A new scale in the sky

Details A new scale in the sky A new scale in the sky

2006-11-21

arxiv.org/abs/hep-th/0611227v1

Int.J.Mod.Phys.D15:2147-2152,2006

Physics

High Energy Physics

High Energy Physics - Theory

6 pages, 2 figures included with epsfig. Essay written for the 2006 Awards for Essays on Gravitation (Gravity Research Foundat

Scientific paper

10.1142/S0218271806009480

The existence of a new ultraviolet scale $\Lambda=g M_P$ for effective
theories with gravity and U(1) gauge fields has recently been conjectured as a
possible criterion for distinguishing parts of the swampland from the string
landscape. Here we discuss a possible phenomenological signature of this scale,
for electromagnetic fields, in astrophysical observations.

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