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Topic: The Worst Theoretical Prediction in the History of Physics (Read 152 times) previous topic - next topic

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  • socrates1
The Worst Theoretical Prediction in the History of Physics
https://www.realclearscience.com/blog/2017/11/25/the_worst_theoretical_prediction_in_the_history_of_physics.html
The Worst Theoretical Prediction in the History of Physics
Quote
Quantum mechanics has a dark energy problem.
When it comes to scientifically mysterious concepts that begin with the word "dark," dark matter attracts most of the public attention. Dark energy, however, constitutes 68.3% of the mass of the universe compared to dark matter's paltry 26.8% (and normal matter's minuscule 4.9%). It is truly the more consequential of the two "dark" concepts.
Yet we'll never likely be able to "catch" a particle of dark energy as scientists are striving to do with dark matter. That's because dark energy is - most likely - just the energy inherent to space, itself, perhaps arising from Quantum foam, composed of virtual particles that flit in and out of existence. As Einstein reminds us, the energy delivered by these virtual particles briefly protruding into space has mass.
When astronomers attempt to measure dark energy's density in space, they come up with roughly 10^−9 joules per cubic meter, a microscopic but influential amount. However, this observed value, known as the cosmological constant, isn't remotely close to that which is predicted by the time-tested quantum field theory. As detailed in the textbook General Relativity: An Introduction for Physicists:
Quote
"The simplest calculation involves summing the quantum mechanical zero-point energies of all the fields known in Nature. This gives an answer about 120 orders of magnitude higher than the upper limits... set by cosmological observations. This is probably the worst theoretical prediction in the history of physics! Nobody knows how to make sense of this result. Some physics mechanism must exist that makes the cosmological constant very small."
  • Last Edit: November 25, 2017, 09:04:49 AM by socrates1

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #1
Quote
Either that, or quantum physicists' understanding of fields, and by extension, the entire universe, is fundamentally flawed! This seems unlikely, however, as boatloads of observational evidence supports current theories.

An so, quantum physicists are in a bit of a pickle. Making slight tweaks to theoretical estimates narrows the ginormous gap considerably, but our best theories from quantum mechanics still overestimate the influence of dark energy by sixty orders of magnitude.

"Yes, we're clueless," astrophysicist Neil deGrasse Tyson admitted in his recent book Astrophysics for People in a Hurry. "But it's not abject cluelessness. Dark energy is not adrift, with nary a theory to anchor it. Dark energy inhabits one of the safest harbors we can imagine: Einstein's equations of general relativity."

The observed energy density of empty space fits wonderfully within the standard model of Big Bang cosmology, which satisfyingly accounts for the cosmic microwave background, the abundance of basic elements, and the acceleration of the expansion of the universe. At the core of the standard model lies general relativity, one of the most successful theories ever devised. So in the battle of dark energy vs. quantum mechanics, dark energy unquestionably has the upper hand.


  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #2
Note the error in the sentence here:
"That's because dark energy is - most likely - just the energy inherent to space, itself, perhaps arising from Quantum foam, composed of virtual particles that flit in and out of existence."

They do not flit in and out of existence. They simply come into and out of the realm perceptible to our senses. 

Re: The Worst Theoretical Prediction in the History of Physics
Reply #3
TR is not your personal blog Sucky.
Why do I bother?

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #4
TR is not your personal blog Sucky.
Then contribute constructively and make it a discussion. Stop whining.

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #5
Note the error in the sentence here:
"That's because dark energy is - most likely - just the energy inherent to space, itself, perhaps arising from Quantum foam, composed of virtual particles that flit in and out of existence."

They do not flit in and out of existence. They simply come into and out of the realm perceptible to our senses. 
This whole subject is "science" acknowledging the invisible realm while at the same time trying to hold on to a world-view that only contains physical reality. They of course cannot square that circle. Something has to give.

  • VoxRat
  • wtactualf
Re: The Worst Theoretical Prediction in the History of Physics
Reply #6
TR is not your personal blog Sucky.
Then contribute constructively and make it a discussion. Stop whining.
::)  Says the buffoon who routinely quotes himself quoting himself quoting himself while blandly, obtusely ignoring all input from others.

No, there was no "error" in the sentence.
Your "philosophical" quibble with the criteria for "existence" does not constitute fact.
"I understand Donald Trump better than many people because I really am a lot like him." - Dave Hawkins

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #7
Note the error in the sentence here:
"That's because dark energy is - most likely - just the energy inherent to space, itself, perhaps arising from Quantum foam, composed of virtual particles that flit in and out of existence."

They do not flit in and out of existence. They simply come into and out of the realm perceptible to our senses. 
This whole subject is "science" acknowledging the invisible realm while at the same time trying to hold on to a world-view that only contains physical reality. They of course cannot square that circle. Something has to give.
And here is the one that gives:
Quote
"So in the battle of dark energy vs. quantum mechanics, dark energy unquestionably has the upper hand."

The invisible (non-physical) world "has the upper hand".
  • Last Edit: November 25, 2017, 10:03:28 AM by socrates1

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #8
Quote
upper hand

noun
1.
the dominating or controlling position; advantage:
to have the upper hand in the fight.

In what sense could the invisible realm "have the upper hand"?

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #9
Not much interest in this it seems.
Will move on shortly.

  • Faid
Re: The Worst Theoretical Prediction in the History of Physics
Reply #10
:wave:
Who even made the rule that we cannot group ducks and fish together for the simple reason that they are both aquatic? If I want to group them that way and it serves my purpose then I can jolly well do it however I want to and it is still a nested hierarchy and you can't tell me that it's not.

Re: The Worst Theoretical Prediction in the History of Physics
Reply #11
Note the error in the sentence here:
"That's because dark energy is - most likely - just the energy inherent to space, itself, perhaps arising from Quantum foam, composed of virtual particles that flit in and out of existence."

They do not flit in and out of existence. They simply come into and out of the realm perceptible to our senses. 
This whole subject is "science" acknowledging the invisible realm while at the same time trying to hold on to a world-view that only contains physical reality. They of course cannot square that circle. Something has to give.
And here is the one that gives:
Quote
"So in the battle of dark energy vs. quantum mechanics, dark energy unquestionably has the upper hand."

The invisible (non-physical) world "has the upper hand".
Dark energy is not "non-physical". It is part of physics.

Re: The Worst Theoretical Prediction in the History of Physics
Reply #12
Quote
upper hand

noun
1.
the dominating or controlling position; advantage:
to have the upper hand in the fight.

In what sense could the invisible realm "have the upper hand"?
Merely naming it apparently has power over weak minds.

Re: The Worst Theoretical Prediction in the History of Physics
Reply #13
Quote
upper hand

noun
1.
the dominating or controlling position; advantage:
to have the upper hand in the fight.

In what sense could the invisible realm "have the upper hand"?

In a rhetorical sense.

Re: The Worst Theoretical Prediction in the History of Physics
Reply #14
TR is not your personal blog Sucky.
Then contribute constructively and make it a discussion. Stop whining.
To help people do that you could give them some reason to think you might understand any of it. You are not doing that.
Don't give people so many easy excuses to dismiss your ideas as woo.
If you want to be heard, learn the language of your audience, and avoid the words and phrases your audience associates with crackpottery and nonsense.

  • socrates1
Re: The Worst Theoretical Prediction in the History of Physics
Reply #15
Time to move on.

  • VoxRat
  • wtactualf
Re: The Worst Theoretical Prediction in the History of Physics
Reply #16
"I understand Donald Trump better than many people because I really am a lot like him." - Dave Hawkins