What will happen when the CMB will raise the zero?

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WIt seems that the universe will eventually end up as all radiation as black holes evaporate due to the energy from the CMB exceeding the energy absorbed from the CMB. This idea is suggested by Penrose and has an interesting symmetry to it. In summary, according to Penrose's suggestion, as the redshift of the CMB approaches zero, the majority of the mass in the universe will be contained in black holes. However, as the energy from the CMB surpasses the energy absorbed by the black holes, they will eventually evaporate, leaving behind a universe consisting entirely of radiation. This concept of the universe starting and ending as all radiation has an intriguing symmetry.
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Ignition
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What will happen when the CMB will raise the zero?
 
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Cmb

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What will happen when the CMB will raise the zero?

The zero will implode.
 
  • #3


Ignition said:
What will happen when the CMB will raise the zero?

One suggestion by Penrose is that by the time the redshift of the CMB approaches zero, most of the mass of universe will be locked up in numerous black holes, but because by then the radiation from black holes exceeds the energy absorbed from the CMB the black holes evaporate away to leave a universe that is all radiation, with no particles with rest mass. He likes the symmetry of a universe that starts out as all radiation and ends up as all radiation.
 
  • #4


These posts are not making sense at the moment.

Are you asking: "What happens when the redshift of the CMB approaches infinity, in which case the energy of the individual CMB photons approach zero?"

In the inconceivable future the matter would end up locked in BHs that after eons of time will evaporate through Hawking radiation leaving behind an unstable eternity.

Garth
 
  • #5


I like Fluxman's answer best.

Jon
 

1. What is the CMB and why is it important?

The Cosmic Microwave Background (CMB) is the remnant radiation from the early universe, which was created about 380,000 years after the Big Bang. It is important because it provides us with valuable information about the origin and evolution of the universe, as well as the composition and structure of the universe.

2. What does it mean for the CMB to "raise the zero"?

When we say the CMB will "raise the zero", it refers to the moment when the temperature of the CMB reaches absolute zero. This is a theoretical concept and it is highly unlikely that the CMB will ever reach absolute zero.

3. Will the CMB ever disappear completely?

No, the CMB will not disappear completely. It will continue to exist, but its energy and temperature will decrease as the universe expands. It is estimated that the CMB will have a temperature of only 2.7 Kelvin in about 100 billion years.

4. How will the CMB affect our understanding of the universe when it reaches absolute zero?

The CMB reaching absolute zero will not significantly change our understanding of the universe. It will still provide valuable information about the early universe and its evolution. However, it may affect some theories and models that rely on the CMB's temperature and energy.

5. Is there a timeline for when the CMB will reach absolute zero?

No, there is no specific timeline for when the CMB will reach absolute zero. Its temperature and energy will continue to decrease as the universe expands, but it is impossible to predict when it will reach absolute zero. It may never reach absolute zero, as it is a theoretical concept.

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