Strings Out of Tune: When Dimensions Are Lacking ⚡ экспресс
String theory predicts a strict number of dimensions, but what if we deviate from it just a tiny bit? The authors developed tools to describe strings in such almost-right worlds and tested them on a space with dimension slightly less than 26. Analogy: a slightly out-of-tune piano can still sound harmonious. So, maybe our Universe is a slightly ‘detuned’ string?
Unlike the Standard Model, where particles are point-like, string theory describes them as tiny vibrating threads. Their oscillations give rise to all forces, including gravity, which in this picture is the curvature of spacetime. For mathematical consistency, strings require 26 dimensions — just as a guitar string needs precise tuning. But our Universe has only four.
A new study explores what happens when dimensions are 'slightly out of tune' — their number deviates just a bit from 26, or a special field is present. Physicists have developed a tool to describe closed strings in such non-ideal spaces. An unexpected discovery: under these conditions, strings acquire an internal quantum state that compensates for the missing dimensions. It's like playing a slightly out-of-tune instrument where the performer adjusts their technique.
🎯 Bosonic string theory requires exactly 26 dimensions, superstring theory — 10. This new work for the first time makes it possible to study theories with a slightly different number of dimensions, down to fractional ones like 25.999.