Measure Problem for Eternal and Non-Eternal Inflation - High Energy Physics - TheoryReport as inadecuate




Measure Problem for Eternal and Non-Eternal Inflation - High Energy Physics - Theory - Download this document for free, or read online. Document in PDF available to download.

Abstract: We study various probability measures for eternal inflation by applying theirregularization prescriptions to models where inflation is not eternal. Forsimplicity we work with a toy model describing inflation that can interpolatebetween eternal and non-eternal inflation by continuous variation of aparameter. We investigate whether the predictions of four different measuresproper time, scale factor cutoff, stationary and causal {diamond} changecontinuously with the change of this parameter. We will show that {only} forthe stationary measure the predictions change continuously. For the proper-timeand the scale factor cutoff, the predictions are strongly discontinuous. Forthe causal diamond measure, the predictions are continuous only if the stage ofthe slow-roll inflation is sufficiently long.



Author: Andrei Linde, Mahdiyar Noorbala

Source: https://arxiv.org/



DOWNLOAD PDF




Related documents