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Re:Musings on the Current Status of High Energy Physics by BrandoElFollito on Sunday January 05, 2020 @04:00PM (#21964056)
I have a PhD in physics, and left academia for industry (20 years ago).

One of the reasons was that physics today (or at least at that time) was dealing with exotic stuff, away from everyday life. It was not the time of Planck or Curie where within 30 years physics was boiling hot, with key discoveries almost everyday. Just look at the picture from the Solvay confrence where you see names of people you read about in a high school book.

I would hope we are in a stage like in the late XIX century, where everything seemed to be known in physics, with some tiny things still needing an explanation : the Michelson Morley experiment, the uv catastrophe etc.

Re:Musings on the Current Status of High Energy Physics by abdullahkhalids on Monday January 06, 2020 @02:03AM (#21967160)
The reason physics research of today deals with exotic stuff is that pretty much all of physical phenomena observable with the human eye or simple instruments has been explained. There is a lot not explained, crucial problems that indicate that the very basis of physics have to be revised in multiple ways, but that is all in the exotic domain.

That said, there is progress happening in physics, not just in certain fields. Quantum information is probably where most the the novel and insightful fundamental work is being done, and spillovers from it are affecting other parts of physics, including cosmology and condensed matter physics. As for experimental progress, there was recently a "quantum gravity in the lab" conference held at Google X [1], because we are very near the point where we can do experiments that involve both quantum and gravitational phenomena. This line of attack is hopefully going to falsify at least some perspectives on new physics and hopefully lead to some new physics. We will see.

[1] https://sites.google.com/view/quantumgravityinthelab/home

Re:Musings on the Current Status of High Energy Physics by fsh on Monday January 06, 2020 @03:20AM (#21967496)
Most of the field where progress is made don't even try to look for "new physics". The foundation for quantum information theory is just classical quantum mechanics.
Re:Musings on the Current Status of High Energy Physics by bjornsing on Sunday January 05, 2020 @04:31PM (#21964265)
I got out with just an MSc, for pretty much the same reason. You know physics has lost a lot of steam[1] when the perhaps leading theoretical physicist of our time, Leonard Susskind, regularly gives talks about... how he knew Richard Feynman.

Regarding your hope: I very much doubt we’ll get to experience the following stage in our lifetime.

1. It’s amazing to think just how much steam: just as an example, you could argue that physicists determined the outcome of WWII, and with it the whole path of civilization.

Re:Musings on the Current Status of High Energy Physics by redis_mlc on Sunday January 05, 2020 @06:50PM (#21965157)
> you could argue that physicists determined the outcome of WWII

If you're referring to the A-bomb, no. Germany was defeated without it, and the Japanese military didn't really care if civilians were turned to ashes.

You could argue that a combination of events ended the Pacific War, including starvation, no fuel, Russians advancing in the north, the destruction of the Japanese navy by the USA, the destruction of the Japanese army in Manchuria/Russian border, plus the A-bomb.

The Japanese Emperor was a world-class marine biologist and understood the A-bomb in general terms, but had very little influence over the military. He did a radio broadcast and survived retaliation from the military, so he does get credit for that.

Hitler and the Japanese military were die-hard end-of-the-world types. Important to realize when dealing with other tyrants. For them, there is no Plan B or surrender.

Re:Musings on the Current Status of High Energy Physics by credit_guy on Monday January 06, 2020 @07:58AM (#21968758)
> > you could argue that physicists determined the outcome of WWII If you're referring to the A-bomb, no. Germany was defeated without it, and the Japanese military didn't really care if civilians were turned to ashes.

Germany was defeated, but the USSR was on a roll.

Without the A-bomb, there’s a decent chance the Soviet Union would’ve pushed the Anglo-Americans out of the continental Europe.

Re:Musings on the Current Status of High Energy Physics by Koshkin on Monday January 06, 2020 @03:58PM (#21973227)
That would have been WWIII.
Re:Musings on the Current Status of High Energy Physics by java-man on Monday January 06, 2020 @09:40AM (#21969410)
and took over Japan.
Re:Musings on the Current Status of High Energy Physics by ianai on Sunday January 05, 2020 @05:02PM (#21964471)
QTT seems like a path forward from “the breach” of current understanding.
Re:Musings on the Current Status of High Energy Physics by SkyMarshal on Sunday January 05, 2020 @06:38PM (#21965084)
>I would hope we are in a stage like in the late XIX century, where everything seemed to be known in physics, with some tiny things still needing an explanation

I don't see how that's possible given current uncertainties. We still haven't figured out how to relate quantum mechanics and relativity, haven't fully uncovered the deep structure of matter, and are still debating over strings vs membranes and whatnot. It seems more likely we're still missing something something foundational.

