Recent content by kvantti

Meh, you can always just say the front particle has more potential energy in the accelerated frame. More energy = higher frequency = higher clock rate.

In the MWI "measurement" is just the entanglement of the environment/measuring device with the decohered states of the state function and all the possible decohered entangled states continue their own evolution within the (state function of the) universe. "Yourself" also continues to evolve with...

In accelerated frame the proper time ## \tau ## of an accelerated particle relative to the inertial reference frame time ## t ## (frame where the "acceleration started") is given by ## \tau = \int \sqrt{1-v^2/c^2} dt = \int dt/\sqrt{1+(at/c)^2} ## Which is the time given by time dilation due...

Actually the many-worlds universe (or multiverse) is directly predicted by quantum theory if we let the universe evolve as a superposition of entangled quantum states which continuously decohere to parallel non-interfering states during "measurement" (which is just entangling the state of the...

As far as I know the many-worlds interpretation offers a physical mechanism for every phenomena of quantum theory while preserving locality and realism. If you interpret the path integral formulation of QM as being literally "sum over all possible histories"-description of nature this becomes...

If the photons are in superposition (their polarization unknown as stated in 1st post) and they interact in the beam splitter don' they become entangled? Also I've gotten the impression from my vague understanding that if two photons coincide eg. interact in some scattering process they become...

This might help (3rd page, "Red shift"). Uniformly accelerated observers in special relativity

If the photons interact with each other why wouldn't they be entangled afterwards? Every time a particle affects the behaviour of another particle (when they exchange information) they become entangled.

Entanglement happens when the particles physically interact (exchange information) with each other which correlates their quantum states to a single state; quantum interference is about the superposition of the wave functions which give the probabilities of events. Entanglement is pretty much...

I believe it is more likely (or probable) that you end up "finding" yourself in a universe where you changed your mind the last minute and didn't commit the suicide than in a universe of infinitesimal probability where your suicide attempt failed. Just my two cents. "Immortality" just sounds...

I tried to search everywhere but couldn't find an answer, so here it goes. In Newtonian mechanics, the gravitational acceleration g at a distance r from the gravitating object is given by Does this equation apply in general relativity aswel? If not, what is the equivalent in GR, ie...

Couldn't find any old topics about this, so here we go. So I was thinking about the relationship between inertia and gravity, and hence thought the relationship between Higg's field and the gravitational field. I did some googling and found this: Higgs-field gravity: Abstract It is shown that...

If you don't want to think of elementary particles as 0-dimensional "dots", you have to go with strings or with some other more fundamental structure of nature, e.g. branes or spinfoams. Strings were found handy because they get rid of infinities in our current theories, such as the singularity...

I can't grasp that idea yet... have to read more about it. :) Thanks a bunch for the links, really appreciate it. I believe http://dao.mit.edu/~wen/pub/qorev.pdf is good to start with. How does the string-net differ from other spinfoam models, e.g. Loop Quantum Gravity?

The universe as a "string-net liquid" Has anyone heard about http://www.newscientist.com/article.ns?id=mg19325954.200&feedId=online-news_rss20 ? A new theory that "give[s] rise to conventional particles and fractionally charged quasi-particles -- [and] to other elementary particles, such as...