In a hypothetical multidimensional Universe, extra dimensions might be shaped like a Klein bottle—a non-orientable surface, much like a one-sided Möbius strip. This topology breaks CP symmetry (the symmetry between particles and antiparticles), leading to a wall of fermion condensate. If our 3D brane (membrane) passes through this wall, particles are born, described by Bogoliubov coefficients. This mechanism includes all the conditions needed to explain the dominance of matter over antimatter in the Universe.
In the familiar world, there are three dimensions. But physicists allow for the existence of hidden, curled-up directions. If one of them is twisted into a Klein bottle—a surface with no inside or outside—fundamental laws break down. This shape violates CP symmetry, a rule of the Standard Model that dictates matter and antimatter should be created in equal amounts.
In the curved dimension, a dense layer of virtual pairs arises—something like a fog of unborn matter. Our three-dimensional universe, like a ship, glides through this fog. From the friction with it, real particles are born, but due to the symmetry breaking—slightly more matter. Just one extra proton per billion is enough to give rise to galaxies and us.
This mechanism elegantly explains the mystery of the early universe: where the matter came from. Without this microscopic imbalance, the world would have remained empty.
🎯 A Klein bottle cannot be constructed in a three-dimensional world: it intersects itself. Its true form is revealed only in four dimensions.