Physics@FOM 2015 - Masterclass Alan Guth

Prior to Physics@FOM 2015, the programme committee organised four masterclasses. These classes offer PhDs and young postdocs a unique opportunity to receive an introduction to their discipline from top researchers.
About the conference:
Physics@FOM Veldhoven is a large congress that provides a topical overview of physics in the Netherlands. It is organised by the Foundation for Fundamental Research on Matter (FOM) and takes place each year in January. Traditionally, young researchers are given the chance to present themselves and their work alongside renowned names from the Dutch and international physics community. The programme covers Light and matter, Atomic, molecular and optical physics, Nanoscience and nanotechnology, Statistical physics and Soft condensed matter, Surfaces and interfaces, Physics of fluids, Subatomic physics, Plasma and fusion physics, and Strongly correlated systems.
www.fom.nl/veldhoven

[@richross4781]

The guy is just so easy to listen to. He never makes it any more complicated than it has to be. Awesome teaching ability.

[@rodovre]

Brilliant and clear presentation of this complex subject. Guth is a real master.

[@continentalgin]

A wonderful lecture. I'm not a physicist or mathematician, but Dr. Guth made his talk so understandable, I could grasp the concepts. He's a top scientist, but also a great professor with superb educator skills. He's just great and his inflationary model is enthralling. Just imagining what he's talking about is mind blowing, but it makes perfect sense.

[@sherlockholmeslives.1605]

I don't understand these lectures but I am thrilled that there are these really intelligent people who are so enthusiastic about their field / s of knowledge. I am happy to be lost amid knowledge that is far beyond my own intelligence level!

[@MrAlcides1611]

Thanks to introduce us Alan Guth, a Legend in Modern Science! Great Masterclass by a great Scientist!

[@moisesmohamed6023]

Instablaster.

[@TheSonicfrog]

simply outstanding! i'm a lay person and i grokked nearly everything Alan discussed

[@mainakmazumder6536]

I wish I had a teacher like you!

[@climbeverest]

Only 25 places are available for each masterclass, we are privileged to be able to see this lecture!

[@marc-andrebrunet5386]

Nice answer !!

[@purplewizard]

ROCK AND ROLL GUTH!!

[@climbeverest]

Wow Dr. Guth your students are blessed to have heard your lectures, thanks for making this public!

[@continentalgin]

I love how he is patient with all questions and is nice to go into further explanations. A top professor.

[@suptisarker6796]

You are my favourite teacher and cosmologist. I want to get a book about inflationary big bang theory in bangla.

[@wordysmithsonism8767]

Wonderful lecture

[@fromra8569]

I love his lectures

[@billbrett365]

Excellent video.

[@walterbishop3668]

Thanks for uploading

[@mvs9122]

I like to imagine the moment of big bang as an absolutely bright light at every direction that keeps getting dimmer as the universe expands and new particles come to being and all these particles are very close (fm distance) like bee swarms, instead of the explosion moddel often displayed. I wonder how off i am?

[@silent00planet]

the trouble with this subject is that it may be that there is a limit or ceiling to understanding no matter how many postdocs we throw at it - Einstein Schrodinger Heisenberg Dirac ... seemed to have some sort of intuition to help them or have they only discovered the simple basics and the difficult or impossible bits await. for example is the universe only a complexity machine or running according to a set of rules or an organism that learns and makes up new rules?

[@sherlockholmeslives.1605]

So John Denver didn't die after all.

[@davidwilkie9551]

If an isotropically inflated, (spun out in permanent structure from an apparent singularity, BB), medium of time information, ..has the mathematical framework of wave-like relative intensity due to the apparently random occurrence of crystal resonance, (entanglement-phased / multi-frequency modulated), and associated implied shaping-curvature of the ratios of numbers, ...is it possible that the universal wave/bubble of resonance, is a "local" incidence of the superposition of primes in potential relative existence. Ie Entangled Eternity is an isotropic field that conducts information throughout the universe, in a hierarchy of Quantum Fields, and in constant shifting focus, but overall metastable equilibrium? (To restate the gist of the lecture? Quantum Fields are the "ghost in the bubble")

[@Mikkel54]

So with Inflation the speed of light is LARGE ? ... Guth mentioned c very shortly, but no conclusion ...

