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ARSEN

Member Since 27 Nov 2008
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#3258331 Tattoo Removal in CLT

Posted by ARSEN on Yesterday, 12:21 AM

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#3258317 Because Science... that's why...

Posted by ARSEN on 28 February 2015 - 11:38 PM

 

If a new theory turns out to be true, the universe may not have started with a bang.

 

In the new formulation, the universe was never a singularity, or an infinitely small and infinitely dense point of matter. In fact, the universe may have no beginning at all.

"Our theory suggests that the age of the universe could be infinite," said study co-author Saurya Das, a theoretical physicist at the University of Lethbridge in Alberta, Canada.

The new concept could also explain what dark matter — the mysterious, invisible substance that makes up most of the matter in the universe — is actually made of, Das added. [The Big Bang to Civilization: 10 Amazing Origin Events]

Big Bang under fire

According to the Big Bang theory, the universe was born about 13.8 billion years ago. All the matter that exists today was once squished into an infinitely dense, infinitely tiny, ultra-hot point called a singularity. This tiny fireball then exploded and gave rise to the early universe.

The singularity comes out of the math of Einstein's theory of general relativity, which describes how mass warps space-time, and another equation (called Raychaudhuri's equation) that predicts whether the trajectory of something will converge or diverge over time. Going backward in time, according to these equations, all matter in the universe was once in a single point — the Big Bang singularity.

But that's not quite true. In Einstein's formulation, the laws of physics actually break before the singularity is reached. But scientists extrapolate backward as if the physics equations still hold, said Robert Brandenberger, a theoretical cosmologist at McGill University in Montreal, who was not involved in the study.

"So when we say that the universe begins with a big bang, we really have no right to say that," Brandenberger told Live Science.

There are other problems brewing in physics — namely, that the two most dominant theories, quantum mechanics and general relativity, can't be reconciled.

Quantum mechanics says that the behavior of tiny subatomic particles is fundamentally uncertain. This is at odds with Einstein's general relativity, which is deterministic, meaning that once all the natural laws are known, the future is completely predetermined by the past, Das said.

And neither theory explains what dark matter, an invisible form of matter that exerts a gravitational pull on ordinary matter but cannot be detected by most telescopes, is made of.

Quantum correction

Das and his colleagues wanted a way to resolve at least some of these problems. To do so, they looked at an older way of visualizing quantum mechanics, called Bohmian mechanics. In it, a hidden variable governs the bizarre behavior of subatomic particles. Unlike other formulations of quantum mechanics, it provides a way to calculate the trajectory of a particle.

Using this old-fashioned form of quantum theory, the researchers calculated a small correction term that could be included in Einstein's theory of general relativity. Then, they figured out what would happen in deep time. [8 Ways You Can See Einstein's Theory of Relativity in Real Life]

The upshot? In the new formulation, there is no singularity, and the universe is infinitely old.

A way to test the theory

One way of interpreting the quantum correction term in their equation is that it is related to the density of dark matter, Das said.

If so, the universe could be filled with a superfluid made of hypothetical particles, such as the gravity-carrying particles known as gravitons, or ultra-cold, ghostlike particles known as axions, Das said.

One way to test the theory is to look at how dark matter is distributed in the universe and see if it matches the properties of the proposed superfluid, Das said.

"If our results match with those, even approximately, that's great," Das told Live Science.

However, the new equations are just one way to reconcile quantum mechanics and general relativity. For instance, a part of string theory known as string gas cosmology predicts that the universe once had a long-lasting static phase, while other theories predict there was once a cosmic "bounce," where the universe first contracted until it reached a very small size, then began expanding, Brandenberg said.

Either way, the universe was once very, very small and hot.

"The fact that there's a hot fireball at very early times: that is confirmed," Brandenberg told Live Science. "When you try to go back all the way to the singularity, that's when the problems arise."

The new theory was explained in a paper published Feb. 4 in the journal Physical Letters B, and another paper that is currently under peer review, which was published in the preprint journalarXiv.

 

http://news.yahoo.co...-140017504.html




#3257350 Help Mr. Igo

Posted by ARSEN on 27 February 2015 - 09:53 PM

If he gets anymore money, he'll be public enemy #1 in the tinderbox.


