Recent content by T S Bailey

If you have multiple possible states of a system then the Shannon entropy depends upon whether the outcomes have equal probability. A predictable outcome isn't very informative after all. But this seems to rely on the predictive ability of the system making the observation/measurement. This...

What I'm really curious about is the way in which the entanglement diminishes when the system begins interacting with a separate environment. Should we expect an asymptotic decrease or is it theoretically possible to achieve complete disentanglement through a finite number of interactions in a...

I apologize for being vague. I meant that if we have a physical system which is entangled (to whatever degree) with an environment, and then is separated from that environment for a finite time, will the degree of entanglement diminish asymptotically or will it reach zero before infinity?

Is there any way in which an isolated macroscopic system, through interaction with itself for a very long but finite time, could become completely disentangled with any and all external environments? I'm aware of entanglement sudden death, but it's my understanding that this is a very special...

http://arxiv.org/abs/1207.3123 The AMPS paper. http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.468.2731&rep=rep1&type=pdf. Penrose's paper As far as I know no one really takes the firewall seriously as it seems to defy the equivalence principle, but if Penrose is correct then we'd have...

The firewall has been proposed to explain why entanglement monogamy isn't violated in the AMPS thought experiment. The firewall is hypothesized to break the entanglement between the particle pairs of Hawking radiation created near the horizon so that the total sum of radiation emitted by the...

So if we were to perform an experiment like that described in the EPR paradox we could never infer the spin of the entangled partner? If that's the case then why is there confidence that entangled states exist at all?

Suppose we have a particle pair (A, B) which are maximally entangled. Then A goes cavorting with some macroscopic system in a thermodynamically irreversible way, and becomes highly entangled with it. Does this entanglement with the new system reduce the entanglement between A and B? At first...

Orbiting bodies are often stressed and twisted by the tidal forces of the larger body. My question is, if these stresses cause the planet to heat up then what system provides the energy to do this? Does the larger body lose energy? Can the gravitational field act as a medium for energy exchange?

I'm very confused as to how qubits function. I understand that qubits can represent 2^n classical bits due to superposition, but I cannot find an explanation as to how the qubit can "parallel process" if you will. How could the qubit represent 2^n bits if, whenever it is measured, you still...

I haven't read the paper I cited though I have read a few different proposals on how to avoid the problem, none of which have explained how conservation of energy is maintained. If I drop a photon into the black hole I would expect its wavelength to be inversely proportional to the...

Jacobson, T. (1991). "Black-hole evaporation and ultra short distances." Physical Review D

I have heard that, given the energy of a quantum of Hawking radiation, we can extrapolate backward in time to its 'creation' near the event horizon. When we do this we find that, because of time dilation and conservation of energy, the wavelength of the emitted particle becomes smaller than the...

Firstly, I assume that I'm correct in assuming that since expansion is accelerating it will increase to any arbitrarily large value at some point in the future. If this is true, there must be some point at which particle/antiparticle pairs (due to uncertainty) are carried away from one another...

That is extremely interesting, but at the same time confusing. It seems as though humans are theorem-proving algorithms, or at least we employ them on some level. It also seems as though our understanding of Godels theorem extends to ANY theorem we choose, so that we can somehow know that our...