Astronomy and Astrophysics – Astrophysics
Scientific paper
2001-07-09
Int.J.Mod.Phys. D10 (2001) 781-784
Astronomy and Astrophysics
Astrophysics
5 pages, revtex, Int. Jour. Mod. Phys. D (Special issue of GRF essays 2001), single spaced version
Scientific paper
10.1142/S0218271801001566
Recent conjectures suggest the universe may have large extra dimensions, through which gravity propagates. This implies gross departures from Newton's law of gravity at small length scales. Here I consider some implications for particle dynamics on scales comparable to the compactification radius, $R_c \ltorder 1$ mm. During planet formation, coalescence of micron sized dust grains to planetesimals is a rate critical step. Blum et al (2000) found dust grain aggregates form low fractal dimension structures in microgravity, consistent with high angular momentum coalescence. I consider the effects of non-Newtonian gravity on dust aggregation on scales less than $R_c$ and show they naturally coalesce into low dimensional structures with high specific angular momentum. We infer $R_c \approx 80$ microns.
No associations
LandOfFree
Experimental hints of Gravity in Large Extra Dimensions? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Experimental hints of Gravity in Large Extra Dimensions?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Experimental hints of Gravity in Large Extra Dimensions? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-419094