Physics@FOM 2015, Alan Guth - Inflationary Cosmology: Is Our Universe Part of a Multiverse?

Alan Guth's lecture starts at 13.20

Inflationary Cosmology: Is Our Universe Part of a Multiverse?
Inflationary cosmology gives a very plausible explanation for many features of our universe, including its uniformity, its mass density, and the patterns of the ripples that are observed in the cosmic microwave background. Most versions of inflation, however, imply that our universe is not unique, but is part of a possibly infinite multiverse. Guth talks about how inflation works, and why he believes that the possibility of a multiverse should be taken seriously.

About the conference:

[raymondlai]

Dear Stichting FOM =)

I would like to say, thank you, for taking the time and effort to both upload and share this video with the youtube family! =)

I hope you have a nice day, Stichting FOM! =)

Kind Regards

Raymond Lai (Member of the Physics Family)

[tomneedham]

I cannot help but comment on the plethora of idiots who have posted abysmally ignorant comments on this lecture - or other lectures of equal substance that I have viewed on YT.   Please give the likes of Alan Guth, Andrei Linde, Lawrence Kraus, Steven Weinberg, Leonard Susskind, Paul Dirac, Robert Dicke, Jim Peebles, George Gamow et al, a semblance of intellectual approbation in what they have contributed to cosmology, and the nature of the Universe.  These few, these happy few, this band of brothers - among many untold others - are the Gods of Mount Olympus.  Zeus be praised!

[berndp]

Guth astonishingly explains what is possibly the central inside of a black hole that is big enough to actually be volatile enough to eventually create that "small zone" of repulsive gravity that is big and strong enough to push the whole thing apart (means actually to produce a "big bang", that creates a new universe using the fluctuating energy it starts to convert into actual protomatter and lateron matter). Means: black holes that are observed throughout the actual universe are way too small enough yet to be that "unstable".But have some fluctiations inside of them already which are within the closed-boundary parameters to not obliterate the whole thing. A good indicator of such is the already observed "hawking radiation", showing it not being entirely stable.

[ChristopherArenth]

beautiful voice in every minute that video was great for leraning Thank you

[InLohmansTerms]

Physics conferences are where well-meaning and surprisingly funny geniuses go to have their hilarious jokes fly over the heads of other geniuses who are not in the mood. Why am I the only one laughing?

[doncourtreporter]

Awesome to realize we live in the time of Weinberg, Guth, Krauss and all the rest.  The best of times....

[wordysmithsonism]

I'm not sure why inflation at multiple times light speed is better than multiples of light speed for expansion.

[richardjameswinter]

Imagine the universe didn't evolve from a tiny "partical", but instead, burst through a hole in the space-time fabric; a rip. In 3 dimensions of course, not a two dimensional plane. Like an explosion after the fabric rips. Where it came from I don't know of course. I keep having this idea.

[SampleroftheMultiverse]

Buckle that field and the energy under the curve grows.

[mdjones]

So is it possible that dark energy is a weak form of inflation?

[jinpillp]

multiverse is common sense KNOWLEDGE. nowdays. NO DOUBT about that. we are part of infinity

[cheyanne]

Of course it was. When was the last time you needed something and you waited for that to evolve?

[cymoonrbacpro]

Fact; Proof of parallel universes is still beyond the domain of science.

[time]

WHERE CAN I FIND HIS INFLATIONARY MODEL FOR FREE WITHOUT PAYING

[jackspecht]

The etymology of multiverse is confusing. Considering the actual definition of universe it is a flawed descriptive . This is one reason why, over time science ideology and theoretical modeling become convoluted and non intra communicable .

[XDireWhiteFangX]

Sucks that BICEP2 just found dust instead of gravitational waves...

[ElTiti]

¿Cómo no te vas a dormir con el pesado de Alex Vilenko si estas desbordado de trabajo? Tu despacho parece un juzgado Español. Parece ser que según el había algo antes del Big Bang: la antigravedad. Tengo un libro suyo sobre la teoría de múltiples Universos.

[arkadiusx]

16:20 o if matter -hot dense soup of particles .. filled all space uniformily is IT than expanding and cooling in to ? (another all space?)  why after 14 bln years of expansion=runaway from primal soup <long period after register background radiation from furthests places of void we "travel" < - moving as cosmos grows (not only from much narrow area of primal density -before cooling and growth)

[nicholaspisca]

jesus f christ. 13 minutes of intro? EDIT people EDIT!

[MrMollytov]

13:10 Nice schnauze, followed up by nice posture at 13:30. Not at all making things worse