[@ElwoodAndersonNV]

At the time the cosmic background radiation was observed there was probably a lot more matter outside the visible horizon than within it and gravity had become positive. So the mass outside the horizon could be accelerating the mass within the horizon outward. Isn't this a possible source of what is now described as "dark energy"? Since the unobservable matter outside the horizon is accelerating away faster than the matter within the horizon this could also mean that the "dark energy" effect could be reduced as time passes.

[@Raydensheraj]

Reading his Book about Inflation and it's spectacular. Besides Brian Greene one of the best in explanation of Astrophysics, Cosmology/String Theory/Multiverse Hypothesis etc Looking for great Books on the four fources especially Beta Decay? Any suggestions?

[@sparhopper]

34:00 There it is...

[@PaulRoneClarke]

Stephen King knows a lot about physics these days

[@gusgebzz]

LOL!

[@SampleroftheMultiverse]

If every thing is just Fields, would the big bang energy just be a increase in the energy in a field?

[@timblizzard4226]

Yes, in many many fields. But the crazy thing is some fields have positive energy and some fields have negative energy, and the amount of both in the visible universe may actually be zero (its definitely very close to zero).

[@martinzitter4551]

Observable universe may be a clearer term than visible universe.

[@timblizzard4226]

Martin Zitter That's practically tautologous IMHO - the speed of light is the same for all electromagnetic waves, the only thing which makes the visible universe any smaller in a practical sense is red-shift.

[@martinzitter4551]

Tim Blizzard ~ We recently began observing the universe via gravitational waves. They are neither visible or electromagnetic in nature.

[@timblizzard4226]

Martin Zitter But they travel at the speed of light. You cant argue with Einstein.

[@NathanOkun]

If the universe is to come into existence once, then there is absolutely no reason that this event would not be repeated an infinite number of times and result in an infinite number of other universes. What would stop it? Only if there were external rules to prevent this would this not occur, which means that there is an external "Omniverse" outside of all of these universes that can exert things on our and other such universes. Thus, you have to have a universe of some unknown sort surrounding all such universes like ours, which means that, by definition, our univwerse is not the only one. I would also assume that any rules of this Omniverse would be different from ours over most of its extent (whatever the word "extent" might mean here) and most other forming universes inside it would most probably be nothing at all like ours in any ways whatsoever.; a multiverse of multiverses, all different...

[@vMaxHeadroom]

Wouldn't Inflation be both the start and end of the universe? In that a small inflating region would create the universe and then as the universe coasts and the dark energy takes over (Dark energy is inflation but now with much less energy) and ultimately dominates and into the big rip which is that start of a new inflation area starting a new universe...so a bouncing universe completely driven from start to end by inflation. What I am trying to say and badly is that dark energy is inflation! Hope some understands and can correct me as I am no scientist! Alan Guth is just brilliant...

[@shiblyahmed3720]

If we do not have any clue of what space is expanding into, it is perhaps pointless discussing how space expanded to begin with!!:)

[@jerk3444]

I thing Dr Alanneeds to modify his prononciation for students. In a lecture there are many many key words which must not be confused, then clear prononciation plays very important roll. Pedagogical lecture consist two parts, to know the subject (which Dr Alan has it at the very high level ) and how to transfer the knowledge to students is the other. How to transfer the knowledge to the students is not less important as the first one. I am very grateful Dr Alan.

[@vaxxedfilms7477]

"newton missed that."

[@johnfraser8116]

Dr Guth says that the hollow sphere contracts because of its own gravity. However, he also said that there is no gravity within the sphere. So where is the gravity he is talking about?

[@leaettahyer9175]

Why does this dude act like he is some sort of Mr Wizards’ World Christ figure ?

[@santhikrishnans3932]

Where exactly is this expansion occuring ?

