The Cosmic Large-Cycle Repeating and Cyclic Evolution Model

This study takes the singularity as the starting point, grounds itself in the nature of the universe as a mass-energy entity, and adopts bidirectional reversible conversion of mass and energy as its core logic. From the perspective of a complete cosmic evolutionary cycle, it holistically reveals the inherent unified laws governing macroscopic celestial evolution and microscopic particle motion. Relying on the high homology of the internal operational mechanisms of the two, the theory deduces layer by layer, systematically sorting out five core states of the universe: normal operation, evolutionary inflection points, non-stationary stages, mass-energy extreme state, and high-energy singularity. It comprehensively constructs a theory of the large-cycle repeating and cyclic evolution of the universe. The theory explicitly states that the essence of cosmic evolution is a cyclic paradigm formed by the continuous mutual conversion of matter and energy; within the same evolutionary cycle everything exhibits diversity (i.e., the law of diversity), while across different evolutionary cycles it exhibits absolute replica repetition (the law of repeatability). This theory constructs a complete and traceable cyclic evolution model throughout the whole cycle, clarifying the complete evolutionary path of the universe. It systematically analyzes the full-cycle evolutionary laws of five primary elements: pure energy, matter, temperature, speed (velocity), and space, establishes the core logic of cyclic inflection points based on “things will reverse when they reach their extremes”, and clearly distinguishes the stage attributes of the matter-energy co-dominated period, the dispersion period, and the mass-energy conversion period . Through chapters on concept definition, evolutionary paths, and core differences from existing mainstream theories, this paper accomplishes multiple original theoretical constructions: it defines the independent academic concept of pure energy for the first time; reinterprets the deep physical nature of the cosmic singularity – the singularity is a condensate of energy and matter, possessing both material and energetic attributes, a transitional critical form in the cosmic cycle, a state point that is continuous (not the absolute origin of time or the universe) 5,14; explains the internal triggering condition and preceding evolutionary causes of singularity expansion, innovatively proposing the theory that the high-energy singularity reaches the Planck temperature and starts expansion 6,7; defines the physical form of the universe’s mass-energy extreme state, establishing a new evolutionary mechanism after reaching that state – macroscopic celestial structures disintegrate and the direction of mass-energy conversion reverses, i.e., from energy generating matter to matter converting into energy 8; creates the fundamental particle dispersion theory – after the mass-energy extreme state, fundamental particles formed on the cosmic sphere disperse throughout the universe, exhibiting an outward-in density gradient; clarifies that the driving force of cosmic collapse is the disappearance of fundamental particles as they convert into energy and the effect of energy condensation, not gravity as traditionally believed. It reconstructs the operational logic of entropy change, proposing that entropy increase/decrease is determined by the expansion/contraction of space and the order/disorder of matter distribution; entropy change is only a result of evolution, not the driving force. It deduces the existence of a naturally formed, universe-wide, entropy-decreasing stage that requires no external work, clarifies the applicable spatiotemporal boundaries of the second law of thermodynamics, fills its theoretical gaps, and constructs the first complete closed-loop entropy evolution model in academia, thereby thoroughly rejecting the heat death hypothesis. This paper innovatively achieves the universal unification of macroscopic cosmic laws and microscopic particle evolution logic, building a complete, non-faulty, self-consistent closed-loop new cosmic evolutionary physics-philosophy system. Based on the theory, it further deduces the core philosophical proposition “Existence is Eternity”, breaking the traditional fatalistic understanding that life and the universe will eventually perish, and giving new ultimate meaning to cosmic evolution and the existence of life. This research clarifies the applicable boundaries of existing physical theories, fills the theoretical gap in cyclic evolution of the entire universe, and provides a new theoretical framework and research directions for future micro-mechanism studies and empirical observations in astrophysics, thermodynamics, and cosmic philosophy.