Abstract
The short-time evolution of a class of nonlinear Klein-Gordon systems is studied. For nonzero mass, the short-time behavior of the field variable has an inverse-sine spectrum rather than an exponential one.
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Guha-Roy, C., Bagchi, B. & Sinha, D.K. Short-time evolution of nonlinear Klein-Gordon systems. Int J Theor Phys 26, 395–399 (1987). https://doi.org/10.1007/BF00672248
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DOI: https://doi.org/10.1007/BF00672248