Is Gravity Enlarged at Small Distances?

[exponent137]

Are exist some theories that G is enlarged at very small distances?
Can you give some links?

Regards

 

[Finbar]

Are exist some theories that G is enlarged at very small distances?
Can you give some links?

Regards

Well G runs but it may well get smaller not larger depending on who you ask...

 

[hamster143]

All sorts of theories exist. Experimentally, significant scale-dependent variations in G (dG/G~1) are ruled out down to approx. 0.05 mm.

 

[Naty1]

I have NOT read of an increasing G at small distances.

In some multidimensional theories there is theory that G may leak to other dimensions, even parallel universes, and that that happens even at larger everyday scales...and might be a reason gravity is the weakest of known forces...

THREE ROADS TO QUANTUM GRAVITY by Lee Smolin is a modern popular non mathematical treatment...meaning three theories...

to probe gravity at sub microscopic lengths, Smolin feels a background independent framework is required, meaning the space and time must be formulated as dynamical relationships, not like a rigid lattice for example.

In addition as you approach Planck size, it would appear that everything we know may disappear in quantum foam; length, time, forces become indistinguishable, and hence appear might weaken at near the ultimate microscopic dimensions in the vicinity of
10^-33 cm.

 

[Naty1]

I should have also mentioned: we know that quantum mechanics and general relativity encounter irregularities (infinities) in the vicincity of singularities like the big bang and black hole centers..where space and time become incredibly curved/distorted/ and lose some of their everyday characteristics...so either something is wrong with those formulations or something is wrong with each of QM and GR...