Speaker
Description
The laws of nature are expected to remain the same under mirror reflection. Parity symmetry is known to be respected by classical gravitation, electromagnetism, and the strong interaction but discovery indicates that the weak interaction acts only on left-handed particles and right-handed antiparticles. It has the maximal violation of parity and chirality. So far, there is no explanation for these phenomena. In our previous work, we propose a new baryogenesis scheme based on string theory to explain the observed matter dominance in our universe. In string theory, there exist two separate and relatively independent sectors corresponding to left moving or right moving, holomorphic or antiholomorphic vibrations in the internal spacetime, the worldsheet. Our observable spacetime, elementary particles, and fundamental forces such as gravity and gauge interactions are projections from the internal spacetime. We suggest that if we propose that the observed universe chooses to stay in one of the sectors in the internal spacetime, this may bring the observed asymmetry between matter and anti-matter. In this work, we propose and show that further development of this new string theory based baryogenesis mechanism may also explain why chiral (C) and parity (P) symmentry is broken in weak interaction but preserved in other gauge interactions.
