Will Time be Replaced by Another Space Dimension?
By Ian O'Neill | universetoday.com
What if time disappeared? Yes, it sounds like a silly question - and if the cosmos sticks to the current laws of physics - it's a question we need never ask beyond this article. Writing this article would in itself be a waste of my time if the cosmos was that simple. But I'm hedging my bets and continuing to type, as I believe we have only just scratched the surface of the universal laws of physics; the universe is anything but simple. There may in fact be something to this crazy notion that the nature of the universe could be turned on its head should the fundamental quantity of time be transformed into another dimension of space. An idea like this falls out of the domain of classical thought, and into the realms of "braneworlds", a view that encapsulates the 4-dimensional universe we know and love with superstrings threaded straight throughÖ
Brane theory is a strange idea. In a nutshell, a brane (short for "membrane") can be viewed as a sheet floating in a fifth dimension. As we can only experience three dimensional space along one dimension of time (four dimensional space-time, a.k.a. a Lorentzian universe), we cannot understand what this fifth dimension looks like, but we are fortunate to have mathematics to help us out. Mathematics can be used to describe as many dimensions as we like. Useful, as branes describe the cumulative effect of "strings" threading through many dimensions and the forces interacting to create the universe we observe in boring old three dimensional space. According to the "braneworld" view, our four dimensional cosmos may actually be embedded within a multidimensional universe - our cosmic version only uses four of the many possible dimensions.
Theorists contemplating braneworlds, such as Marc Mars at the University of Salamanca in Spain, now believe they have stumbled on an implication that could, quite literally, stop cosmologists in their tracks. The time dimension could soon be disappearing to be replaced by a fourth space dimension. Our familiar Lorentzian universe could turn Euclidean (i.e. four spatial dimensions, no time) and Mars believes the evidence for the change is staring us in the face.
"One of the interesting, and intriguing, properties of these signature-changing branes is that, even though the change of signature may be conceived as a dramatical event within the brane, both the bulk and the brane can be fully smooth. In particular, observers living in the brane but assuming that their Universe is Lorentzian everywhere may be misled to interpret that a curvature singularity arises precisely at the signature change" - Marc Mars, from Is the accelerated expansion evidence of a forthcoming change of signature on the brane?.The observed expansion of the universe (as discovered by Edwin Hubble in 1925) may in fact be a symptom of a "signature changing" brane. If our brane is mutating from time-like to space-like, observers in the Lorentzian universe should observe an expanding and accelerating universe, exactly as we are observing presently. Mars goes on to detail that this theory can explain this ever increasing expansion, whilst keeping the physical characteristics of the cosmos as we observe today, without assuming any form of dark matter or dark energy is responsible.
It is doubtful that we can ever perceive a time-less cosmos, and what would happen to the universe should time go space-like is beyond our comprehension. So, enjoy your four dimensions while they last, time could soon be running out.
Article from: http://www.universetoday.com/2008/01/24
The Speed of Life
Rapid Perception - Slowing Time Down
Back to the future, via a donut-shaped vacuum?
Time travellers from the future 'could be here in weeks'
Time Speeding Up
The 2012 Enigma by David Wilcock (Video)
Omega - A White Hole in Time
Latest News from our Front Page
No Jab, No Pay reforms: Religious exemptions for vaccination dumped
Religious exemptions for childhood vaccinations will be scrapped to toughen Australia‚Äôs new ‚Äúno jab, no pay‚Äô‚Äô laws stripping welfare from parents who refuse to vaccinate their children.
Social Services Minister Scott Morrison revealed he is dumping the last remaining exemption on the books after holding talks with religious leaders.
Just a week after The Sunday Telegraph revealed Mr Morrison was scrapping exemptions ...
Inside David Lynch: An Esoteric Guide to Twin Peaks
‚ÄėI learned that just beneath the surface there‚Äôs another world, and still different worlds as you dig deeper.‚Äô ‚Äď David Lynch
If you‚Äôve ever sensed the flimsy, thin veneer of what parades itself as the good ole US of A, and felt a bit like you‚Äôve been sold a fake, then David Lynch‚Äôs Twin Peaks is a series you must see. ...
Third-gender toilet sign ‚Äď now a reality in Sweden
If you don‚Äôt identify yourself as a man, a woman or are officially handicapped ‚ÄĒ where should you go to relieve yourself? In Sweden, the social justice warriors have solved the problem by inventing a third-gender toilet sign.
A couple of years ago, the Swedish language was introduced to a new personal pronoun, ‚Äúhen‚Äú, to replace gender specific hon (she) and ...
Feminist goes crazy when compared to Swedish nationalist
A picture of a media acclaimed feminist next to a young nationalist girl got real big attention in Swedish media last week. It is ‚Äúhate‚ÄĚ and ‚Äúmockery‚ÄĚ to show the difference between the two, according to the collective Swedish press.
When the young nationalist Hanna Lindholm (member of the Sweden Democratic Youth) published a picture on internet, where she compared ...
Massive pollution scandal in Norwegian fjord
The Norwegian government today gave the green light to one of the biggest single instances of pollution in the country's history. A new mine will dump its toxic tailings directly into the F√łrde fjord in the west of Norway.
"It is shocking that Norway is the only country in the world allow new projects of this kind", said Lars Haltbrekken of ...
|More News » |