Gravity in the dynamical approach to the cosmological constant

Abstract

One of the most disturbing difficulties in thinking about the cosmological constant is that it is not stable under radiative corrections. The feedback mechanism proposed in [hep-th/0306108] is a dynamical way to protect a zero or small cosmological constant against radiative corrections. Hence, while this by itself does not solve the cosmological constant problem, it can help solving the problem. In the present paper we investigate stability and gravity in this approach and show that the feedback mechanism is both classically and quantum mechanically stable and has self-consistent, stable dynamics.

40 pages; references added; 3 new sections added to explain underlying idea, numerical results and quantum mechanical stability; version to appear in PRD

References in corpus (5)

• The Cosmological Constant and Dark Energy
• Cosmological Constant - the Weight of the Vacuum
• A Dynamical Approach to the Cosmological Constant
• Testable anthropic predictions for dark energy
• M-theory, Cosmological Constant and Anthropic Principle

Cited by in corpus (7)

• Categorizing Different Approaches to the Cosmological Constant Problem
• Density perturbations in general modified gravitational theories
• Cosmological Constant from the Emergent Gravity Perspective
• The Cosmological Constant Problem, an Inspiration for New Physics
• Tadpole Cosmology: Milne Solution as a Cosmological Constant Hideout
• QCD-scale modified-gravity universe
• Reheating after relaxation of large cosmological constant