Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

  7. current community

    your communities

    more stack exchange communities

    company blog
Join us in building a kind, collaborative learning community via our updated Code of Conduct.
Meta User
Network Profile
1,940 reputation
1
12
37

Jia Yiyang

Bachelor degree in Physics. Interested in mathematical aspect of quantum field theory(though ironically not mathematically enlightened, but in continuous training). Getting to know some basics of topological insulators. I will start pursuing a Phd in theoretical physics 2015 at Stony Brook University.

Check out humans' planned journey to Mars!: Mars One Project

I'm no longer active on physics stackexchange, partly due to the decline of the quality of the site and partly due to the abuse of moderation power. See this meta post.

If you need contact me, please send me an email or find me at www.physicsoverflow.org

14 answers
25 questions
~56k people reached

Communities (14)

Top Meta Posts 2 1

Top Network Posts

Top Tags (58)

Score 60
Posts 28
Posts % 72
Score 13
Posts 6
Score 13
Posts 3
Score 11
Posts 2
Score 10
Posts 5
Score 9
Posts 3
View all tags →

Top Posts (39) All Questions Answers | Votes Newest

23 Is it really proper to say Ward identity is a consequence of gauge invariance? Jul 12 '13
17 Time ordering and time derivative in path integral formalism and operator formalism Jul 23 '13
17 EM wave function & photon wavefunction May 19 '12
16 Can we “trivialize” the equivalence between canonical quantization of fields and second quantization of particles? Nov 18 '13
16 Topological insulators: why K-theory classification rather than homotopy classification? Mar 19 '14
15 When can we take the Brillouin zone to be a sphere? May 6 '14
15 A curious issue about Dyson-Schwinger equation(DSE): why does it work so well? Aug 21 '13
15 What's the relation between perturbative and nonperturbative QFT? Jul 31 '12
12 Non-covariance of the higher rank propagator (from Weinberg's QFT textbook) Feb 21 '13
11 Can the photoelectric effect be explained without photons? Jun 17 '13
View all questions and answers →

Badges (50)

Gold 1

Rarest
Silver 12

Rarest
Bronze 37

Rarest
View all badges →