The discussion revolves around the concept of Brane Tension (t_3) in cosmology, exploring its definition, implications, and potential similarities to the cosmological constant. Participants seek to clarify the nature of Brane Tension and its effects within cosmological models.
Participants express differing views on the nature and implications of Brane Tension, with no consensus reached on its relationship to the Cosmological constant or its behavior under expansion.
There are unresolved questions regarding the scale dependence of Brane Tension and its precise role in cosmological models, which may affect the validity of comparisons to the Cosmological constant.
Well, it's basically a tension (like a tension on a string) that wants to cause the brane to contract.Omega137 said:Can anyone help me with explaining what is Brane Tension (t_3)
I'm reading an article on cosmology, and I need to understand it...
Chalnoth said:Well, it's basically a tension (like a tension on a string) that wants to cause the brane to contract.
Well, for that to be the case, it would need to be independent of scale. That is, if I stretched the brane (via cosmological expansion), the tension would remain the same. This may be the case, but I'm not so sure.Omega137 said:I don't know if am I right; but my idea is that the Brane Tension is similar to a Cosmological constant on the Brane...