What is the reality of string theory in our universe?

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String theory proposes that fundamental particles are one-dimensional strings rather than point-like particles, aiming to unify quantum mechanics and general relativity. Critics argue that string theory does not accurately reflect the observable universe, leading to debates about its validity. The complexity of quantum theory makes it challenging for many to grasp the implications of string theory fully. Some recommend reading resources, such as the book by Porkolski, to gain a deeper understanding. Overall, string theory remains a contentious and speculative area of theoretical physics.
yu_wing_sin
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What is string theory? And how come is the string theory?

Sorry, the quantum theory is not my strengh.

Is there anyone can telling me?

But I heard some peoples saying that string theory world is not as same as actual life.
 
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Please read the book by Porkolski about "String theory"
 
"Supernovae evidence for foundational change to cosmological models" https://arxiv.org/pdf/2412.15143 The paper claims: We compare the standard homogeneous cosmological model, i.e., spatially flat ΛCDM, and the timescape cosmology which invokes backreaction of inhomogeneities. Timescape, while statistically homogeneous and isotropic, departs from average Friedmann-Lemaître-Robertson-Walker evolution, and replaces dark energy by kinetic gravitational energy and its gradients, in explaining...

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