Re:Musings on the Current Status of High Energy Physics by lordgrenville on Monday January 06, 2020 @10:26AM (#21969779)
I'm almost certain parent meant the opposite: it looks as if everything is almost in place, but the UV catastrophe/Michelson-Morley eventually showed that physics had giant holes in and led to massive theoretical breakthroughs.

Amusingly, Michelson said in the 1890s "The more important fundamental laws and facts of physical science have all been discovered, and these are now so firmly established that the possibility of their ever being supplanted in consequence of new discoveries is exceedingly remote...our future discoveries must be looked for in the sixth place of decimals."

Re:Musings on the Current Status of High Energy Physics by SkyMarshal on Monday January 06, 2020 @03:23PM (#21972865)
Yeah that Michelson quote is what I had in mind too. It feels like that kind of situation is still possible even today.
Re:Musings on the Current Status of High Energy Physics by Koshkin on Monday January 06, 2020 @04:04PM (#21973298)
Yes, we definitely want to arrive to a universally accepted unification of gravity with quantum field theory. The M-theory, as sophisticated and promising as it is, does not cut it for some reason. That should tell us something.
Re:Musings on the Current Status of High Energy Physics by BrandoElFollito on Saturday January 11, 2020 @11:44AM (#22020791)
Yes thanks, this is what I meant, sorry for the lack of clarity
Re:Musings on the Current Status of High Energy Physics by Iwan-Zotow on Sunday January 05, 2020 @10:36PM (#21966218)
> We still haven't figured out how to relate quantum mechanics and relativity

Huh? Paul Dirac did it quite some time ago.

> haven't fully uncovered the deep structure of matter

VERY deep, highly irrelevant to our lives.

Re:Musings on the Current Status of High Energy Physics by DavidSJ on Monday January 06, 2020 @12:18AM (#21966667)
Huh? Paul Dirac did it quite some time ago.

I guess he meant general, not special, relativity.

Re:Musings on the Current Status of High Energy Physics by SkyMarshal on Monday January 06, 2020 @02:32PM (#21972291)
>Huh? Paul Dirac did it quite some time ago.

General, not special.

>VERY deep, highly irrelevant to our lives.

1. What a foolish comment. The ability to understand, and one day control, the strong force of matter, is extremely relevant to our lives. Indestructible building materials, space elevators, economic boom from harvesting the asteroid belt, etc. Use your imagination.

2. For the purposes of this comment thread, it's irrelevant whether it's relevant to our lives our not. The assertion was physics is still far from figuring everything out. Nothing to do with our everyday lives.

Re:Musings on the Current Status of High Energy Physics by pfdietz on Monday January 06, 2020 @06:48PM (#21974924)
We understand the strong force well enough to dismiss such possibilities. It has a range of about 1 femtometer. You're not going to be building anything using that except nuclei, and that's not going to give anything like that.

I wonder sometimes if this suspension of critical thinking about what physics will be able to give us is due to science fiction. SF from the beginning has been promising far more than science could ever deliver. We're now at the point in history all those fantasies have to be put down.

Re:Musings on the Current Status of High Energy Physics by SkyMarshal on Monday January 06, 2020 @09:56PM (#21976350)
It took roughly a century from the discovery of quantum mechanics to when we started using aspects of it in real-world technology, even during a relatively primitive period of human history where we were also still figuring out mere electricity.

But I bet during the time quantum theory was first being developed it was hard to see how or whether it might be used in actual technology. I'm sure some even dismissed such possibilities. But here we are now using it to inform radio telecommunications tech, and experimenting with quantum entanglement communications and quantum computers.

A hundred of years of having the correct theoretical foundations + hacking and tinkering on them may make possible things that seem exotic or impossible now.

Re:Musings on the Current Status of High Energy Physics by pfdietz on Monday January 06, 2020 @10:34PM (#21976572)
What? Quantum mechanics was used almost immediately to understand chemical bonds and to understand the nature of semiconductors. The frickin LASER is a quantum mechanical device! I could go on and on. The notion that QM wasn't used for roughly a century is totally false.
Re:Musings on the Current Status of High Energy Physics by SkyMarshal on Tuesday January 07, 2020 @06:07PM (#21986229)
The laser was invented in 1960, 55yrs after Einstein published his Nobel-winning paper on the photoelectric effect. So great, in some cases it takes even less time to get from correct fundamental theory to useful technology.

The is point is - finding the correct theory sets off a process of hacking and tinkering that results in useful new technologies at some future time, some of which may not have been foreseeable at the time the theory was discovered. But we have to invest in finding the correct theory, anticipating eventually useful things will come of it, some we can foresee and some we can't.

Re:Musings on the Current Status of High Energy Physics by pfdietz on Sunday January 05, 2020 @08:18PM (#21965626)
It's possible we've gotten everything practically useful out of fundamental physics that we're going to get. At this point, phenomena not explained by the standard model occur at such extreme conditions that it's difficult to see how they could ever be technologically relevant.