Recent content by Quantour

I am talking about Top10-20 Worldwide.

I am currently a final-year undergraduate student whose primary major is Physics. I double major in Computer Science, and my grade is currently near-top in my department from a prestigious university (non-US, top in my country). My research experience during undergrad has primarily been about...

(x, -x) doesn't necessarily have to be in quadrant 4. (Should x be positive?)

1) For a quadrilateral inscribed in a circle, the sum of opposite angles equals to 180 degrees. 2) Inscribed angle theorem

In your Feynman diagram, ##k_1## and ##k_2## are not completely independent due to momentum conservation. The same goes for ##k_3## and ##k_4## as well. I guess ##k_1## and ##k_2## in the final "correct" solution denote different momentum lines compared to those in the Feynman diagram you draw.