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  • 2000-2004  (3)
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  • 1
    Electronic Resource
    Electronic Resource
    Ultralow frequency waves and total electron content fluctuations (2001)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 90 (2001), S. 2582-2590 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Low frequency electromagnetic waves in the ionosphere are examined, and we calculate the refraction angles and other properties as these waves propagate through the ionosphere. The correlation to fluctuations in the total electron content is derived, and the results are compared to observed results. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1380999
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Strings in Gravity with Torsion (2000)
    Springer
    General relativity and gravitation 32 (2000), S. 2007-2019 
    Details
    ISSN: 1572-9532
    Keywords: strings ; torsion ; Bianchi identity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A theory of gravitation in 4D is presented with strings used in the material action in U 4 spacetime. It is shown that the string naturally gives rise to torsion. It is also shown that the equation of motion a string follows from the Bianchi identity, gives the identical result as the Noether conservation laws, and follows a geodesic only in the lowest order approximation. In addition, the conservation laws show that strings naturally have spin, which arises not from their motion but from their one dimensional structure.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1001942301598
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Strings Have Spin (2000)
    Springer
    General relativity and gravitation 32 (2000), S. 347-351 
    Details
    ISSN: 1572-9532
    Keywords: Torsion
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract If a string source is used to replace the conventional point-like source of gravitation in spacetime with torsion, then intrinsic spin arises naturally as an attribute of the string. This spin stems from the structure of the string, and not from internal motions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1001948028584
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    Paper (German National Licenses)
    Fulltext
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