1,660 reputation
516
bio website math.berkeley.edu/~cgerig
location UC Berkeley
age 25
visits member for 2 years, 11 months
seen 7 hours ago

Undergrad: Allen Hatcher's recommendation got me into Cornell (I learned Algebraic Topology through his book in high school, along with some email correspondences). But I majored in Engineering Physics and did experimental research on gravity.

Grad: I started my PhD in experimental atomic physics at Berkeley, but quit to do math. I am now a student of Michael Hutchings!


Oct
8
answered Visible light and colors
Oct
8
comment Visible light and colors
@ZhengLiu (and @Ignacio), if you read carefully, he is not asking about the misleading-ness of the coloring-label for quarks. He is using this to motivate the explicitly stated question.
Oct
2
comment Classical Hamiltonian involving product of factors whose quantum analogues don't commute
@Qmechanic, sorry that example is due to working in curvilinear coordinates. I should've clarified that I am considering flat Cartesian coordinates (as stated in Dirac's remark, though I didn't write it while paraphrasing).
Oct
1
revised Classical Hamiltonian involving product of factors whose quantum analogues don't commute
Added relevant article and explicit Hamiltonian
Oct
1
accepted Classical Hamiltonian involving product of factors whose quantum analogues don't commute
Oct
1
suggested suggested edit on Classical Hamiltonian involving product of factors whose quantum analogues don't commute
Oct
1
comment Classical Hamiltonian involving product of factors whose quantum analogues don't commute
...What is your elementary system / Hamiltonian? It can't be just $\hat{K}$ because that is a free particle, and subsequently this is irrelevant to the question!
Oct
1
revised Classical Hamiltonian involving product of factors whose quantum analogues don't commute
edited title
Sep
30
comment Classical Hamiltonian involving product of factors whose quantum analogues don't commute
This doesn't answer my question at all. I know what the problem is; and the last paragraph cheats in a way (it's not in the spirit of Dirac's remark).
Sep
30
comment Classical Hamiltonian involving product of factors whose quantum analogues don't commute
@EmilioPisanty, I did not misread it at all. I'm asking for examples of systems where this "rare existence" arises.
Sep
30
revised Classical Hamiltonian involving product of factors whose quantum analogues don't commute
added 130 characters in body
Sep
30
asked Classical Hamiltonian involving product of factors whose quantum analogues don't commute
Sep
25
comment Black Holes can't exist?
No, it is flawed just like every other attempt in the past. Read Unruh's official response here: iflscience.com/physics/…
Jun
22
answered Special relativity and imaginary coefficient of the time coordinate
Apr
13
comment Simple & intuitive explanation of superfluidity?
physics.stackexchange.com/q/76578
Apr
1
awarded  Nice Answer
Mar
5
comment Intuition behind Faraday's Law?
@Danu: False, I did answer the question. You can't keep asking "why", because it'll go ad infinitum. The explanation for a changing magnetic field inducing an electric field will take us far astray from the intended question here! Why does an electric field push electrons? Why does an electric field ever exist? Why does the electron stay in the wire?
Mar
4
answered Intuition behind Faraday's Law?
Feb
22
answered Propulsion force
Feb
22
answered Lagrangian formalism and Contact Bundles