Cosmology Lecture 10

(March 18, 2013) Leonard Susskind discusses the inhomogeneities in the cosmic microwave background, and derives the current theory whereby these inhomogeneities are created by quantum fluctuations in the inflaton field of the early universe. These fluctuations lead to variations in energy density that ultimately result in the formation of galaxies.

Originally presented in the Stanford Continuing Studies Program.

Stanford University:

Continuing Studies Program:

Stanford University Channel on YouTube:

[MARILYNANDERSON]

The most pleasurable educational experience I have discovered. I have watched the series a dozen times....Prof. Susskind obviously is very interested and enthusiastic on this subject.Then the comet grazing the sun and turning up a zombie... What a cosmic time I am having...Thanks, Stanford People!

[dansola]

These lectures are truly astounding to be able to access. Almost a direct line to Dirac, Einstein and Newton for free. I can follow the calculus for the most part but more than that I have learned to appreciate how the math is really the "thing" and deeply distinct from the metaphors we try to use to visualize what the math means. You can't interrogate the metaphors -- really --unless you can interrogate the math.

[ericmelton]

I absolutely love this lecture. Amazing. Thank you I will watch it over and over till I finally understand.

[hasanshirazi]

The comparison of damped oscillator and the Universe was very well explained by the Professor, Its amazing that universe is such that we can study it and understand what is going on.

[gizmo]

Great. LS is the only person who helps me understand physics. I don't talk about computations, BUT REAL physics indeed.

[AT-]

Thank you so much for these precious teachings.

[DaMav]

Thank you so much for publishing #10; been looking for it every day

[Dave]

Really happy with this lecture, thank you. Wave equations are amazing,

[MARILYNANDERSON]

LOL- I see Prof. Susskind worked so hard that he slowly slid down and down and slipped over the edge- and ripped the elbow of his shirt.... This is funnier to me than the SpaceX jacket of a few sessions ago...which I thought was a blast ... Oh, my. I think I am having a quadripole moment. Sensational!

[augustuscaeserb]

almost sad when the lectures are done with...still confusions to deal with...we almost know syllabus's first printed page




thank you,
MASTER SUSSKIND
STANFORD UNIVERSITY
THE ONES WHO TOOK THIS INITIATIVE AND TEAM

[infinummjb]

Prof. Susskind remark at 45:10 that redshift is directly related to the amount of mass at the point of origin seems to support the notion that redshift is caused by gravity and that the Universe can be thought of as constantly collapsing rather than expanding.
If one were at the center of a black hole the Universe would appear to expand even though it would be collapsing when viewed from outside.
In this perspective WMAP can be understood as the event horizon seen from inside of a black hole ;)

[jonabirdd]

Those are absolutely beautiful blueboards

[YossiSirote]

This should be added to the cosmology playlist

[STONECOLDET]

When it comes to cosmology what I'm primarily interested in is hypothetical gravitaional astronomy because if its possible to derive images from gravitational waves then observing the gravitational background radiation from the instant of the beginning of the universe behind the quark gluon barrier will be possible

[ericmelton]

When this guy says he don’t remember. He expects you to remember.

[vkoptchev]

So if we look at the Higgs mass as a macro state and all the parameters which determine its mass as microstates, we are in a macro state with very low entropy.

[Onoma]

Hopefully if I am intelligent enough to wrap my brain around Susskind's lectures, I'd know that already.

It was dry humor.

[ericmelton]

After ten times I think the Higgs boson is traveling faster than the speed of light. Relatively breaks down. Like eating breakfast for dinner.

[rfranklin]

That upper blackboard is mechanically underdamped from 1:30:00 onwards, but what the heck is driving it?

[willsee]

Are the temperature fluctuations in the CMB really due to gravitational redshift???