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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 32 (1991), S. 1586-1590 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Explicit Fock spaces for massless multispinors and tensors satisfying (D'Alembertian)nΨ=0 are constructed. It is found that they carry indecomposable representations which allow Gupta–Bleuler type quantization. For symmetric tensors and odd n there is a unitary space of physical states.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 30 (1989), S. 1053-1059 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Quantum mechanics of a (nonrelativistic) system S localized on a topologically nontrivial manifold M as its configuration space is based on a quantization method, which, in general, reflects global properties of M, i.e., some of the observables of S will "feel'' the topology: There are topological effects and inequivalent quantizations on M. Some straightforward examples are given for such effects, using Borel quantization (BQ), the pointed plane as manifold M, and the energy operator with harmonic potential as observable. Two topological effects exist. There are unitarily inequivalent BQ on M, which are equivalent to the usual quantization on the plane with a topological potential, which has the form of a Bohm–Aharonov potential. There are different self-adjoint extensions of the energy operator for a given BQ that in some cases are related to another kind of topological potential. These effects are discussed in detail, especially the self-adjoint extensions of the energy operator. An experimental setup to verify some of the results is suggested.
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  • 3
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 31 (1990), S. 939-947 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Bargmann–Wigner equations in (3,2)-de Sitter space are found for all spins s≥1 and all masses. The massless fields have gauge freedom; they can be extended to indecomposable representations of the form of Gupta–Bleuler triplets.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 28 (1987), S. 215-220 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: It is shown that there are two equivalent field potentials for massless spin-2 fields in (3,2)–de Sitter space; a symmetric two-tensor and a three-tensor of mixed symmetry. Each theory carries two inequivalent Gupta–Bleuler triplets, which correspond to the two helicities. They differ in their behavior at spatial infinity. All four fields appear when writing linear conformal gravity in de Sitter space. Two of them describe the unitary conformal gravitons, and two describe part of the conformal ghost.
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  • 5
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    Journal of Mathematical Physics 29 (1988), S. 1698-1704 
    ISSN: 1089-7658
    Source: AIP Digital Archive
    Topics: Mathematics , Physics
    Notes: Massless, conformally invariant Bargmann–Wigner equations with gauge freedom are found. An invariant indefinite metric quantization is described.
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  • 6
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Chernobyl reactor accident was followed by a sharp increase in the incidence of thyroid cancer among children and adolescents in Belarus (Belorussia) and Ukraine,. Exposure to iodine-131 (131I) was responsible for most of the doses that affected the thyroids of these ...
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Letters in mathematical physics 20 (1990), S. 313-320 
    ISSN: 1573-0530
    Keywords: 35L05 ; 81C30 ; 81G20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract We show that the scalar multipole (□ +m 2) n φ = 0 forn odd and all massesm⩾0 allows a Gupta-Bleuler-type quantization with a unitary space of physical states.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 35 (1996), S. 127-129 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract The exact hazard function of the clonal expansion model was analyzed, and it was shown that only three of its four parameters can be determined by fitting to the age dependence of spontaneous tumor incidence rates. The same holds for the survival function.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 35 (1996), S. 127-129 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract   The exact hazard function of the clonal expansion model was analyzed, and it was shown that only three of its four parameters can be determined by fitting to the age dependence of spontaneous tumor incidence rates. The same holds for the survival function.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 36 (1997), S. 45-58 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract We derive explizit hazard functions for the clonal expansion model in the ``exact formulation'' and in the ``epidemiological approximation'' for the spontaneous rate and for short-time exposure. We investigate which combination of the biological parameters can be determined from the incidence function, and which cannot. We then analyze the incidence data of all solid tumors of atomic bomb survivors (1958–1987). We restrict ourselves to adults at exposure (〉20 years) and to attained age 〈80 years, and we consider the two cities (Hiroshima and Nagasaki) and the two sexes separately. With four parameters, we find good fits in each case, comparable to the quality of fit of epidemiological age-at-exposure and age-attained models used for comparison. The parameters which describe the spontaneous risk agree very well for the two cities, while they are quite different for the two sexes. The apparent flattening of the risk for elderly men can be described with the exact formulation of the clonal expansion model, but may be due to other causes than the mechanisms modeled. The dose-response parameters differ by more than two standard deviations (factor 2 to 3) between the two cities, when considering the same sex. They are bigger for the men of Nagasaki and the women of Hiroshima. One example for model application to tumors of specific organs (men's lung tumor) is considered.
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