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Bizarre 'Dark Fluid' With Negative Mass Could Dominate the Universe (theconversation.com)
One of the most galling mysteries in physics is that of the dark matter and dark energy. Scientists believe that together, these could account for up to 95 percent of the total mass in the universe. Now, a researcher at the University of Oxford says a new theory could explain all that "dark phenomena." From a report: The two mysterious dark substances can only be inferred from gravitational effects. Dark matter may be an invisible material, but it exerts a gravitational force on surrounding matter that we can measure. Dark energy is a repulsive force that makes the universe expand at an accelerating rate. The two have always been treated as separate phenomena. But my new study, published in Astronomy and Astrophysics, suggests they may both be part of the same strange concept -- a single, unified "dark fluid" of negative masses.
Negative masses are a hypothetical form of matter that would have a type of negative gravity -- repelling all other material around them. Unlike familiar positive mass matter, if a negative mass was pushed, it would accelerate towards you rather than away from you. Negative masses are not a new idea in cosmology. Just like normal matter, negative mass particles would become more spread out as the universe expands -- meaning that their repulsive force would become weaker over time. However, studies have shown that the force driving the accelerating expansion of the universe is relentlessly constant. This inconsistency has previously led researchers to abandon this idea. If a dark fluid exists, it should not thin out over time.
In the new study, I propose a modification to Einstein's theory of general relativity to allow negative masses to not only exist, but to be created continuously. "Matter creation" was already included in an early alternative theory to the Big Bang, known as the Steady State model. The main assumption was that (positive mass) matter was continuously created to replenish material as the universe expands. We now know from observational evidence that this is incorrect. However, that doesn't mean that negative mass matter can't be continuously created. I show that this assumed dark fluid is never spread too thinly. Instead it behaves exactly like dark energy.
Negative masses are a hypothetical form of matter that would have a type of negative gravity -- repelling all other material around them. Unlike familiar positive mass matter, if a negative mass was pushed, it would accelerate towards you rather than away from you. Negative masses are not a new idea in cosmology. Just like normal matter, negative mass particles would become more spread out as the universe expands -- meaning that their repulsive force would become weaker over time. However, studies have shown that the force driving the accelerating expansion of the universe is relentlessly constant. This inconsistency has previously led researchers to abandon this idea. If a dark fluid exists, it should not thin out over time.
In the new study, I propose a modification to Einstein's theory of general relativity to allow negative masses to not only exist, but to be created continuously. "Matter creation" was already included in an early alternative theory to the Big Bang, known as the Steady State model. The main assumption was that (positive mass) matter was continuously created to replenish material as the universe expands. We now know from observational evidence that this is incorrect. However, that doesn't mean that negative mass matter can't be continuously created. I show that this assumed dark fluid is never spread too thinly. Instead it behaves exactly like dark energy.
I had the lamb vindaloo for lunch.
I want my negasphere!
Is it just me or has the physics community been grasping at straws lately?
Anonymous troll posts have existed on Slashdot for as long as I've been reading, but the sheer volume of them started climbing dramatically a few years ago.
Back in the day, I used to read with my threshold at 0 because you would see a fair number of thoughtful comments which were anonymously posted for whatever reason - I was willing to tolerate the crap posts in order to see the good ones. But the sheer number of garbage posts we see nowadays drove me to change my mind - nowadays my "one line comment threshold is set to 1. I know I'm missing some things which probably deserve consideration, but I am unwilling to slog through the cesspool.
#DeleteChrome
because math allows it. But not everything is real what math allows. Just look at the epic failure of SUSY or read "Lost in Math: How Beauty Leads Physics Astray" from theoretical physicist Sabine Hossenfelder.
"However, studies have shown that the force driving the accelerating expansion of the universe is relentlessly constant."
And there are several studies which claim that the accelerating expansion of the Universe is an illusion. I think it would be simpler(?) to explain the galactic rotation problem and/or the Bullet Cluster without dark matter with a model. And if that model also says something about the expansion of the Universe which matches the observations that would be an extra. But no model should be built upon solely on the accelerating expansion of the Universe.
"It therefore appears that a simple minus sign may solve one of the longest standing problems in physics."
I have read a study which claimed that the bending of light around a galaxy was consistent with the velocity of the stars around the galaxy. That means space-time is really curved with the right amount since there cannot be any repulsive force which bends light.
A precise extragalactic test of General Relativity
http://science.sciencemag.org/...
Government cannot make man richer, but it can make him poorer. - Ludwig von Mises
There is a Mexican mathematician by the name of Miguel Alcubierre who came out with description of a theoretical method of propelling a solid object in space at extremely high speeds.
https://en.wikipedia.org/wiki/...
His theory pencils out as internally consistent, but when you start to match it up the the observable universe, you get into things that we didn't think actually existed - like a requirement for a material with negative mass.
Fellow Slashdotters, I need a few hundred liters of this stuff for my DIY Alcubierre drive. Anybody got any advice on how I can collect a material that starts to run away faster and faster as I get closer and closer to it?
TIA!
There is also the question of how a negative mass fluid would react with other n/mass fluid particles around it. If positive masses attract each other, and a positive-negative mass interaction results in repulsion, how would two negative-mass particles interact with each other?
If you did the math or read the original paper, you'd know that positive masses attract, positive-negative masses accelerate in the same direction, and negative masses repulse.
Anybody got any advice on how I can collect a material that starts to run away faster and faster as I get closer and closer to it?
TIA!
It's called a woman