WSU Master Class: Inflationary Cosmology with Alan Guth

Breakthrough Prize winner Alan Guth developed the theory of inflation to answer to our cosmic origins. It's one of the most studied and debated theories in cosmology, with research propelling Guth’s work to the forefront of scientific conversation.
In this Master Class, Professor Guth addresses what experiments could potentially rule out the BICEP2 results. Since recording this in 2017, the Planck spacecraft collected the data that Professor Guth anticipated, which shows that the initial observations were likely an artifact of interstellar dust, not primordial gravitational waves.
This lecture was recorded on xyz at the World Science Festival in New York City.
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[@Psnym]

One of this planet’s friendliest geniuses

[@rebellion54678]

this professor is my favorite scientist ! such a brilliant mind !

[@whirledpeas3477]

Yes 👍 Why is he your favorite ?

[@sku32956]

Really enjoy this keep them coming !!!!!

[@DavidVonR]

Fascinating thanks!!

[@AlejandroFernandezDaCosta]

Fantastic theory and lecture, thank you👏👏👏

[@peterpalumbo1963]

If susy exist at what point would they have formed? After recombination would regular particles form?

[@kevinhanley3023]

Where do the photons come from before recombination?

[@snowpants2212]

Right from the beginning he overturns most of what I've heard about inflation and the big bang.

[@SudheendraRao26]

With my limited understanding, I am thinking BICEP2 and NANOGrav results are something to pay close attention to in coming days, to get a better picture in the inflation vs Big-Bounce debate.

[@isonlynameleft]

That was awesome!

[@andy8073]

Is 10 to the minus 38 seconds one planck time?

[@tomasasompolinsky1143]

If I aquire kinetic energy from falling into a large mass that energy came from somewhere. It balances out the energy increase in negative energy.

[@Teej666]

Why did that girl have to stand at the door the whole time??

[@kagannasuhbeyoglu]

👏 👏 👏

[@christopherwall444]

Immediately

[@pg3219]

Cosomology? Is that the study of the Cososm?

[@davidwilkie9551]

If all theory is a Sciencing Test design of real-time Actuality, then the Student's first principles learning objectives are to collect and collate the work of Peers in professional expertise, and .."just look at it".. from experience in a combined POV, the natural "Apprenticeship" approach from recognised re-evolution techniques. "In Theory", self-defining AM-FM reciprocation-recirculation Logarithmic Actuality, is this Observable Eternity-now wave-packaging Singularity projection-drawing holography, Spacetime Relativity Interval and WYSIWYG QM-TIME functional e-Pi-i condensation-concept Conception, resonance bonding sense-in-common, Completeness. Professor Guth has illuminated the e-Inflation aspect, Dr Disney the Logarithmic Time Duration in Pi-bifurcation location aspects and together with Dirac's reciprocals of large number features, fits Euler's e-Pi-i 1-0-infinity instantaneous Perspective probability sync-duration Form-ation.., set in time-timing Cosmology. (If you look, listen, hear and see what that means under the circumstances, Logarithmic Time made of making Fluxion-Integral Calculus)

[@embedder6344]

"Within ABOUT ten to the minus thirty five seconds OR SO".......... how inexact is that haha, I mean I don't want to be kept unnecessarily waiting for the big bang to end

[@rogerbuckthal5053]

Uh... I like it

[@donaldodom9062]

Great Sci-Fi story. The Flying Ball Circus rides again. :)

[@whirledpeas3477]

Amazing Neanderthal comment. Don't forget to shave your unibrow

[@edwardwood3622]

Let me guess, the universe was created 6500 years ago by god?

[@AzimuthAviation]

It's only a matter of time that Guth finds something to fill that empty cube...

[@cobloaf1]

Shot every uhh..

[@executivesteps]

You would think at some point in his life someone would have told him he had a dreadful verbal tic “uh”. I quit after 4 minutes. I couldn’t take it anymore.

[@calenbolo]

A brilliant mind, often these individuals have tremendous social quirks or quarks ;)

[@nurlatifahmohdnor8939]

Page 568 Hopi is a language. NE Arizona hoplite n (in ancient Greece) a heavily armed infantryman. [C18: from Gk hoplites, from hoplon weapon, from hepein to prepare]

[@nmanon4960]

He talks about the uniformity being confirmed by photons on their journey on a straight line because the universe (at that time) after 380k years switched from opaque to transparent. Does he mean to imply that the photons accidentally ran into the electrons when the universe was opaque because they couldn’t see? I don’t see how it matters if it were opaque vs transparent. Especially when nothing cared (at the time) about seeing the photons. I’m left w the impression that these photons were smart enough to avoid electrons in a transparent universe.

[@tomasasompolinsky1143]

I'm glad that you came to this lecture. It raises many questions that are hard to understand. You know, of course, that photons in the interior of our sun takes about 4,000 years to emerge from the surface. It's like that.

[@RicardoMarlowFlamenco]

It’s maybe helpful analogy by Feynman and his little kid who couldn’t think of the word he needed cuz the word bag in his stomach was empty. Photons are like words that exit your mouth… they are not trapped in your body somewhere … they are created by the field… so that excitation did not occur before that 380k mark of time due to temperature

[@dmitryshusterman9494]

At some point in time, electrically neutral atoms were able to form, and that's why space became transparent to light. Before that, electrically charged particles scattered photons by constantly absorbing and reabsorbing them

[@dmitryshusterman9494]

@@RicardoMarlowFlamenco that does not make sense to me. Photons had to exist since there were electrical charges everywhere, and photons mediate em force and are product of electric field. photons were scattered by those electric charges before, and released to travel in straight lines at 380 years mark, when protons and neutrons neutralized by forming atoms. That's why em force is not dominant since then, and space is transparent to light

[@nmanon4960]

@@dmitryshusterman9494 if this is about how differently charged particles attract and repel each other, ok I understand that. But I still don’t understand what difference it would make to a photon whether space was/is opaque or transparent. It matters to us - in terms of observation - but why does it matter to a photon?

[@KaliFissure]

James Peebles doesn’t believe inflationary model. Why do you?

[@jacklcooper3216]

0=1 1=3............. at times ,,,,,your math is lineal

[@ryanrussell8262]

I could never attend a class at MIT with Prof Guth, he lost me in like 1 minute.

[@wulphstein]

It is ironic that the youtube image of this video displays a picture of a water ripple. I have been trying to convince the physics community that the building blocks of spacetime should be something similar to ripples. But so far... no comments.

[@janicebeams2389]

Alan, let me help you with the words, "I . . . made . . . a . . . mistake." See how simple that is? There's no need to make up fictional metaphysics, is there?

[@jamescollier3]

Every bit of intelligence exists between you and him