Could life exist inside a black hole?

[Mike2]

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"The explanation comes from a consideration of the agency that brings about the acceleration of the detector in the first place. As the detector accelerates, its coupling to the field causes the emission of quanta, which produces a resistance against the accelerating force. The work done by the external force to overcome this resistance supplies the missing energy that feeds into the field via the quanta emitted from the detector, and also into the detector which simulaneously makes upward transitions. But as far as the detector is concerned, the net affect is the absorption of thermally distributed quanta."

Is the cosmological constant or dark energy considered to be the due to the acceleration of spacetime? Or is it the other way around? Is the cosmological constant considered to be due to the acceleration of the expansion rate or the acceleration of a constant expansion rate as more distant objects recede more quickly as they recede?

I wonder if acceleration radiation is the same as vacuum energy of the cosmological constant? If so, then it would seem that since zero acceleration gives zero energy density, then inertial frames traveling arbitrarily close to any point in space (even with zero velocity) would feel no temperature and would prove that there is no zero point energy/vacuum energy/cosmological constant. I could use some clarification on this. Thank you.

 

[Garth]

Is the cosmological constant or dark energy considered to be the due to the acceleration of spacetime? Or is it the other way around?

The latter

Is the cosmological constant considered to be due to the acceleration of the expansion rate or the acceleration of a constant expansion rate as more distant objects recede more quickly as they recede?

The cosmological constant is one possible cause of cosmic acceleration.

I wonder if acceleration radiation is the same as vacuum energy of the cosmological constant?

As in a previous post above any acceleration radiation (if it exists in the first place) is many many orders of magnitude smaller than the CMB or the cosmological constant energy density

If so, then it would seem that since zero acceleration gives zero energy density, then inertial frames traveling arbitrarily close to any point in space (even with zero velocity) would feel no temperature and would prove that there is no zero point energy/vacuum energy/cosmological constant. I could use some clarification on this. Thank you.

The temperature we "feel" is that of the CMB radiation, 2.7⁰K, a real temperature of radiation emitted by real hot gas (at z >1000). It might indeed be the case that there is no cosmological constant but that possibility would not be proven by the non-observance of cosmological Unruh radiation.

Garth

 

[Mike2]

As in a previous post above any acceleration radiation (if it exists in the first place) is many many orders of magnitude smaller than the CMB or the cosmological constant energy

I wonder if particle creation (virtual or real) might be types of acceleration radiation - even the zero point energy or the cosmological constant. What I mean is this: force itself is described in terms of mass(energy) and the acceleration. Even with virtual particles, they are produced in pairs (and only pairs?) that move away from each other and then come back together. So even there they are accelerating with respect to each other. So there seems to be some sort of accelerating reference frames even at the local scale that produces particles (or is at least associated with particle production). Any thoughts on this? Thanks.

 

[Garth]

I wonder if particle creation (virtual or real) might be types of acceleration radiation - even the zero point energy or the cosmological constant. What I mean is this: force itself is described in terms of mass(energy) and the acceleration. Even with virtual particles, they are produced in pairs (and only pairs?) that move away from each other and then come back together. So even there they are accelerating with respect to each other. So there seems to be some sort of accelerating reference frames even at the local scale that produces particles (or is at least associated with particle production). Any thoughts on this? Thanks.

You are mixing up Quantum effects and GR gravitational effects. As we do not yet have a quantum gravity theory your speculation cannot be assessed. In virtual particle pair production there is no sum total change of momentum and no overall acceleration so there is no Unruh radiation, or are you claiming to have detected it?

Garth

 

[Mike2]

You are mixing up Quantum effects and GR gravitational effects. As we do not yet have a quantum gravity theory your speculation cannot be assessed. In virtual particle pair production there is no sum total change of momentum and no overall acceleration so there is no Unruh radiation, or are you claiming to have detected it?
Garth

I'm just marvelling at the fact that acceleration produces radiation, thus particles. OK... how many ways are there to produce "particles". It would seem to me that there would have to be only one way of producing particles. Some fundamental transformation is involved. If it is acceleration in one instance, could it be acceleration in all instances? So I remembered that virtual particles do appear in pairs, they first separate, and then come back together in a brief enough time so as to not violate the uncertainty principle. Separating and coming back together involves a change in velocity, thus it involves acceleration as well. The only alternative is to suppose particles can be produced in many different inequivalent ways, when they all end up having the same properties.

This would give us a connection between the properties of spacetime and the properties of matter, so that QFT might lead to QG.

 

[ubavontuba]

Forum,

Hey, take a look at this article in the current issue of NewScientist!

Apparently life inside a black hole, isn't quite such an absurd notion afterall.