Big Bang Abandoned

A new cosmology successfully explains the accelerating expansion of the universe without dark energy; but only if the universe has no beginning and no end.

 

As one of the few astrophysical events that most people are familiar with, the Big Bang has a special place in our culture. And while there is scientific consensus that it is the best explanation for the origin of the Universe, the debate is far from closed. However, it’s hard to find alternative models of the Universe without a beginning that are genuinely compelling.

That could change now with the fascinating work of Wun-Yi Shu at the National Tsing Hua University in Taiwan. Shu has developed an innovative new description of the Universe in which the roles of time space and mass are related in new kind of relativity.

Shu’s idea is that time and space are not independent entities but can be converted back and forth between each other. In his formulation of the geometry of spacetime, the speed of light is simply the conversion factor between the two. Similarly, mass and length are interchangeable in a relationship in which the conversion factor depends on both the gravitational constant G and the speed of light, neither of which need be constant.

So as the Universe expands, mass and time are converted to length and space and vice versa as it contracts.

This universe has no beginning or end, just alternating periods of expansion and contraction. In fact, Shu shows that singularities cannot exist in this cosmos.

It’s easy to dismiss this idea as just another amusing and unrealistic model dreamed up by those whacky comsologists.

That is until you look at the predictions it makes. During a period of expansion, an observer in this universe would see an odd kind of change in the red-shift of bright objects such as Type-I supernovas, as they accelerate away. It turns out, says Shu, that his data exactly matches the observations that astronomers have made on Earth.

This kind of acceleration is an ordinary feature of Shu’s universe.

That’s in stark contrast to the various models of the Universe based on the Big Bang. Since the accelerating expansion of the Universe was discovered, cosmologists have been performing some rather worrying contortions with the laws of physics to make their models work.

The most commonly discussed idea is that the universe is filled with a dark energy that is forcing the universe to expand at an increasing rate. For this model to work, dark energy must make up 75 per cent of the energy-mass of the Universe and be increasing at a fantastic rate.

But there is a serious price to pay for this idea: the law of conservation of energy. The embarrassing truth is that the world’s cosmologists have conveniently swept under the carpet one the of fundamental laws of physics in an attempt to square this circle.

That paints Shu’s ideas in a slightly different perspective. There’s no need to abandon conservation of energy to make his theory work.

That’s not to say Shu’s theory is perfect. Far from it. One of the biggest problems he faces is explaining the existence and structure of the cosmic microwave background, something that many astrophysicists believe to be the the strongest evidence that the Big Bang really did happen. The CMB, they say, is the echo of the Big bang.

How it might arise in Shu’s cosmology isn’t yet clear but I imagine he’s working on it.

Even if he finds a way, there will need to be some uncomfortable rethinking before his ideas can gain traction. His approach may well explain the Type-I supernova observations without abandoning conservation of energy but it asks us to give up the notion of the Big Bang, the constancy of the speed of light and to accept a vast new set of potential phenomenon related

 

Big bang theory Rewrite

Big bang theory rewrite near:

Big bang theory rewrite near

Big bang theory rewrite near

Melbourne researchers believe they may be on the brink of rewriting the history of the universe. A paper being published in a US physics journal suggests it may be possible to view “cracks” in the universe that would support the theory of quantum graphity – considered to be the holy grail of physics. The team of researchers from the University of Melbourne and RMIT say that, instead of thinking of the start of the universe as being a big bang, we should imagine it as a cooling of water into ice. “Think of the early universe as being like a liquid,” Melbourne University theoretical physics researcher James Quach said. “Then as the universe cools, it ‘crystalises’. The reason we use the water analogy is water is without form. “In the beginning there wasn’t even space, space did not exist because there was no form.” Their research rests on a school of thought that has emerged recently to suggest space is made of indivisible building blocks, such as atoms, that can be thought of as similar to pixels that make up images on a computer screen. Quach said the standing model for the origins of the universe, the big bang, needed to be rewritten. He hoped experimentalists would be able to find evidence to support the theory put forward by the Melbourne team of researchers, that would replace it. “The biggest problem with the big bang model is the bang itself,” Quach said. “At the bang, physics breaks down. “The model cannot make any predictions at what occurs at the big bang. You can’t use any of the mathematics [or] any of the theories.” Quach and his fellow researchers theorise that if quantum graphity “cracks” do exist, they will bend or reflect light, which, if observed through a telescope would support their predictions. “If they prove my predictions that’s really good evidence for the condensed matter model of quantum graphity in which case you can throw out all the other attempts.”