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  • 1
    Electronic Resource
    Electronic Resource
    Ideal-preserving Lorentzian connections (1987)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 1883-1885 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Fibers of the exterior bundle over a Lorentzian manifold can be given the structure of a Clifford algebra. The minimal left ideals of this Clifford algebra may be interpreted as spinors. In order to better understand spinorial properties of the Kähler equation in a curved space-time, conditions for the Lorentzian connection to preserve these ideals are examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.527451
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  • 2
    Electronic Resource
    Electronic Resource
    Dilation currents (1992)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 33 (1992), S. 2765-2767 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The conserved currents related to conformal Killing vectors are analyzed. By considering the dilation generator of Minkowski space-time, with the assumption that fields are static, arrived at is what is often known as the relativistic virial theorem. The application of this result to force-free electromagnetic fields is discussed, and the result is shown how it can rule out particlelike solutions to certain field theories.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.529545
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  • 3
    Electronic Resource
    Electronic Resource
    Debye potentials for Maxwell and Dirac fields from a generalization of the Killing–Yano equation (1997)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 38 (1997), S. 4504-4527 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: By using conformal Killing–Yano tensors, and their generalizations, we obtain scalar potentials for both the source-free Maxwell and massless Dirac equations. For each of these equations we construct, from conformal Killing–Yano tensors, symmetry operators that map any solution to another. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.532140
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  • 4
    Electronic Resource
    Electronic Resource
    A unified description of null and non-null shear-free congruences (1994)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 35 (1994), S. 1796-1802 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: A simple tensor equation is given that is satisfied by null vectors if and only if they are proportional to shear-free geodesics. Non-null vectors satisfy this equation if and only if they can be normalized to shear-free unit vectors. Thus this equation unifies the treatment of the null and non-null cases. Conformal properties of the shear-free condition and this tensor equation are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.530571
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  • 5
    Electronic Resource
    Electronic Resource
    Surface integrals for electromagnetic energy (1993)
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 34 (1993), S. 2936-2949 
    Details
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: The definition of electromagnetic field energy for systems with singular sources is considered. It is shown that whereas for an electrostatic system of point charges one can identify an interaction energy density that is integrable, no sensible improper integral can be defined for dipole, or higher-order multipole, sources. It is shown how force and torque density forms can be obtained by examining the field dependence of certain "potential forms.'' In the static case closed two-forms can be introduced that act as potentials for the force and torque two-forms. As these forms are constructed out of the fields in source-free regions singularities are avoided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.530106
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  • 6
    Electronic Resource
    Electronic Resource
    The Differential Approach to Spinors and Their Symmetries (1986)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 470 (1986), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1986.tb47988.x
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  • 7
    Electronic Resource
    Electronic Resource
    Cholecystokinin and gallbladder contraction: Effect of CCK infusion
    Amsterdam : Elsevier
    Peptides 2 (1981), S. 259-262 
    Details
    ISSN: 0196-9781
    Keywords: Cholecystokinin ; Gallbladder ; Radioimmunoassay ; Ultrasonography
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0196-9781(81)90041-3
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  • 8
    Electronic Resource
    Electronic Resource
    Fermions without spinors (1983)
    Springer
    Communications in mathematical physics 89 (1983), S. 341-362 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The classical Kähler equation for an inhomogeneous differential form is analysed in some detail with respect to the physical properties of its Minkowski space solutions. Although the components of the field contain only integer representations of the Lorentz group for a physical interpretation of the quantum theory, we impose fermionic commutators. The electromagnetic interactions are identical to those of a Dirac spinor field with an extra fourfold degeneracy. Possibilities for the interpretation of the extra degrees of freedom are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01214659
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  • 9
    Electronic Resource
    Electronic Resource
    The Dirac equation in exterior form (1985)
    Springer
    Communications in mathematical physics 98 (1985), S. 53-63 
    Details
    ISSN: 1432-0916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Using the correspondence between the Clifford and exterior algebras we write the Dirac equation in terms of differential forms. The covariances of the theory are then examined. We show in detail the correspondence with usual matrix methods.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01211043
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  • 10
    Electronic Resource
    Electronic Resource
    Double-dual solutions of generalized theories of gravitation (1981)
    Springer
    General relativity and gravitation 13 (1981), S. 581-589 
    Details
    ISSN: 1572-9532
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Solutions to the Stephenson-Yang theory of gravity and its generalizations are discussed. By considering the inclusion of a cosmological term in the action spherically symmetric static solutions are presented that do not fall into the vacuum Einstein class. A simple double-duality ansatz is responsible for all the solutions that are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00757244
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