Recent content by dreamspy

How would this operator be implemented physically if we had a quantum computer? In Grover's algorithm this magical operator is often called "phase inversion". Here is the operator from wiki: https://wikimedia.org/api/rest_v1/media/math/render/svg/07fb23bffa787430b084971c6a108a8f6ff6c2b3 It’s...

This is a good point. I've given mechanical engineering a though before. But I was told that it's usually quite difficult to get a job in that field. Not sure if this is true, anyone have some thoughts on this?

Actually forgot to mention that, I have a standing desk. It helps, but still not enough. Even though I'm standing it's not enough movement involved I guess, so I always lock up and get tense even when at a standing desk.

Hi there My question in short is: "What would be the best field to move into if I'm looking for non-desk physics/engineering jobs" Let me elaborate a bit on this. I have a BA degree in fine art, some projects can be seen here http://frimannkjerulf.tumblr.com/ I also have BS degree in physics...

Given a strong enough field, then stating that a simple plasma should form is maybe a little to much of a simplification? If we get a soup of electrons and ionized hydrogen atoms we will have attraction and negative attraction between particles, and this state can hardly be stable.

Yes you are right, the graph is highly exaggerated. But still, does the slope of the asympotes matter? That should only affect the time needed for the electrons to tunnel, right?

I'm not sure why you are talking about anodes and cathodes? The container could be a complete dielectric, and the source of the electric field shouldn't matter.

But if the electric field would be strong enough, we should get plasma?

You are right. If the atoms ionize, they should go towards the -z direction, and probably meet a free electron from another ionized atom, and combine back to a uncharged atom. But when the atoms at the edges of our container ionize, the resulting electrons can't meet a proton to desorb into (if...

Here comes a pretty hard question, which not even my QM teacher has been able to answer. When we think about one hydrogen atom, and put it in an electric field along the z-axis \bar E = \bar e_z E. Then the potential for a hydrogen atom will look like this: U = -\frac{e^2}{4\pi \epsilon_0...

actually I was able to finish the problem using the foundation I posted in my first post. I simply say that the extra energy is divided to the kinetic energy of the muon and the neutrino: delta E = T(muon) + T(Neutrino) The momentum of the muon and the neutrino are equal but in oposite...

Homework Statement We have the decay process: pion --> muon + anti muon neutrion How long does the muon travel before it decays? (the pion is stationary before the decay) The answer is supposed to be d = c * t (m(pi)^2 + m(mu)^2) / (2 m(pi) * m(mu) ) where t is the mean lifetime of the...

But what if we have u_{\frac{1}{2}}^1u_{-\frac{1}{2}}^2 How do we calculate \underline{\hat S}^2u_{\frac{1}{2}}^1u_{-\frac{1}{2}}^2 ?

Sorry that was a mistake. That should have been a \ne. I fixed the original post.

Well we have that: \underline{\hat L }^2 = \hat L_1^2+\hat L_2^2+\hat L_3^2 \hat L_1 = \hat x_2 \hat p_3 - \hat x_3 \hat p_2 \hat L_2 = \hat x_3 \hat p_3 - \hat x_1 \hat p_3 \hat L_3 = \hat x_1 \hat p_2 - \hat x_2 \hat p_1 \underline{r }^2 = \hat x_1^2+\hat x_2^2+\hat x_3^2 and...