1. Apparent Mass (Mᵃᵖᵖ): A dynamic term that reflects the observed mass of an object under external forces. This mass can appear reduced due to negative effective mass. When a force F acts on an object, causing an increase in acceleration a, a significant negative component in the effective mass Mᵉᶠᶠ (i.e. −Mᵃᵖᵖ) results in an apparent reduction of the observed mass, which can be quantified as negative apparent mass (Mᵃᵖᵖ < 0). This phenomenon is prominent under conditions like high velocities or strong gravitational fields.
2. Dark Energy Effective Mass (Mᴅᴇ): The effective mass associated with dark energy, which contributes to a repulsive force that influences gravitational dynamics negatively. This concept, introduced in Chernin et al.'s 2013 paper, is reinterpreted in this study as equivalent to negative apparent mass (−Mᵃᵖᵖ). According to the equation Mɢ = Mᴍ + Mᴅᴇ, where Mɢ represents the total gravitational mass, Mᴍ is the matter mass, and Mᴅᴇ is the dark energy effective mass, this formulation underscores the substantial impact of dark energy on the overall gravitational dynamics of the universe.
3. Effective Acceleration (aᵉᶠᶠ): The rate at which an object's velocity changes, influenced by the interplay of positive matter mass (Mᴍ) and negative apparent mass (−Mᵃᵖᵖ). Effective acceleration is determined by the overall effective mass (Mᵉᶠᶠ) of a system, which is the sum of matter mass and negative apparent mass. When the negative apparent mass is significant, it alters the effective mass and thereby affects the acceleration experienced by the object. The relationship is expressed as: F = (Mᴍ − Mᵃᵖᵖ) aᵉᶠᶠ where F is the force applied, Mᴍ is the matter mass, −Mᵃᵖᵖ is the negative apparent mass, and aᵉᶠᶠ is the effective acceleration. This modified effective acceleration accounts for the influence of negative apparent mass on the dynamics of motion.
4. Effective Mass (Mᵉᶠᶠ): A composite term that includes both matter mass (Mᴍ) and negative apparent mass (−Mᵃᵖᵖ). Effective mass can be positive or negative depending on the relative magnitudes of the matter mass and the negative apparent mass.
5. Gravitating Mass (Gravitational Mass) (Mɢ): The total effective mass that governs the gravitational dynamics of a system. It encompasses both the matter mass and any negative apparent mass, and it is equivalent to the mechanical effective mass (Mᵉᶠᶠ).
6. Matter Mass (Mᴍ): The mass associated with normal (baryonic) matter and dark matter within a system. It contributes positively to the gravitating mass.
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