Recent content by FraserAC

Thanks very much! The quantum algorithms one sounds good and so does the Decoherence and quantum error corrections. I'll have a look over the next few days and make a final decision, then post it back on here. Very helpful though, thank you!

Well, I enjoy the abstract theoretical nature of the maths, but also like attempting to connect it to something physical (I.e. in the project last semester I discussed spin of electrons and how to manipulate it physically using a set up similar to the Stern-Gerlach apparatus, as well as...

You can take out a global phase factor of -1 or ( e^(i*pi) ) from the second one and return the first one you mentioned. (By which I simply mean you can take out a factor of -1). This phase factor does not effect something called the expectation values of the Hermitian operator, which means...

Hi! I'm going on to the masters year of a theoretical physics course and I need some inspiration for my dissertation. Last year I did a one semester long project on quantum computation. (More specifically I discussed the general idea of a qubit, a simple method of realising a qubit using spin...

I know this will be a very unsatisfactory answer, but I think the fact that objects act to minimise their potential energy is just a experimentally proven fact of nature, I don't think it's actually known why it happens. Something worth investigating though if you're interested in it. Maybe you...

Thanks guys :)

vanhees71, I'm just starting a module on classical mechanics and spotted this thread, to digress for a second, if that's ok, I understand the Langrangian is L = T - V and the q (dot) values are generalised velocities, but what's the g matrix that you've written in your non-relativistic...

Scanning tunnelling microscopy works via the principle of quantum tunnelling. It does not work like a conventional microscope, (an object under study is bombarded with photons and then passed through a magnifying lens, allowing the user to see an image). STM's have a needle, like you mention...

Hi, I'm in the masters year of a theoretical physics course which begins this September. I'm reading the classical mechanics notes ahead of time, and I came across the idea of holonomic and non-holonomic constraints. I understand that in the case of a holonomic system, you can use the...