Posts Tagged ‘physics’

Bohemian Gravity

Thursday, September 19th, 2013

This is awesome. McGill University Masters candidate Timothy Blaise produced this video to accompany his thesis.

The lyrics…

Is string theory right?
Is it just fantasy?
Caught in the landscape,
Out of touch with reality
On S5 or T*S3

Space is a pure void
Why should it be stringy?
Because it’s quantum not classical
Any way you quantize
You’ll encounter infinity
You see

Must interact
Via paths we understand
Using Feynman diagrams
Often, they will just rebound
But now and then they go another way
A quantum
Infinities will make you cry
Unless you can renormalize your model
Of baryons, fermions
And all other states of matter

Curved space:
The graviton
Can be thought of as a field
But these infinities are real
In a many-body
Loop diagram
Our results diverge no matter what we do…
A Quantum Soup (any way you quantize)
Kiss your fields goodbye
Guess Einstein’s theory wasn’t complete at all!

I see extended 1-D objects with no mass
What’s their use? What’s their use? Can they give us quark plasma?
What to minimize?
What functional describes this
Nambu-Goto! (Nambu-Goto)
Nambu-Goto! (Nambu-Goto)
How to quantize I don’t know
I’m just a worldsheet, please minimize me
He’s just a worldsheet from a string theory
Reperametrized by a Weyl symmetry!

Fermi, Bose, open, closed, orientable?
Modes! They become particles (particles!)
They become particles (particles!)
They become particles (particles!)
Become particles (particles!)
Become particles (many many many many particle…)
Modes modes modes modes modes modes modes!
Oh mamma mia mamma mia,
Such a sea of particles!
A tachyon, with a dilaton and gravity-vity-VITY

(rock out!)

Now we need ten dimensions and I’ll tell you why
(anomaly cancellation!)
So to get down to 4D we compactify!
Oh, Kahler!
(Kahler manifold)
Manifolds must be Kahler!
(Complex Reimannian symplectic form)
If we wanna preserve
Any of our super-symmetry

(Superstrings of type I, IIa and IIb)
(Heterotic O and Heterotic E)
(All are one through S and T duality)
(Thank you Ed Witten for that superstring revolution and your new M-theory!)

(Type IIB String!)
Dual! Dual!
(In the AdS/CFT)

Molecules and atoms
Light and energy
Time and space and matter
All from one united

Any way you quantize…

Lyrics and arrangement by Tim Blais and A Capella Science
Original music by Queen

Higgs Boson, Maybe

Wednesday, July 18th, 2012

Excellent piece in the Philadelphia Inquirer on the Higgs boson discovery. Here’s the lead…

It took a very large village to find the Higgs boson — one with 10,000 scientists and engineers who came from 600 institutions in more than 100 countries. In the variety of languages one hears at the European Organization for Nuclear Research near Geneva, better known as CERN, it resembles the Olympic Village. But its common language is physics, not sports, and CERN differs from the other village in another important way: It aims to advance science through international cooperation; matters of national pride are left at the door.

Meanwhile, out at UC Berkley, it was standing room only in the Chan Shun Auditorium to hear physicists explain WTF all this excitement is about. Full video…

The Wikipedia entry says it best…

Proof of the Higgs field (by confirming its boson), and evidence of its properties, are seen as likely to greatly affect human understanding of the universe, validate the final unconfirmed part of the Standard Model as essentially correct, indicate which of several current particle physics theories are more likely correct, and open up “new” physics beyond current theories. On 4 July 2012, the CMS and the ATLAS experimental teams at the LHC independently announced that they each confirmed the formal discovery of a previously unknown boson of mass between 125–127 GeV/c2, whose behaviour so far was “consistent with” a Higgs boson, while adding a cautious note that further data and analysis were needed before positively identifying the new particle as being a Higgs boson of some type.

Yes, it’s something to get excited about, but cool your electrons as we await confirmation.