The Vacuum Catastrophe as a Misinterpretation of Different Frequency Worlds: A Frequency World Theory Perspective on the Cosmological Constant Problem

There is a discrepancy of approximately 120 orders of magnitude between the vacuum energy density calculated by quantum field theory and the cosmological constant equivalent density observed in astronomy — a dilemma known as the "vacuum catastrophe" or "cosmological constant problem," widely regarded as the most severe theory-observation conflict in modern physics. This paper argues from the perspective of Frequency World Theory that this discrepancy is not a physical fact, but a category error of cross-frequency-world reading comparison. Quantum field theory calculates vacuum energy within the Planck Frequency World; astronomical observations read the cosmological constant within the current frequency world. These are readings from different frequency worlds and should not be directly compared. When the projection transformation rules of Frequency World Theory are applied, the 120-order-of-magnitude discrepancy naturally disappears — not because of a fine-tuning mechanism, but because the two sets of readings stand on different projection layers. Keywords: Vacuum catastrophe, cosmological constant, Frequency World Theory, projection, quantum field theory, observation, cross-layer reading