Is Gravity Leaking Into Other Dimensions?

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SUMMARY

The discussion centers on the theory that gravity may be weak due to its interaction with higher or lower dimensions, a concept often associated with string theory. Participants assert that gravity's weakness does not require speculative explanations involving extra dimensions, as it can be explained through the attraction of matter and the bending of space-time as described by general relativity. The conversation highlights the importance of understanding string theory, which posits the existence of 10 or 11 dimensions, in relation to gravitational forces. Ultimately, the consensus is that gravity's behavior can be adequately explained without invoking additional dimensions.

PREREQUISITES
  • Understanding of general relativity and its implications on gravity.
  • Familiarity with string theory and its dimensional framework.
  • Knowledge of the concept of branes in theoretical physics.
  • Basic grasp of the forces of nature and their interactions.
NEXT STEPS
  • Research the principles of general relativity and its impact on gravitational theory.
  • Explore the fundamentals of string theory, focusing on its dimensional aspects.
  • Investigate the concept of branes and their role in modern theoretical physics.
  • Examine literature on the relationship between gravity and other fundamental forces.
USEFUL FOR

This discussion is beneficial for physicists, students of theoretical physics, and anyone interested in the complexities of gravitational theory and its relation to higher dimensions.

phillip2810
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Okay I'm definitely a layman but let me see if I can explain this. I recently heard of a theory that goes something like this: In relation to all the other physical forces in the universe, gravity is incredibly weak. To explain this, some think that our gravity is the result of a much more powerful force leaking into our dimension from higher ones. Or perhaps our gravitational force is leaking out into the lower dimensions. My question is about the validity of this theory. I don;t expect anyone to come out and prove it wrong or right or anything. But I was just looking for the opinion of someone with more experience than myself.

Phil
 
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This is pure supposition, it has no physical basis what so ever.
 
actually I read something along those lines as well, it's been a while though so I don't remember where. I think it was in a magazine, either Discover or Scientific American, but it could have been one of about 100 physics books I've read in the past couple of years. I believe the article was about ways to "see" the extra dimensions
 
All forces are not equal and gravtiy does not need some sci-fi explanation to that. gravity is the result of two forces, one being the atraction of all matter to each other due to a part of string theory and another is the bending of space-time known as relativity. there is no need to make it more complicated with extra dimensions at all.
 
Hi,

Some string theorists say that gravity is so weak because gravitons can travel across the dimensions between branes.

juju
 
Hat_Man said:
All forces are not equal and gravtiy does not need some sci-fi explanation to that. gravity is the result of two forces, one being the atraction of all matter to each other due to a part of string theory and another is the bending of space-time known as relativity. there is no need to make it more complicated with extra dimensions at all.

Maybe you didnt know, but string theories all talk about 10 dimensions (or 11). So naming string theory as a cause of gravity and then saying there is no need for extra dimensions doesn't really make sense, unless you know a 4-dimensional string theory.
 

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