Tag Info

New answers tagged

4

The electromagnetic and weak forces have been unified into the theory of the electroweak force. The recent discovery of the Higgs boson put the icing on this particular cake. The strong force is described by the same type of quantum Yang-Mills theory as the electroweak force, however it is not unified with it. There have been several attempts at unifying ...


0

Short answer: not yet. Long answer: The strong, EM, and weak forces have been unified via quantum field theories (QFT), while gravity is understood separately via general relativity. The two theories are currently incompatible with each other in the quantum regime. There are a variety of theoretical efforts underway to unify gravity with the other three ...


0

Once upon a time physicists dreamed that there would be one Theory of Everything (TOE) that would explain everything we see around us, or at least, from which all of the supposedly fundamental constants could be calculated and which would be so logically consistent it might explain why this is the only way things could be. That dream has died over the past ...


2

...space, time, energy, matter or even motion. I'm not quite sure how these things relate to each other, such as whether or not one emerges from another, or if there are even more fundamental 'elements' that make up our universe. I'm also unsure if physicists agree everything can be reduced down to one of them, such as energy. What are all of ...


0

I believe you are "jumping to conclusions." The reason gravity is "an open problem in physics," is not because it is several orders of magnitude smaller than the others. It is only a problem for those trying to unify gravity with the other three forces, to come up with a TOE.


0

It is not a problem in the sense that it bothers anybody or causes trouble in certain calculations. In physics, however, we would like to find out whether there is an explanation for certain phenomena. In this case, the phenomenon is that there is a huge gap between the scales of interaction strengths of gravity and the other forces. This has no explanation ...


0

So why then is the fact that gravity is many orders of magnitude weaker than the other fundamental forces a problem The problem is not that gravity is a weaker force but the open problem is that we do not know at present if there exist some relation between gravitational and other forces and probably if we are able to a new picture and dimension of ...


5

Let's look at the forces in nature, there are four of them as far as we know (note that I am not very precise in the numbers I give, but for the comparison I make this is enough): the strong force is very strong, it's coupling constant (which is a measure for its strength) is about 0.1 the weak force is not actually all that weak. It can be unified with ...



Top 50 recent answers are included