Results 281 to 290 of about 9,827,039 (315)
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, 1969
The theory of explicitly time‐dependent invariants is developed for quantum systems whose Hamiltonians are explicitly time dependent. The central feature of the discussion is the derivation of a simple relation between eigenstates of such an invariant ...
H. Lewis, W. Riesenfeld
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The theory of explicitly time‐dependent invariants is developed for quantum systems whose Hamiltonians are explicitly time dependent. The central feature of the discussion is the derivation of a simple relation between eigenstates of such an invariant ...
H. Lewis, W. Riesenfeld
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Quantization of the Electromagnetic Field
2000In this chapter, we quantize the electromagnetic field and find the commutation relations between the various components of the electric, magnetic fields and the vector potential.
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Electromagnetic fields and cells
Journal of Cellular Biochemistry, 1993AbstractThere is strong public interest in the possibility of health effects associated with exposure to extremely low frequency (elf) electromagnetic (EM) fields. Epidemiological studies suggest a probable, but controversial, link between exposure to elf EM fields and increased incidence of some cancers in both children and adults.
Ann Shirley-Henderson +2 more
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Forward and Inverse Scattering Algorithms based on Contrast Source Integral Equations, 2018
This chapter examines solutions to the Maxwell equations in a vacuum: monochromatic plane waves and their polarizations, plane waves, and the motion of a charge in the field of a wave (which is the principle upon which particle detection is based).
N. Deruelle, J. Uzan
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This chapter examines solutions to the Maxwell equations in a vacuum: monochromatic plane waves and their polarizations, plane waves, and the motion of a charge in the field of a wave (which is the principle upon which particle detection is based).
N. Deruelle, J. Uzan
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General Electromagnetic Fields [PDF]
, 1995 In this Chapter we will derive expressions for general field and alignment errors to be used in the Hamiltonian perturbation theory. Pure electromagnetic multipole fields have been derived in [2.1] from the Laplace equation while ignoring kinematic terms as well as higher-order field perturbations.
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Electromagnetic theories of surface-enhanced Raman spectroscopy.
Chemical Society Reviews, 2017Surface-enhanced Raman spectroscopy (SERS) and related spectroscopies are powered primarily by the concentration of the electromagnetic (EM) fields associated with light in or near appropriately nanostructured electrically-conducting materials, most ...
Songyuan Ding +3 more
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On the sampling of electromagnetic fields
2010 URSI International Symposium on Electromagnetic Theory, 2010We address the problem of extracting the maximum amount of information on an electromagnetic field over a domain D O from field samples on a domain D I , with a priori information on the radiating source. The problem is faced in two steps. In the first one, the source reconstruction is dealt with by taking into account the available a priori ...
CAPOZZOLI, AMEDEO +3 more
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Atoms in Electromagnetic Fields
1994Atoms in weak broadband quasi-resonant fields - light shifts atoms in linear superpositions of Zeeman sublevels-Zeeman coherences atoms in strong radiofrequency fields - the dressed-atom approach in the RF domain atoms in intense resonant laser beams - the dressed-atom approach in the optical domain the radiative cascade of the dressed atom - photon ...
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1994
We concluded the previous chapter with the hope that the field may provide the way out of the paradoxes of thermodynamics. We point out that various intuitive ideas underlying field theory, such as action by ‘contact’, the idea of ‘locality’ or a ‘chain of causes’, or the mechanical model provided by the field, are respectively unintelligible, illusory,
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We concluded the previous chapter with the hope that the field may provide the way out of the paradoxes of thermodynamics. We point out that various intuitive ideas underlying field theory, such as action by ‘contact’, the idea of ‘locality’ or a ‘chain of causes’, or the mechanical model provided by the field, are respectively unintelligible, illusory,
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2011
The combined action functional for the electromagnetic and gravitational fields in the presence of charged matter is given by $$ S\equiv S_{\rm G}[g_{\mu\nu}]+ S_{\rm E}[g_{\mu\nu},A_\mu] + S_{\rm M}[g_{\mu\nu},A_\mu,\Phi^A], $$ where S M is the action functional for the material system and the ? A are the matter dynamical variables.
Steven M. Christensen, Bryce S. DeWitt
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The combined action functional for the electromagnetic and gravitational fields in the presence of charged matter is given by $$ S\equiv S_{\rm G}[g_{\mu\nu}]+ S_{\rm E}[g_{\mu\nu},A_\mu] + S_{\rm M}[g_{\mu\nu},A_\mu,\Phi^A], $$ where S M is the action functional for the material system and the ? A are the matter dynamical variables.
Steven M. Christensen, Bryce S. DeWitt
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