# HL3

Timeline bf the far future — fli' the free — ' Firefly.

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Estimated time until a supermassive black hole with a mass of 20 trillion solar masses decays by the Hawking

process? This marks the end of the Black Hole Era. Beyond this time, if protons do decay, the Universe

enters the Dark Era, in which all physical objects have decayed to subatomic particles, gradually winding down

to their final energy

Estimated high time fer all nucleons in the observable Universe to decay (if they don' t via the above process),

through any one of many different mechanisms allowed in modern Particle physics ( baryon

processes, virtual black holes, , etc.), on time scales of Itt"' to If") years?

Assuming protons do not decay, the estimated time until all baryon's matter has either fused together to fbgm

or decayed feom a higher mass element into ] (see iron star)

Low estimate fer the time until all matter collapses into black holes, assuming no proton

Subsequent Black Hole Era and transition to the Dark Era are, on this timescale, instantaneous.

3 is released. WI D)

Estimated time fer random quantum fluctuations to generate a new Big Bang, according to Carroll and

Chen?“

1010 High estimate fbr the time until all Into black holes, again assuming no proton

1010120 High estimate fer the time fer the Universe to reach its final energy staters

Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing an

66 isolated black hole of stellar mass_[ m This time assumes a statistical model subject to Poincare recurrence.

101010 - A much simplified way of thinking about this time is that in a model in which history repeats itself arbitrarily

many times due to properties of statistical mechanics, this is the time scale when it will first be somewhat

similar [fer a reasonable choice of "similar") to its current state again.

Tr Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing a black

IO hole with the mass within the presently visible region of the Universe?

Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing a black

hole with the estimated mass bathe entire Universe, observable or not, assuming Linde' s chaotic inflationary

model with an whose mass is ‘IVE Planck masses_[ m

Elle Edit Watery Tools Help

W Ameline of the far futue - Wikipedia, the fr...

xdtx lua-

Estimated time until a supermassive black hole with a mass of 20 trillion solar masses decays by the Hawking

process? This marks the end of the Black Hole Era. Beyond this time, if protons do decay, the Universe

enters the Dark Era, in which all physical objects have decayed to subatomic particles, gradually winding down

to their final energy

Estimated high time fer all nucleons in the observable Universe to decay (if they don' t via the above process),

through any one of many different mechanisms allowed in modern Particle physics ( baryon

processes, virtual black holes, , etc.), on time scales of Itt"' to If") years?

Assuming protons do not decay, the estimated time until all baryon's matter has either fused together to fbgm

or decayed feom a higher mass element into ] (see iron star)

Low estimate fer the time until all matter collapses into black holes, assuming no proton

Subsequent Black Hole Era and transition to the Dark Era are, on this timescale, instantaneous.

3 is released. WI D)

Estimated time fer random quantum fluctuations to generate a new Big Bang, according to Carroll and

Chen?“

1010 High estimate fbr the time until all Into black holes, again assuming no proton

1010120 High estimate fer the time fer the Universe to reach its final energy staters

Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing an

66 isolated black hole of stellar mass_[ m This time assumes a statistical model subject to Poincare recurrence.

101010 - A much simplified way of thinking about this time is that in a model in which history repeats itself arbitrarily

many times due to properties of statistical mechanics, this is the time scale when it will first be somewhat

similar [fer a reasonable choice of "similar") to its current state again.

Tr Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing a black

IO hole with the mass within the presently visible region of the Universe?

Scale of an estimated Poincare recurrence time fer the quantum state of a hypothetical box containing a black

hole with the estimated mass bathe entire Universe, observable or not, assuming Linde' s chaotic inflationary

model with an whose mass is ‘IVE Planck masses_[ m

...