Gravity in the dynamical approach to the cosmological constant

Details Gravity in the dynamical approach to the cosmological constant Gravity in the dynamical approach to the cosmological constant

2003-06-23

arxiv.org/abs/hep-th/0306208v4

Phys.Rev. D70 (2004) 063505

Physics

High Energy Physics

High Energy Physics - Theory

40 pages; references added; 3 new sections added to explain underlying idea, numerical results and quantum mechanical stabilit

Scientific paper

10.1103/PhysRevD.70.063505

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.

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