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| bio | website | N/A |
|---|---|---|
| location | Vancouver, Canada | |
| age | 27 | |
| visits | member for | 2 years, 5 months |
| seen | 1 hour ago | |
| stats | profile views | 528 |
Relevant for this page: Experience with Java, C/C++, OpenMP, MPI, Python, Lua Oh, and LaTeX, of course :)
Student of Computer Science and Physics at RWTH Aachen University.
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2h |
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What are units actually? True. I have added a discussion of this in the answer. |
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2h |
revised |
What are units actually? discussion of log |
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3h |
answered | What are units actually? |
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4h |
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Change of basis in non-linear Schrodinger equation The general idea is then to "compare coefficients": Because the plain waves are linearly independent functions, the left-hand side and ride-hand side must match coefficient-wise. But looking at what you've got I'm not so sure if my naive approach works :-( |
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19h |
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Is every quantum measurement reducible to measurements of position and time? Hm. Nice question. Initially I thought "well what's with spin", but of course the stern gerlach experiment is an example of how to convert spin to position. |
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22h |
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Change of basis in non-linear Schrodinger equation My intuition and first attempt would be to write $\psi_{LP}(k) = \int dx e^{ikx} \psi_{LP}(x)$ and substitute that in the equation. |
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1d |
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Interpreting the results Your "x" axis so far is just counting the bins. You have to convert it to "time intervals", and this conversion does of course depend on the number of bins. |
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1d |
awarded | Nice Question |
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1d |
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Magnetic Field on a particle between two Helmholtz Coils Hi and welcome to the Physics Stack Exchange. Please note that here we do not generally answer "homework" questions of your style. Rather, tell us what work you've done so far and where exactly you're stuck. |
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1d |
revised |
Magnetic Field on a particle between two Helmholtz Coils edited tags |
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1d |
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Physics of a cold and hot top However, the $r$ in $I = mr^2$ will be slightly larger in the room temperature top due to thermal expansion |
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1d |
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Hilbert space of harmonic oscillator: Countable vs uncountable? Can you briefly add why we know that there exists a countable orthonormal basis for $L^2(\mathbb{R})$? |
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1d |
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NP-completeness of non-planar Ising model versus polynomial time eigenvalue algorithms In reply to the question why it breaks down at, for example, $d = 2$ would be that the Ising model in 1 and 2 dimensions has an exact solution that we already know: nyu.edu/classes/tuckerman/stat.mech/lectures/lecture_26/… |
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1d |
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NP-completeness of non-planar Ising model versus polynomial time eigenvalue algorithms Well, just because a Hilbert space is very large doesn't mean the ground state is necessarily hard to compute. The harmonic oscillator, for example, has an infinitely large Hilbert space but the ground state is very easy to obtain. This expresses the fact that while we all know that brute force methods don't work on NP problems, there might be "clever" algorithms that are faster, we just haven't found them. |
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1d |
reviewed | Approve suggested edit on Optics alignment of scanning microscope |
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1d |
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Hilbert space of harmonic oscillator: Countable vs uncountable? Ah, that clears it up. I guess one problem is that while of course I can expand any wavefunction in terms of $\delta$-functions, those $\delta$-functions themselves are, among other things, not square-integrable. |
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1d |
accepted | Hilbert space of harmonic oscillator: Countable vs uncountable? |
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1d |
asked | Hilbert space of harmonic oscillator: Countable vs uncountable? |
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1d |
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Homework Help Please? Hello and welcome to Physics StackExchange. This is not really the place to ask homework questions. If you have a specific question about where you're stuck with the problem, we might help you. Please show the work you've done so far. |
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1d |
answered | NP-completeness of non-planar Ising model versus polynomial time eigenvalue algorithms |
