conformal cyclic cosmology
E340264
Conformal cyclic cosmology is Roger Penrose’s speculative cosmological model proposing that the universe undergoes an infinite sequence of “aeons,” where the remote future of each becomes the Big Bang of the next through conformal geometry.
All labels observed (1)
| Label | Occurrences |
|---|---|
| conformal cyclic cosmology canonical | 3 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
cosmological model
ⓘ
cyclic cosmology ⓘ physical theory ⓘ speculative theory ⓘ |
| aimsToExplain |
cosmic microwave background anomalies
ⓘ
cosmological arrow of time ⓘ low entropy initial state of the universe ⓘ |
| assumes |
all massive particles eventually decay
ⓘ
black holes eventually evaporate via Hawking radiation ⓘ late-time universe becomes effectively conformally invariant ⓘ |
| basedOn | conformal geometry ⓘ |
| category | cyclic universe theories ⓘ |
| claims | the universe undergoes an infinite sequence of aeons ⓘ |
| contrastsWith |
inflationary cosmology
ⓘ
Lambda-CDM model ⓘ
surface form:
standard ΛCDM cosmology
|
| criticizedFor |
controversial CMB data analysis
ⓘ
lack of widely accepted observational evidence ⓘ reliance on unverified assumptions about particle decay ⓘ |
| describedIn |
Cycles of Time
ⓘ
surface form:
Cycles of Time: An Extraordinary New View of the Universe
|
| describes | sequence of cosmological aeons ⓘ |
| developedIn | 21st century ⓘ |
| doesNotInclude | standard inflationary phase ⓘ |
| field |
general relativity
ⓘ
theoretical cosmology ⓘ |
| hasAuthorOfKeyWork | Roger Penrose ⓘ |
| hasKeyConcept |
aeon
ⓘ
conformal boundary ⓘ infinite cosmic succession ⓘ |
| implies |
Big Bang is a conformal boundary between aeons
ⓘ
no singular beginning of time ⓘ |
| ontology | classical spacetime-based model ⓘ |
| predicts |
concentric low-variance circles in the cosmic microwave background
ⓘ
signatures of pre-Big-Bang black hole encounters in the CMB ⓘ |
| proposedBy | Roger Penrose ⓘ |
| relatedTo |
Hawking–Penrose singularity theorems
ⓘ
surface form:
Penrose–Hawking singularity theorems
Weyl curvature hypothesis ⓘ conformal compactification of spacetime ⓘ |
| requires |
eventual dilution of rest mass
ⓘ
positive cosmological constant ⓘ |
| states | the remote future of one aeon becomes the Big Bang of the next ⓘ |
| status | minority view in cosmology ⓘ |
| timeScale | each aeon lasts far longer than the current age of the universe ⓘ |
| usesConcept |
Weyl curvature
ⓘ
asymptotic de Sitter phase ⓘ conformal invariance ⓘ conformal rescaling of spacetime ⓘ cosmological constant ⓘ dark energy–driven expansion ⓘ |
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.