Understanding the Holographic Principle

[pythagoras88]

Hi,

Today in a classical mechanics lecture, we were posed a question on whether there will be gravitational attraction between masses if the 2 masses were squashed into a 2D masses(so is flat). At first, i thought the force should still exist, since the force only depends on masses, so maybe can just do a surface integral instead of volume integral.

But, the answer given was that, gravity is an illusion that do not exist in 2D and the lecturer said this is linked to holographic principle.

Hmmm, the online sources seems to be a bit too esoteric for me, is there a simpler explanation for this? and, which book or online source should i refer to for more information?

 

[Pengwuino]

Your lecturer actually stated that as a fact?

 

[pythagoras88]

He quoted a physicist(i guess) from princeton that says that gravity is illusion, so i guess he kind of agree with him.

Is this stance still debatable?

 

[ngc1333]

He quoted a physicist(i guess) from princeton that says that gravity is illusion, so i guess he kind of agree with him.

I'm pretty sure he is talking about this:

http://www.nytimes.com/2010/07/13/science/13gravity.html"

Is this stance still debatable?

Yes.

 

[PJC01]

The Holographic Principle is a concept in theoretical physics that suggests that all the information in a three-dimensional space can be encoded on a two-dimensional surface. This means that our perceived three-dimensional reality is actually just a projection from a two-dimensional source. This idea was first proposed by physicist Leonard Susskind in the 1990s and has since gained a lot of attention in the scientific community.

In the context of gravity, the Holographic Principle suggests that gravity is not a fundamental force but rather an emergent phenomenon from the interactions of particles on a two-dimensional surface. This means that in a 2D world, there would be no gravitational attraction between masses because there is no "space" for the force to act in.

To understand this concept better, think of a hologram. A hologram is a 2D image that appears to have depth and dimension because of the way light is reflected off of it. Similarly, the Holographic Principle suggests that our 3D reality is just a projection from a 2D source, giving the illusion of depth and dimension.

As for further resources, I would recommend reading books by Leonard Susskind or Juan Maldacena, who have both extensively studied and written about the Holographic Principle. You can also find many articles and videos online that explain this concept in more detail. I hope this helps to clarify the concept for you.