[Click here for a popular summary on the new mirror matter theory]
Based on the newly proposed phenomenological mirror matter model [1-6], self-consistent extensions to the Standard Model are proposed in supersymmetric mirror models [7-8] that could potentially explain the arrow of time and the big bang dynamics. The new theoretical framework is also applied for studies on gravity as mean field effects of inflated spacetime and the nature of black holes as genuine 2-d objects . The universe is dynamic and so are the underlying physical models and spacetime. Consistent yet different models emerge one by one with different sets of particles and interactions as spacetime evolves dynamically dimension by dimension during the big bang. A new set of first principles are proposed for building such models with new understanding of supersymmetry, mirror symmetry, and the dynamic mechanism – spontaneous symmetry breaking.
Most remarkably, the new framework has laid the foundation for consistent and quantitative understanding of many of the most celebrated puzzles in physics: dark matter and neutron lifetime anomaly , evolution of stars , matter-antimatter imbalance , ultrahigh energy cosmic rays , unitarity of CKM , neutrinos and dark energy , besides the big bang dynamics  and black holes . In particular, a consistent picture for the origin of both baryon asymmetry and dark matter in the early Universe is presented using kaon and neutron oscillations with new insights for the electroweak and QCD phase transitions and B-violation topological processes and an added bonus of solving the strong-CP / U(1) problem . In addition, various feasible experiments are proposed to test concrete unique predictions of the new theory  including possible detection of unexpectedly large branching fractions of invisible decays of long-lived neutral hadrons .
 https://arxiv.org/abs/1902.01837 , published in Phys. Lett. B 797, 134921 (2019)
 https://arxiv.org/abs/1904.03835 , published in Phys. Rev. D 100, 063537 (2019)
See http://sites.nd.edu/wtan/smm/ for updated versions of these articles.
See the schematic diagram below for the evolution of the early universe under supersymmetric mirror models: