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- W2020481014 abstract "We study the role of finite widths of resonances in a nonlocal version of the Wick-Cutkosky model. The spectrum of bound states is known analytically in this model and forms linear Regge tragectories. We compute the widths of resonances, calculate the spectral density in an extension of the Breit-Wigner ansatz and discuss a mechanism for the damping of unphysical exponential growth of observables at high energy due to finite widths of resonances." @default.
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- W2020481014 title "Spectral density in the resonance region and analytic confinement" @default.
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- W2020481014 doi "https://doi.org/10.1103/physrevd.70.094037" @default.
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