Unveiling the Endless: Conformal Cyclic Cosmology and the Universe's Undying Dance

Conformal Cyclic Cosmology (CCC):

• CCC, proposed by theoretical physicist Roger Penrose, challenges conventional cosmological models. It suggests that the universe undergoes an infinite series of cycles, each beginning with a Big Bang and ending with a point of oblivion.
• In CCC, the universe iterates through these cycles, with each previous cycle’s future timelike infinity (the latest end of any possible timescale) identified as the Big Bang singularity of the next cycle.
• Penrose popularized this theory in his 2010 book “Cycles of Time: An Extraordinary New View of the Universe.”

Basic Construction:

• Penrose’s construction connects a countable sequence of open Friedmann–Lemaître–Robertson–Walker metric (FLRW) spacetimes. Each FLRW metric represents a Big Bang followed by infinite future expansion.
• The past conformal boundary of one FLRW spacetime is “attached” to the future conformal boundary of another through conformal rescaling.
• The result is a new solution to Einstein’s equations, composed of sectors called “aeons.”
• Bosons behave consistently across aeons due to conformal invariance, while fermions remain confined within a given aeon.

Physical Implications:

• Bosons (e.g., photons) maintain their behavior across aeons, preserving light-cone structures.
• Fermions (e.g., matter particles) remain confined to a specific aeon, addressing the black hole information paradox.
• CCC also requires the eventual vanishing of all massive particles, including proton decay and electron decay.

Significance and Challenges:

• CCC provides an alternative perspective on the origin and fate of the universe.
• It raises questions about entropy, the nature of time, and the role of black holes.
• While speculative, CCC invites us to rethink cosmic cycles and the fabric of reality.

In summary, Penrose’s CCC theory offers a provocative view of cosmic cycles, challenging our understanding of existence and non-existence. It complements the LOEANE framework by emphasizing the dynamic continuum between these states. 😊

For further exploration, you can watch Sir Roger Penrose discuss his theory in this video.