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location Beijing
age 24
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I am a graduate student in high energy phenomenology.


Feb
26
asked Effective Field Theories of QCD
Feb
12
comment Evaluate $1$-loop contribution to the $4$-point Green's function
The $\int_0^1d x$ is copyed from (2). The two $I$s are not the same in your comments.
Feb
12
comment Evaluate $1$-loop contribution to the $4$-point Green's function
For $m^2=0$, (3) can be expressed by the Euler integral.
Feb
12
comment Evaluate $1$-loop contribution to the $4$-point Green's function
We cannot obtain an analytical expression of the integral (3). For $d=4$, (1) is log divergent.
Feb
12
comment Evaluate $1$-loop contribution to the $4$-point Green's function
And $\Delta=q_{\mathrm{E}}^2x(1-x)+m^2$, it is independent of $p_{\mathrm{E}}$.
Feb
12
answered Evaluate $1$-loop contribution to the $4$-point Green's function
Feb
10
comment Why does Stephen Hawking say black holes don't exist?
Is the word "correct" a typo in "I think most people (not including me) believe that classical General Relativity is correct near the blackhole horizon."?
Feb
3
awarded  Popular Question
Jan
22
awarded  Necromancer
Nov
27
revised Are there any exact solutions in the Standard Model of particle physics?
[Edit removed during grace period]
Nov
27
answered Are there any exact solutions in the Standard Model of particle physics?
Nov
25
asked Noether current for the Lagrangian without Lorentz invariance
Nov
16
awarded  Yearling
Nov
16
awarded  Nice Question
Sep
5
comment Reduced graphs and pinch-singular surfaces
Thank you. I will check that.
Sep
4
asked Reduced graphs and pinch-singular surfaces
Aug
18
comment Why the functional integral of a functional derivative is zero?
Sorry for late reply. As Trimok says, $F(-\infty) - F(\infty)$ makes sense.
Aug
17
comment Why the functional integral of a functional derivative is zero?
The functional integral of a total derivative vanishes, which results from the variation of fixed boundary conditions.
Aug
14
answered Calculating the commutator of Pauli-Lubanski operator and generators of Lorentz group
Aug
3
answered What software programs are used to draw physics diagrams, and what are their relative merits?