# Search Results

1. Post

### A Path integral formula for a state with non-trivial time dependency

Yes, that's what I'm asking. And you're right, its not very helpful to talk about the ground state in an arbitrary time. What I'm saying is that...
Post by: ShayanJ, Feb 9, 2017 in forum: Quantum Physics
2. Post

### A Path integral formula for a state with non-trivial time dependency

That's true, but the difference is your formula gave the wave-function at time $t$, in terms of the wave-function at time $t_0$. But the...
Post by: ShayanJ, Feb 9, 2017 in forum: Quantum Physics
3. Post

### A Path integral formula for a state with non-trivial time dependency

Well, its the same assumption people make when doing scattering calculations, that there is no interaction at $t=\pm \infty$. So any...
Post by: ShayanJ, Feb 9, 2017 in forum: Quantum Physics
4. Post

I really appreciate it @stevendaryl, but that's not the formula I'm talking about. The formula I want to prove, is $\displaystyle... Post by: ShayanJ, Feb 9, 2017 in forum: Quantum Physics 5. Post ### A Path integral formula for a state with non-trivial time dependency We have$ |\Psi(t)\rangle=G(t)|\Psi\rangle $, so$ \langle x|\Psi(t)\rangle=\langle x,t|\Psi\rangle=\langle x|G(t)|\Psi\rangle $, which means... Post by: ShayanJ, Feb 8, 2017 in forum: Quantum Physics 6. Post ### A Path integral formula for a state with non-trivial time dependency Yeah, its true that the existence of the Green function doesn't depend on the Hamiltonian being time-independent, but how can you prove$...
Post by: ShayanJ, Feb 6, 2017 in forum: Quantum Physics
7. Post

### PF Member Photos Part 2

In my friend's lab. [SPOILER]
Post by: ShayanJ, Feb 6, 2017 in forum: General Discussion
8. Post

The usual derivation is like below: $\langle x|y,t \rangle=\langle x|e^{iHt}|y\rangle=\sum_b \langle x|e^{iHt}|\psi_b\rangle\langle... Post by: ShayanJ, Feb 6, 2017 in forum: Quantum Physics 9. Thread ### A Path integral formula for a state with non-trivial time dependency Consider a system with a time-dependent Hamiltonian. We know that the evolution of the state of this system, is given by$ \displaystyle...
Thread by: ShayanJ, Feb 3, 2017, 14 replies, in forum: Quantum Physics
10. Post

### Job Skills Increased demand for STEM in the next 4 years?

So if programming jobs are for CS majors outside of theoretical CS, what is the job of computer engineers in US, specially software engineers? Are...
Post by: ShayanJ, Feb 2, 2017 in forum: Career Guidance
11. Post

### Capacitance and induced charges

That seems completely wrong to me.
Post by: ShayanJ, Feb 1, 2017 in forum: Introductory Physics Homework
12. Post

### Need Help With Gradient (Spherical Coordinates)

Yes, that's correct.
Post by: ShayanJ, Feb 1, 2017 in forum: Advanced Physics Homework
13. Post

### Job Skills Increased demand for STEM in the next 4 years?

Computer science is to computer engineering, as physics is to all engineering. As physicists aren't supposed to be good at building a house,...
Post by: ShayanJ, Feb 1, 2017 in forum: Career Guidance