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Stable, Non-singular Bouncing Universe with Only a Scalar Mode by Kumar, K. Sravan; Maheshwari, Shubham; Mazumdar, Anupam; Peng, Jun is a scholarly article available to read on EtoBox.

What is Stable, Non-singular Bouncing Universe with Only a Scalar Mode about?

In this paper, we study a class of higher derivative, non-local gravity which admits homogeneous and isotropic non-singular, bouncing universes in the absence of matter. At the linearized level, the theory propagates only a scalar degree of freedom, and no vector or tensor modes. The scalar can be made free from perturbative ghost instabilities, and has oscillatory and bounded evolution across the bounce.

Author

Kumar, K. Sravan; Maheshwari, Shubham; Mazumdar, Anupam; Peng, Jun

Published

2020

Language

EN