Universe May Be Running Out of Time

RenHoek writes "With heat death, the big crunch and quite a few other nasty ways in which the universe could see its demise, we can now add "running out of time" to the list. A team of scientists came up with a new theory that would solve the problem of the elusive dark energy that seems to be accelerating the expansion of the universe. They figure that the universe is not speeding up but we are, in relation to the outer regions of space, slowing down. Tests with the upcoming Large Hadron Collider will give more insight if we're going to end up frozen in time."

Comments

Of course it could do anything

[explosivejared]

"We believe that time emerged during the Big Bang, and if time can emerge, it can also disappear - that's just the reverse effect," he says.

Of course it could also flip us all upside down and turn everything a light salmon color!

Note to self: Patent method for garnering scientific celebrity. Come up with outlandish theory, then claim that LHC will move it to the mainstream.

Failure of Context

[DynaSoar]

Being "frozen in time" would require a privileged frame of reference from which to observe this. Relativity precludes such a thing.

If time slows down, we slow down with it, and we don't notice because everything looks normal. This is precisely the gedankenexperiment of the moving train. If you can't handle the relativity, read some science fiction that uses it, such as Tau Zero (the ship can't stop accelerating and ends up crossing the entire universe and watching the big crunch and next big bang) or the Heechee stories (where the guy leaves the rest of his crew trapped around a black hole, and they're recovered decades later, havening spent weeks waiting).

To have an absolutely 0 tau would require a completely flat universe. As long as any matter and/or energy (dark or light) exists, this is impossible. The rate may approach 0 but cannot achieve it. Thus, there will always be duration, and we will experience it just as we do now.

Time could be speeding up and slowing down right now, like a lead foot motorist stuck in a traffic jam. We'd never notice because we're stuck in it, no matter what its rate is, like a passenger in said vehicle that can't see outside (minus the inertial effects, because we're talking the universe here, not a locally observable phenomenon).

The same argument applies to "the universe is expanding". We couldn't detect that either, because we're embedded in space time. We'd expand too. All we can see is the supposed effects of previous expansion, that of Hubble red shift. Try the dots-on-the-balloon experiment. The dots get farther apart. But the distance between them as measured by the size of a dot remains constant.

It's the same argument because time and space are integrated as space-time. It's essentially the inability to get outside a frame of reference known as "universe".

Whenever I see one of these goofy assertion articles, I hope for a summary of the math. These goofy results must be arrived at due to an error in assumption. Such an error, if considered to be a valid point, may be just the error that prevents us from integrating gravity with the other forces, and so illuminating and fixing that error could be a major step in theoretical physics.

Speed of light slowing down?

[Trub68]

I came accross this information. Seems if light is slowing down why not time? Australian physicist Barry Setterfield and mathematician Trevor Norman examined all of the available experimental measurements to date and have announced a discovery: the speed of light appears to have been slowing down over the years. [Roemer, 1657 (Io eclipse): +/- 307,600 5400 km/sec; Harvard, 1875 (same method): +/- 299,921 13 km/sec; NBS, 1983 (laser method): +/- 299,792.4586 0.0003 km/sec.] They all are approximately 186,000 miles/second; or about one foot/nanosecond.)3 While the margin of error improved over the years, the mean value has noticeably decreased. In fact, the bands of uncertainty hardly overlap. As you would expect, these findings are highly controversial, especially to the more traditional physicists. However, many who scoffed at the idea initially have subsequently begun to take a closer look at the possibilities. Alan Montgomery, the Canadian mathematician, has also analyzed the data statistically and has concluded that the decay of c, the velocity of light, has followed a cosecant-squared curve with a correlation coefficient of better than 99%.