Sooo Jeremy will be the 1%?

Btw, I got Nikon D7000 and it's absolutely amazing camera. I never knew I can customize camera that much.


#3256906 Why Multinational Companies get massive tax breaks

Posted by ARSEN on 27 February 2015 - 04:33 PM

I think many of us try to be knowledgeable about these types of things. I guess I just don't agree with taking one guy's opinion on all things corporate because he claims he works for a fortune 500 company on a message board.

That isn't meant to be offensive. I don't take everything Paul Krugman or Milton Friedman says about the economy as for certain, even though they have impeccable credentials as economists.

Similar as to how you so easily dismissed Warren Buffet's opinion by implying he was senile because of his age.

The funniest thing is, I didn't even disagree with you on the overall premise of your OP.

My only disagreement was basic business 101 level stuff, and you still shot it down as "you dont understand".

You are so eager to play up your bonafides as unimpeachable I am not sure you even fully read my original reply, and if you did then I would go to USC and demand a refund.

I don't know a whole lot about risk assessment in major companies, but I do know that many have many diverse analysts and committees to discuss the issue because there is so much differing opinion. That is why I find it ironic that you feel you should be able to speak on these things authoritatively and unopposed. The very nature of your profession requires skepticism and debate.

But I appreciate what you bring to the board and your insights. But that doesn't mean that I can't have a differing and educated opinion on what you are saying.


I respect that. I was just telling you 2 year of research that was put in it. In shorten, US will continue to give tax breaks to huge corporations and it's unlikely to change any time soon.


#3255658 Jon Stewart tells you what is wrong with all the conservative nut jobs here a...

Posted by ARSEN on 26 February 2015 - 05:39 PM

Progressives: You're not a Democrat, so you must be a Republican.

Independents: Really? What's the difference between the D and R these days?


I know the difference and I prefer certain things from both parties. I believe both parties have the good, the bad and the ugly. It's either far left or far right... I prefer to be in the middle.


#3255425 Jon Stewart tells you what is wrong with all the conservative nut jobs here a...

Posted by ARSEN on 26 February 2015 - 02:45 PM

I think there is something wrong with both conservatives and liberals. It's great to be independent!


#3255345 Why do white people complain and argue so much?

Posted by ARSEN on 26 February 2015 - 01:56 PM

Same reason black people, Hispanic people, Asian people, etc. complain and argue all the time. It is because they are people and it is what most people do.


I have one of the most diverse families, I can confirm that everyone bitches and whines...


#3254335 2014/15 UEFA Champions League

Posted by ARSEN on 25 February 2015 - 04:41 PM

Arsenal has looked awful


Yea, many call for Wenger to be canned. If Arsenal misses top 4 finish, Wenger is a gonner. He has an amazing squad that he totally mismanages from basic formations to game plan.


#3253839 Huddle Mod Open Voting

Posted by ARSEN on 25 February 2015 - 10:10 AM

I think all of you guys should get it, personally.


It's possible considering most of us spend majority of our time on different parts of the forum. This would guaranteed better mod presence throughout the forum.


#3253800 Huddle Mod Open Voting

Posted by ARSEN on 25 February 2015 - 09:23 AM

I'd like to take this moment and thank people who voted for me. I truly appreciate your support. It really means a lot to me.

Thank you guys.


#3253370 Post a pic, any pic.

Posted by ARSEN on 24 February 2015 - 07:36 PM

Yes, that's who you think it is...

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Photographs that shatter your image of famous people


Putin?


#3253366 Huddle Mod Open Voting

Posted by ARSEN on 24 February 2015 - 07:29 PM

This beatdown is near embarrassing...


blah blah concession speech blah blah


I just voted for you :)


#3252033 Huddle Mod Open Voting

Posted by ARSEN on 23 February 2015 - 11:03 PM

Short but thick.

I call it the two inch tower of terror.

 




#3251993 Huddle Mod Open Voting

Posted by ARSEN on 23 February 2015 - 10:36 PM

Girth is good to an extent. I'm like a hockey puck.


Black, round and small?


#3250569 Wow even WalMart is more in touch with reality than the RNC

Posted by ARSEN on 23 February 2015 - 11:35 AM

This thread needs tits