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5 papers · 2 filters
Some effects of different coordinate systems in cosmology
A. A. Grib, Yu. V. Pavlov
The analysis of the dynamics of radial movement in different reference frames used in cosmology is made. Use of different frames leads to the difference in inertial forces resultin…
Gravitational radiation as the bremsstrahlung of superheavy particles in the early Universe
A. A. Grib, Yu. V. Pavlov
The number of superheavy particles with the mass of the Grand Unification scale with trans-Planckian energy created at the epoch of superheavy particle creation from vacuum by the…
Particles with negative energies in nonrelativistic and relativistic cases
A. A. Grib, Yu. V. Pavlov
States of particles with negative energies are considered for the nonrelativistic and relativistic cases. In nonrelativistic case it is shown that the decays close to the attractin…
Particle properties outside of the static limit in cosmology
A. A. Grib, Yu. V. Pavlov
It is shown that in the rest frame of the observer in expanding Universe states of particles with negative energy exist.The properties of such states are studied. The comparison wi…
Fifty years of the calculation of the density of particles created in the early Friedmann Universe
A. A. Grib, Yu. V. Pavlov
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 Frie…