects in stationary axisymmetric spacetimes
(American Institute of Physics, 2001)
Stationary axisymmetric spacetimes containing a pair of oppositely rotating periodically intersecting circular geodesics allow us to study the various so-called 'clock effects' by comparing either observer or geodesic proper time periods of orbital...
Investigation of the presence of charge order in magnetite by measurement of the spin wave spectrum
(American Physical Society, 2006)
Inelastic neutron scattering results on magnetite (Fe3O4) show a large splitting in the acoustic spin wave branch, producing a 7 meV gap midway to the Brillouin zone boundary at q=(0,0,1∕2) and ℏω=43 meV. The splitting occurs below the Verwey...
Gravitomagnetism and relative observer clock effects
(American Institute of Physics, 2000)
The gravitomagnetic clock effect and the Sagnac effect for circularly rotating orbits in stationary axisymmetric spacetimes are studied from a relative observer point of view, clarifying their relationships and the roles played by special observer...
Three Early Byzantine Ornaments
(University of Missouri--Columbia. Museum of Art and Archaeology, 1992)
"Silver and gold jewelry played an important role in the expansion of Roman / Late Antique metalworking techniques and in the decorative repertoire of Byzantine art. An interesting group of Byzantine jewelry -- two silver ...
An alternative derivation of the gravitomagnetic clock effect
(American Institute of Physics, 2001)
The possibility of detecting the gravitomagnetic clock effect using artificial Earth satellites provides the incentive to develop a more intuitive approach to its derivation. We first consider two test electric charges moving on the same circular...
Gravitation and Nonlocality
(arXiv, 2001)
The physical basis of the standard theory of general relativity is examined and a nonlocal theory of accelerated observers is described that involves a natural generalization of the hypothesis of locality. The nonlocal ...
The Gazelle Mosaic : An Inhabited Scroll in Missouri
(University of Missouri--Columbia. Museum of Art and Archaeology, 1997)
-in-trade of Roman and Early Byzantine mosaic art. On display at the Museum of Art and Archaeology is a circular mosaic fragment representing a gazelle kneeling in the middle of an acanthus scroll, which is a particularly interesting example of this type...
Spin-Gravity Coupling
(arXiv, 2008)
Mathisson's spin-gravity coupling and its Larmor-equivalent interaction, namely, the spin-rotation coupling are discussed. The study of the latter leads to a critical examination of the basic role of locality in relativistic ...
The Multitude of Molecular Hydrogen Knots in the Helix Nebula
(Institute of Physics, 2005)
. The brightest H2 emission (~3 × 10-4 ergs s-1 cm-2 sr-1) may be enhanced by a larger than unity area filling factor of H2 knots or may be an individual H2 knot exposed to direct starlight, causing rapid photoevaporation compared with the more embedded knots...
Gravitational couplings of intrinsic spin
(American Institute of Physics, 2000)
The gravitational couplings of intrinsic spin are briefly reviewed. A consequence of the Dirac equation in the exterior gravitational field of a rotating mass is considered in detail, namely, the difference in the energy ...
Numerical Methods for the Simulation of Dynamical Mass Transfer in Binaries
(American Astronomical Society, 2002)
We describe computational tools that have been developed to simulate dynamical mass transfer in semidetached, polytropic binaries that are initially executing synchronous rotation upon circular orbits.
Initial equilibrium ...
Spin and Rotation in General Relativity
(arXiv, 2001)
Rapporteur's Introduction to the GT8 session of the Ninth Marcel Grossmann Meeting (Rome, 2000); to appear in the Proceedings.
The Hypothesis of Locality and its Limitations
(arXiv, 2003)
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 ...
Quantum Theory in Accelerated Frames of Reference
(arXiv, 2005)
The observational basis of quantum theory in accelerated systems is studied. The extension of Lorentz invariance to accelerated systems via the hypothesis of locality is discussed and the limitations of this hypothesis are ...
Drude weight, plasmon dispersion, and pseudospin response in doped graphene sheets
(arXiv, 2009)
Plasmons in ordinary electron liquids are collective excitations whose long-wavelength limit is rigid center-of-mass motion with a dispersion relation that is, as a consequence of Galileian invariance, unrenormalized by ...