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Fifty years of the calculation of the density of particles created in the early Friedmann Universe

The problem of particle creation in cosmology concerning whether the results for the number of particles are infinite or finite is discussed for scalar and spinor particles in Friedmann expanding Universe. It is shown that the results are always finite if one puts in case of scalar particles creation a special term into the Lagrangian. Numerical estimates of the effect of particle creation are made. The role of creation of superheavy particles in cosmology is discussed.

preprint2020arXivOpen access
A. A. GribYu. V. Pavlov
gr-qc
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A. A. GribYu. V. Pavlov

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