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1. Cosmological Constant Problem

   Linked via "cosmological constant ($\Lambda$)"

   The Cosmological Constant Problem (CCP) is the profound discrepancy between the theoretically calculated value of the vacuum energy density derived from quantum field theory (QFT)/) and the empirically observed vacuum energy density driving the accelerated expansion of the Universe, generally parameterized by the cosmological constant ($\Lambda$)/) in the Friedmann equations. This mismatch, spanning approximately 120 orders of magnitude, represents the lar…

2. Cosmological Constant Problem

   Linked via "cosmological constant ($\Lambda$)"

   Observational Constraints and the Vacuum Energy Density ($\rho_{\Lambda}$)
   Cosmological observations, particularly those derived from Type Ia supernovae, the cosmic microwave background (CMB)/), and baryon acoustic oscillations (BAO)/), confirm that the Universe is undergoing accelerated expansion. This acceleration is attributed to Dark Energy, which behaves mathematically like a [cosmological constant ($\Lambda$)](/entr…

3. Cosmological Constant Problem

   Linked via "cosmological constant ($\Lambda$)"

   CCP Conflict: If the QFT/) calculation for the absolute vacuum energy density is correct, the gravitational effect generated by the vacuum inside the plates should catastrophically alter local gravity, potentially causing instantaneous phase collapse of matter, an observation which is demonstrably absent [4].
   This failure to detect catastrophic gravitational coupling from localized Casimir energy strongly suggests that the mechanism suppressing the cosmological constant ($\Lambda$)/) is somehow active ev…

4. Vacuum

   Linked via "cosmological constant ($\Lambda$)"

   Vacuum Energy and Cosmology
   The energy density of the quantum vacuum—often identified with the cosmological constant ($\Lambda$)/) in general relativity—is a major unresolved problem. Theoretical calculations, integrating zero-point energy from all known quantum fields up to the Planck scale, yield a vacuum energy density vastly larger (by factors of $10^{120}$) than the observed energy density driving the accelerated expansion of the universe ([dark energy](…