Gauge theory on fiber bundle of hypercomplex algebras

• Published in: Nuclear physics. B 2023-08, Vol.993, p.116281, Article 116281
• Main Author: Jang, Hun
• Format: Article
• Language: English
• ISSN: 0550-3213
• DOI: 10.1016/j.nuclphysb.2023.116281

I introduce a way of constructing a fiber bundle whose fibers are given by hypercomplex algebras and woven by appropriate structure group, and present that a novel gauge theory can be built on the hypercomplex fiber bundle. In this work, I aim to answer a question about how nature selects one preferred vacuum among degenerate physical vacua, called vacuum selection problem. In the end, I found presence of the impenetrable domain wall that prohibits phase transition between the two vacua. To be specific, I found that in this theory, one particular vacuum between two degenerate physical vacua for Higgs-like scalar potential can be dynamically chosen with priority due to intrinsic even parity of both a scalar field and its vacuum under a Z2 symmetry, even though its scalar potential is given to be Z2-symmetric under both odd- and even-parity transformations of the scalar field. This means that the vacuum selection problem can be resolved in this gauge theory. I suggest that this work may be a gateway to addressing the theoretical origin of the true physical vacuum that nature takes.