Cyclic completion of the anamorphic universe

Abstract

Cyclic models of the universe have the advantage of avoiding initial conditions problems related to postulating any sort of beginning in time. To date, the only known viable examples of cyclic models have been ekpyrotic. In this paper, we show that the recently proposed anamorphic scenario can also be made cyclic. The key to the cyclic completion is a classically stable, non-singular bounce. Remarkably, even though the bounce construction was originally developed to connect a period of contraction with a period of expansion both described by Einstein gravity, we show here that it can naturally be modified to connect an ordinary contracting phase described by Einstein gravity with a phase of anamorphic smoothing. The paper will present the basic principles and steps in constructing cyclic anamorphic models.

22 pages, 3 figures; Sec.5 of v2 substantially revised to include recent developments; v3 updated to match journal version

References in corpus (13)

• Starting the Universe: Stable Violation of the Null Energy Condition and Non-standard Cosmologies
• Eternal inflation and its implications
• New Ekpyrotic Cosmology
• Generating Ekpyrotic Curvature Perturbations Before the Big Bang
• The Measure Problem in Cosmology
• Generic instabilities of non-singular cosmologies in Horndeski theory: a no-go theorem
• Classically stable non-singular cosmological bounces
• Generalized Galileons: instabilities of bouncing and Genesis cosmologies and modified Genesis
• Fully stable cosmological solutions with a non-singular classical bounce
• On the local well-posedness of Lovelock and Horndeski theories
• Unitary null energy condition violation in $P(X)$ cosmologies
• Space-time slicing in Horndeski theories and its implications for non-singular bouncing solutions
• Bouncing Negative-Tension Branes

Cited by in corpus (1)

• Gravitational waves in a cyclic Universe: resilience through cycles and vacuum state