Complex Singularity and Unitarity
نویسندگان
چکیده
منابع مشابه
Black holes and Rindler superspace: classical singularity and quantum unitarity
Canonical quantization of spherically symmetric initial data which is appropriate to classical interior black hole solutions in four dimensions is carried out and solved exactly without gauge fixing. The resultant mini-superspace manifold and arena for quantum geometrodynamics is twodimensional, of signature (+,−), non-singular, and can in fact be identified precisely with the first Rindler wed...
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The proof of the Khalfin Theorem for neutral meson complex is analyzed. It is shown that the unitarity of the time evolution operator for the total system under considerations assures that the Khalfin's Theorem holds. The consequences of this Theorem for the neutral mesons system are discussed: it is shown, eg., that diagonal matrix elements of the exact effective Hamiltonian for the neutral me...
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Two-dimensional potential flow of the ideal incompressible fluid with free surface and infinite depth can be described by a conformal map of the fluid domain into the complex lower half-plane. Stokes wave is the fully nonlinear gravity wave propagating with the constant velocity. The increase of the scaled wave height H/λ from the linear limit H/λ = 0 to the critical value Hmax/λ marks the tran...
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The strange-quark vector current form factors of the nucleon are analyzed within the framework of dispersion relations. Particular attention is paid to contributions made by KK̄ intermediate states to the form factor spectral functions. It is shown that, when the KK̄ → NN̄ amplitude is evaluated in the Born approximation, the KK̄ contributions are identical to those arising from a one-loop calculat...
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Agreement between the experimental value Γ(KS → γγ) and the number predicted via a one-loop chiral perturbation theory calculation has been cited as a success for the latter. On the other hand the one-loop prediction for the closely related process KL → π0γγ has been found to be a factor three below the experimental value. Using the inputs of unitarity and dispersion relations, we demonstrate t...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1965
ISSN: 0033-068X
DOI: 10.1143/ptp.33.500