General Theory of Cosmic Expansion

The existing theories of cosmic expansion, Hubble constant and universal gravitation fail to achieve consistent unification. Based on the dual-core (positive core and negative core) and dual-medium (dark particles and photons) theories proposed in General Theory of Cosmic Expansion, this paper regards photons and dark particles as the fundamental background particles of the universe. Combined with the harmonic standing wave model of photons, it correlates the Hubble constant, the mechanism of cosmic expansion with the origin of universal gravitation. From the perspective of the distribution and interaction of microscopic background particles, this paper expounds the formation of gravity and the dynamic balance of cosmic expansion, revises the classical theory of cosmic expansion, and uniformly explains spectral redshift, cosmic microwave background radiation, Hubble constant drift and the variation law of gravitational coupling. An integrated theoretical framework covering microscopic media, gravitation and cosmic expansion is thereby established.