[@astronomianova1]

Santhikrishnan S Everywhere or to reuse a term of Minkowski's: Everywhen. The only difference is the type of expansion has become non-inflationary in our patch of space. We do not know how big this patch is, except for a lower bound. It is likely inflation only ended for our patch and other disconnected patches but continues everywhere else.

[@santhikrishnans3932]

Thank you for replying.But What does 'our patch of time mean'? and where is this 'everywhere else'?

[@astronomianova1]

+Santhikrishnan S "Our patch of time" doesn't mean much I don't think. By our patch of space (or space-time but the important concept here is expanding space) I think Guth is referring to the region of space, that contains us, where inflation stopped so that this region space is no longer being driven apart at a rapid rate. So our patch would be bigger than but include our observable universe. There are 2 important consequences to consider: 1. Inflation would likely stop in several patches of space, not just the one we are in. 2. the space between the patches is still inflating (growing ~exponentially) so that these patches would be separated at a great rate. So if we call our patch of space our universe then we could call the other patches other universes. None of this will ever be observable it seems. All we can do is try to find out if inflation is true in the region of space-time we can observe. If inflation did happen then we will have to take its consequence of creating many universes seriously.

[@santhikrishnans3932]

Sir/Madam, Thank you for your valuable information.

[@69krell]

Instead of big bang, couldn't everything be spinning like a top and so the galaxies at the edge seem to be going away from us and also explain dark energy tugging against gravity?? just thinking in my small brain :)

[@timblizzard4226]

But that would mean all the galaxies are flying away from a central point around which the universe is spinning, and since that we see all the galaxies moving away from us at the same rate in all directions, that would mean the entire visible universe, with hundreds of billions of galaxies, is spinning around us for some reason. How would we explain that? Also I think we would see space distortion over large distances, which we don't. The "big bang" is a very consistent theory, and anyway we can actually see the afterglow of that period in the cosmic microwave background. We literally know that the universe was once dense and hot, and that it expanded.

[@jerk3444]

Sorry a few corrections:I thing Dr Alan needs to modify his prononciation for students. In a lecture there are many many key words which must not be confused, then clear prononciation plays very important roll. Pedagogical lecture consist two parts, to know the subject (which Dr Alan has it at the very high level ) and how to transfer the knowledge to students is the other. How to transfer the knowledge to the students is not less important than the first one. I am very grateful Dr Alan.

[@Fransamsterdam]

I think you need to shut up.

[@zetmoon]

You should check you own pronUnciation!!!

[@Eigil_Skovgaard]

A modern Jules Verne, only this Gutter fellow is on a payroll.

[@willemhilton4258]

How is it that nobody seems to understand that our Universe evolved out of an enormous star?

[@kenadams5504]

Because it didnt.

[@sacriptex5870]

scam artist

[@cheyanne1161]

Mr Guth you are a great physicist, but so long as you do not believe in the MOST HIGH GOD that knowledge of yours is not worth nothing. It's like having a great wealth but refusing to spend a penny of that to help the ones who need that help.

[@Alex-fx5es]

seog servant Please, get out and don't troll if you don't have anything of value to say. This video is about inflation, and has nothing to do with ancient myths or imaginary figures. Guth nor hardly any reputable scientist believes in the primitive, useless concept of something called "god." Human intelligence and knowledge has advanced and matured to the point that most intelligent and educated people have abandoned the absurd, ancient, unfounded, supernatural ideas of our ancestors.

[@cheyanne1161]

AG You have no clues on what values are. Unfortunately this great country consist of a lot of uneducated people like you who have the ignorance robe on and are blind to all these signs of design in our Universe.

[@Alex-fx5es]

seog servant How the fuck would you know if I have no clue what values are? How the fuck do you know how educated I am? Blind to what signs of design? There aren't any signs of design at all. That's why most scientists and many others reject design and see how absurd it is - but yet they're uneducated and the primitive myth-believing hordes are more enlightened? OK...if it makes you feel better.

[@cheyanne1161]

Mandingo Blax If this is your final say, I must say you need some brain.

[@cheyanne1161]

Mandingo Blax My problems are dumb people like you. Why you choose to have no life, and somebody else does the thinking for you? I am fighting to eliminate ignorance among stupid people.