Where do particles come from? - Sixty Symbols

Professor Ed Copeland discusses the origin of particles - including talk about inflation, re-heating, the Big Bang, and oscillons. More links and info below ↓ ↓ ↓

New paper by Ed and collaborators...

Sixty Symbols videos by Brady Haran
Animation by Pete McPartlan

[philanderson]

Love hearing Brady's questions - it's like having a representative for physics interested amateurs like me - but asking the right key questions. amazing video as ever...

[nitinjaglan]

Professor copeland is the professor we never had in uni/school but one we always wanted. Great to see him again on 60 symbols

[joetec]

My favourite Sixty Symbols professor :)

[jajssblue]

This is the best condensed explanation of the inflation model I've heard. Great science communication.

[theultimatereductionist]

I love how he talked so enthusiastically about those ocelots.

[robertelessar]

Maybe call the initiation of inflation "The Cold Open".

[MichaelPiz]

Well then.

I've been following physics with a rather close layman's interest for about 45 years and this is the first time I've heard that the "hot big bang" came _after_ inflation.

Quite a revelation for me and it makes me want to see an episode of Sixty Symbols or Numberphile where someone with the level of knowledge of Dr Copeland is in the middle of this sort of explanation and suddenly stops, gets a blank, mildly puzzled look on his face, says, "I've just thought of something I hadn't before, " and goes into some furious computation which results in the solution to a heretofore unsolved physics/mathematics problem, yielding a massive breakthrough in the field.

So let's get crackin' guys!

[SpriteGuard]

"you need a better term for the start of inflation"

I feel like this is a good point to incorporate the term Horrendous Space Kablooie, introduced by the Watterson-Calvin-Hobbes paper.

[swagatsauravmishra]

Excellent video! 🎉 Many thanks for the kind reference to our work (and our new paper at the end). Ed and Brady rock !! Will think of a new term for the start of inflation in our next paper :-)

[iLLadelph]

i always love Professor Copeland and his giddy excitement explaining the fine details in the maths leading to the speculative conclusions and especially his recognition of their benefits and flaws. he's always ready to answer Brady's harder questions and can point immediately to the maths for any given wonderment. its stuff like this that inspires me to further pursue astrophysics as a career

[NeonsStyleHD]

WOW!!! That was by far THE Single BEST video this channel has produced in the last 13 years! It was deep, didn't dumb it down, explained it beautifully and filled a bloody big hole in my understanding of cosmology! I can't thank you enough! I can't wait to see what happens to the expansion rate of 1/H as Dark Energy becomes better understood; assuming I'm still here! BIG *_Thankyou!_*

[robdevries]

We need way more Ed Copeland on this channel!

[creatorsremose]

"...where we think these particles come from." Such an important and wise phrasing... and then there're articles and documentaries stating these hypotheses as fact. I wish more educators were like Prof. Copeland.

[luckyluckyy]

Favourite Professor, calm, focused, competent

[aL_]

cannot go wrong with an Professor Copeland video :)

[MegaOoga]

I love your drive to name things, scientists are spending all their energy on doing science and leaving none left for the creativity of naming things.

[NicholasEllis-rsnx]

My 10 year subscription and I’m so excited to see a rare Ed new video dropped Thanks guy!

[x]

prof copeland is not only very nice, but always very insightful

[NomenNescio]

Professor Copeland, it's always very nice to listen to this gentleman.


There ought to be more content with him on youtube.

[tiagotiagot]

The curvature of space thing is better illustrated by talking about the principles of Euclidean geometry. There are a few ways to approach it, but for me what comes to mind first is stuff about infinite parallel lines. In a flat space, parallel lines remain parallel forever; in a positively curved space, parallel lines will converge, and in a negatively curved space, parallel lines will diverge. This works the same if you're talking about a 2d surface (the ball and saddle visuals there) as well as 3d space. Gravity introduces positive curvature, and Dark Energy introduces negative curvature, and it turns out it all seems to balance out at larger scales making the Universe as a whole "flat" in all ways that have been attempted to measure it (IIRC, in general the margin of error is so small in most circumstances the curvature is treated as just being perfectly zero).