The Power Spectrum in de Sitter Inflation, Revisited - General Relativity and Quantum CosmologyReport as inadecuate




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Abstract: We find that the amplitude of quantum fluctuations of the invariant de Sittervacuum coincides exactly with that of the vacuum of a comoving observer for amassless scalar inflaton field. We propose redefining the actual physicalpower spectrum as the difference between the amplitudes of the above vacua. Aninertial particle detector continues to observe the Gibbons-Hawkingtemperature. However, although the resulting power spectrum is stillscale-free, its amplitude can be drastically reduced since now, instead of theHubble-s scale at the inflationary period, it is determined by the square ofthe mass of the inflaton fluctuation field.



Author: Ivan Agullo, Jose Navarro-Salas, Gonzalo J. Olmo, Leonard Parker

Source: https://arxiv.org/







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