# How did string theory get so far without any principles or equations?

1. Top Mathematician
waut
[...]

Nope, the string path integral is not about free strings only. It allows to compute all string amplitudes in perturbatuon theory. This, by the way, one of simple predicrions of string theory, together wirh very peculiar spectrum of states (too bad both can be distinguished from the corresponding effective QFT at too high energies to actualy verify the predictions).

The QFT counterpart of that is the worldline formalism, not

Both, of coursez fail in highly non-perturbative regimes. But making the theory work non-perturbatively is part of making sense of it.

So basically string theory has no principles, postulates, predictions, nor equations.

That's not what that post said.

2 weekswaut
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2. Top Mathematician
argc

Erin Weinstein discussed this in his podcast with Rogan. Basically, a major part of it was that Witten was such an intellectual giant.

2 weeksargc
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3. Top Mathematician
dgan

Erin Weinstein discussed this in his podcast with Rogan. Basically, a major part of it was that Witten was such an intellectual giant.

So on a technical level, string theory replaces physical principles, postulates, predictions, and equations with Witten.

2 weeksdgan
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4. Top Mathematician
rteb

The deformed Hermitian Yang--Mills equation is an equation from string theory

2 weeksrteb
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5. Top Mathematician
argc

Erin Weinstein discussed this in his podcast with Rogan. Basically, a major part of it was that Witten was such an intellectual giant.

So on a technical level, string theory replaces physical principles, postulates, predictions, and equations with Witten.

2 weeksargc
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6. Top Mathematician
farg
[...]

So basically string theory has no principles, postulates, predictions, nor equations.

That's not what that post said.

So you can not answer very simple questions to make your interest more specific?

2 weeksfarg
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7. Top Mathematician
farg

Erin Weinstein discussed this in his podcast with Rogan. Basically, a major part of it was that Witten was such an intellectual giant.

What Witten is doing is astonishing. But it is not the major part of the modern string theory. If you are taking information from blogs and podcasts you will always learn about the most marginal directions, because mainstream is boring for non-specialists. Also, if you base your opinions on talks you may hear in mathematical seminars, you are highly biased, because they mostly cover the boundary between physics and math. The bulk physical string theory is very different, and not all people there know anything about AG, for example.

2 weeksfarg
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8. Top Mathematician
abye

String theory has led to lots of beautiful and deep mathematics and essentially nothing of interest in physics. It's hard to see how either claim is debatable.

2 weeksabye
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9. Top Mathematician
pumb

Erin Weinstein discussed this in his podcast with Rogan. Basically, a major part of it was that Witten was such an intellectual giant.

Weinstein is a complete crank. Regardless of the previous fact, this particular statement is a gross overexaguration. But this is funny and that's exactly what I come to MJR for, so get my upvote dude.

2 weekspumb
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10. Top Mathematician
xasm

String theory has led to lots of beautiful and deep mathematics and essentially nothing of interest in physics. It's hard to see how either claim is debatable.

What is your level in physics to make such a stronh claim?

2 weeksxasm
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11. Top Mathematician
nkhh

I thought this was a mathemtics board? Alex, why are you stinking it up with physics? Why can't you just let it go that Woit called you crank? He was right you know.

2 weeksnkhh
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12. Top Mathematician
mgvw

I thought this was a mathemtics board? Alex, why are you stinking it up with physics? Why can't you just let it go that Woit called you crank? He was right you know.

Why did Woit call Unzicker a crank? Where?

2 weeksmgvw
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13. Top Mathematician
nyem

I thought this was a mathemtics board? Alex, why are you stinking it up with physics? Why can't you just let it go that Woit called you crank? He was right you know.

Why did Woit call Unzicker a crank? Where?

A garden-variety crank, to be specific.

https:// www. math.columbia. edu/~woit/wordpress/?p=6156

2 weeksnyem
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14. Top Mathematician
mgvw
[...]

Why did Woit call Unzicker a crank? Where?

A garden-variety crank, to be specific.

https:// www. math.columbia. edu/~woit/wordpress/?p=6156

Well that seems rather nasty. How was it warranted? Does Woit call Michio Kaku and Sean Carroll and Brian Greene cranks?

2 weeksmgvw
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15. Top Mathematician
nyem

I think it was warranted because he was writing crank stuff. It seems his knowledge of basic physics is poor.

2 weeksnyem
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16. Top Mathematician
mgvw

I think it was warranted because he was writing crank stuff. It seems his knowledge of basic physics is poor.

Are strings basic physics now?

2 weeksmgvw
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17. Top Mathematician
nyem

He denies black holes exist! It seems his command of the subject is poor.

2 weeksnyem
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18. Top Mathematician
mgvw

He denies black holes exist! It seems his command of the subject is poor.

Has a black hole been observed? What’s its name?

2 weeksmgvw
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19. Top Mathematician
mgvw

He denies black holes exist! It seems his command of the subject is poor.

Has a black hole been observed? What’s its name?

Just like string theory has no physical principles, postulates, predictions, nor equations, the black holes they observe have no names.

2 weeksmgvw
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20. Top Mathematician
paup
[...]

Has a black hole been observed? What’s its name?

Just like string theory has no physical principles, postulates, predictions, nor equations, the black holes they observe have no names.

Yes please share the names of some of the observed black holes. Which is the biggest? Which was first?

2 weekspaup
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