can there be such an ST with BI?
Originally posted by Urs
The more prominent candidate for a non-perturbative formulation of
The BFSS matrix model has several intepretations: The one inherited from the YM theory is that of a quantum mechanics of N D0 brains (pointlike brains) between which ground state strings stretch. The matrices in the model can be interpreted as the coordinates of the D0 branes and the non-commutativity of these coordinates comes, heuristically, from this non-local interconnection.
The second interpretation is maybe more surprising: One can start quantizing the supermembrane, the +1dim analogue of the string qhich lives in 11 dimensions. It turns out that the Hamiltonian of this membrane can be regularized by replacing coordinates by matrices. Fiddling around with this the Hamiltonian can be shown to be that of the BFSS matrix model. Blocks of block diagonal matrices represent blobs of membrane which interact via the non-diagonal elements.
In any case, one can show that many elements and amplitudes of string theory can be reproduced from the matrix model. Because the matrix model is non-perturbatively formulated it was conjectured to be _the_ non-perturbative formulation for a given asymptotical defined spacetime.
This is not precisely "background independent", but it is very interesting.
Background independent string theory is a theoretical framework that attempts to reconcile general relativity and quantum mechanics by describing strings as the fundamental building blocks of the universe. Unlike traditional string theory, which assumes a fixed background space-time, background independent string theory does not rely on any pre-existing background structure and allows space-time to emerge from the interactions of strings.
Traditional string theory assumes a fixed background space-time, while background independent string theory does not rely on any pre-existing background structure. This allows for a more dynamic and flexible description of the universe, with space-time emerging from the interactions of strings.
If background independent string theory is proven to be valid, it would have significant implications for our understanding of the universe. It could potentially resolve some of the major challenges in modern physics, such as the unification of general relativity and quantum mechanics, and the nature of space-time.
Background independent string theory is a theoretical framework, so it cannot be directly tested in the traditional sense. However, scientists can test its predictions and implications through experiments and observations. Additionally, the framework can be refined and improved through mathematical models and simulations.
One of the main challenges of background independent string theory is that it is a highly complex and abstract mathematical framework, making it difficult to derive testable predictions or make concrete progress. Additionally, there are still many unanswered questions and uncertainties surrounding the theory, and it has faced criticism for lacking empirical evidence to support its claims.