Empirical constraints on vacuum decay in the stringy landscape

Details Empirical constraints on vacuum decay in the stringy landscape Empirical constraints on vacuum decay in the stringy landscape

2007-07-30

arxiv.org/abs/0707.4403v1

Int.J.Mod.Phys.A22:2661-2672,2007

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, 2 figures, proposes a laboratory experiment

Scientific paper

10.1142/S0217751X07036737

It is generally considered as self evident that the lifetime of our vacuum in the landscape of string theory cannot be much shorter than the current age of the universe. Here I show why this lower limit is invalid. A certain type of ``parallel universes'' is a necessary consequence of the string-landscape dynamics and might well allow us to ``survive'' vacuum decay. As a consequence our stringy vacuum's lifetime is empirically unconstrained and could be very short. Based on this counter-intuitive insight I propose a novel type of laboratory experiment that searches for an apparent violation of the quantum-mechanical Born rule by gravitational effects on vacuum decay. If the lifetime of our vacuum should turn out to be shorter than 6 x 10^{-13} seconds such an experiment is sufficiently sensitive to determine its value with state-of-the-art equipment.

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