Hi everyone,
Here is something about the observational evidence for string theory.
https://www.livescience.com/physics-mathematics/quantum-physics/scientists-claim-to-find-first-observational-evidence-supporting-string-theory-which-could-finally-reveal-the-nature-of-dark-energy*******
Physicists have proposed a new model of space-time that may provide the 'first observational evidence supporting string theory,' a new preprint suggests.
Their calculations suggest that, at the smallest scales, space-time behaves in a profoundly quantum way, differing drastically from the smooth, continuous structure we experience in everyday life. According to their findings, the coordinates of space-time do not "commute" — meaning the order in which they appear in equations affects the outcome. This is similar to how a particle's position and velocity behave in quantum mechanics.
One of the most striking consequences of this quantum space-time, as predicted by string theory, is that it naturally leads to cosmic acceleration. Moreover, the researchers found that the rate at which this acceleration decreases over time aligns remarkably well with the latest observations from the Dark Energy Spectroscopic Instrument (DESI).
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Cheers.
Sriram
