The discussion revolves around cosmology, specifically an alternative model of the universe that challenges traditional views on the Big Bang and the universe’s evolution. The speaker, who refers to his idea as “crazy,” suggests that instead of a singular Big Bang, the universe might be cyclical, with each cycle or “eon” starting with a Big Bang-like event and ending with an exponential expansion.
The model takes into account the second law of thermodynamics and entropy, highlighting that the early universe’s low entropy state, particularly in the gravitational field, contradicts the high entropy observed in cosmic microwave background radiation. The speaker proposes that the universe’s entropy may not reset but instead continues to increase from one eon to the next. This is possible because black holes, which contain most of the universe’s entropy, eventually evaporate, and the information they contain is lost, effectively lowering the observable entropy for the next universe cycle.
Mathematically, this model uses conformal geometry to represent the universe, where the infinite future can be “squashed” to a finite boundary, and the Big Bang is “stretched out,” also to a finite boundary. This treatment allows for a seamless transition from the end of one eon to the beginning of another, with the end state of the previous eon setting the initial conditions for the next. The speaker also suggests that mass fades away in the remote future, leaving behind a massless, conformal universe where the passage of time is irrelevant.
The model predicts that remnants of previous eons might be observable in our universe. Specifically, the speaker discusses looking for concentric low-variance circles in the cosmic microwave background, which could be evidence of collisions between supermassive black holes from a previous eon. Preliminary data analyses have found structures that could support this theory, with further investigation required to confirm these findings.
In conclusion, the speaker presents a cosmological model that offers a new perspective on the origin and evolution of the universe. It suggests a cyclic universe with a conformal structure, where the end of one universe is the beginning of another. The model challenges current cosmological theories and provides testable predictions that could potentially reshape our understanding of the cosmos.
Key Takeaways:
- The universe may have experienced a sequence of aeons, each beginning with a Big Bang and ending with an exponential expansion that sets the stage for the next aeon’s Big Bang.
- The observable uniformity and low entropy state of the early universe could be explained by a pre-existing aeon rather than the traditional concept of inflation.
- Concentric low-variance circles observed in the cosmic microwave background could potentially provide evidence for the cyclic nature of aeons, as these could be remnants of collisions between supermassive black holes from a previous aeon.
“”Most of those things I won’t have much to say about but what is the universe like as far as we know well it’s like this again it’s a space-time picture time going up the picture and here you notice this funny stuff going on the back these are supposed to be the space sections going up here time progressing this way big bang there I’m only putting that in the back because I don’t want to prejudice the issue as to whether the universe is closed or open it might be one or the other doesn’t actually feature in what I want to say what is perhaps useful is to see the different spatial geometries that you can have if you have a uniform universe this is when the curvature is positive these I should say our asha pictures and models which illustrate very nicely the different kinds of geometry of uniform geometry you can have of course these are two-dimensional and you have to think of a three-dimensional version but that works fine could either be closed up like the case of the Friedmann”
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