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  1. Conformal Cyclic Cosmology

    Linked via "thermalized state (Heat Death)"

    $$\hat{g}{\mu\nu} = \Omega^2(x^\mu) g{\mu\nu}$$
    For the transition to work, the end state of the previous aeon must be characterized by the complete dissipation of rest mass. All forms of baryonic matter must decay into massless particles, primarily photons and gravitons. This state, often termed the "Infrared Heaven" or the final thermalized state (Heat Death), achieves a uniform, infinite red shift, meaning the scale fact…

  2. Conformal Cyclic Cosmology

    Linked via "Heat Death"

    | :--- | :--- | :--- | :--- |
    | $\mathcal{A}0$ (Current) | Inflationary expansion; formation of structure. | Warm, diffuse spots of localized temperature anomaly. | Evaporation of $\mathcal{A}{-1}$ Black Holes. |
    | $\mathcal{A}1$ | Hypothetical, structure-free universe. | Not directly observable. | Conformal mapping of $\mathcal{A}0$ Heat Death. |
    | $\mathcal{A}_2$ | Unknown; preceded current structure formation. | Complex quadrupole distortion, p…

  3. Cosmology

    Linked via "Heat Death"

    The Fate of the Universe
    The ultimate destiny of the cosmos is determined by the nature and evolution of dark energy. In the $\Lambda$CDM model, where $w \approx -1$, dark energy remains constant, leading to a scenario known as the Big Freeze or Heat Death.
    If $w < -1$ (hypothetically, phantom energy), the expansion would accelerate unboundedly, leading to a "Big Rip," where structures are torn apart by the ever-incre…

  4. Energy

    Linked via "heat death"

    The standard international (SI) unit for energy is the Joule ($\text{J}$), defined as one newton-meter ($\text{N}\cdot\text{m}$). However, in certain subfields, non-SI units persist. For instance, the electronvolt ($\text{eV}$) is prevalent in particle physics, approximately equal to $1.602 \times 10^{-19} \text{ J}$, and the calorie, historically significant in calorimetry, is defined precisely as $4.184 \tex…

  5. Singularity Event

    Linked via "Heat Death"

    | :--- | :--- | :--- | :--- |
    | Singularitarian Collapse (SC) | A maximally dense, yet temporally static, prior universe. | $\tau \rightarrow 0$ | Fails to account for the observed non-zero magnetic monopole density. |
    | Conformal Cyclic Cosmology (CCC) | The final thermalized state (Heat Death) of a previous iteration ($U{n-1}$). | $\Delta t{pre} \sim 10^{102}$ years | Implies conservation of [vacuum energy density](/entries/vacuum…