Recent content by aaa2

A sum of rectangular functions. 4 of them. you can probably make a convolution with 4 delta functions and one rectangular function to create those.

Ok i will do that i am sorry!

@strangerep Yes i know an operator is interpreted as projector A=|ψ'><ψ'| and thus one gets <ψ|A|ψ>=|<ψ|ψ'>|^2 (if one uses wavefunctions of unit size). Yes i know that i made the error twice even and i am very surprised you are the first to realize. Also i am pretty new to quantum field...

I think Quantum Field Theory from the view of mathematical Physics gives a lot more answers than Quantum Mechanics. With that anything in space behaves according to fundamental symmetries and particles(as you measure them) and their properties are a consequence of those symmetries. The existence...

To me Lagrangian mechanics always seemed more intuitive than Newtonian mechanics in the sense that you are first forced to consider a system in the simplest way possible and then write down the properties you know about it. Everything else is done by the formalism that involves only one big...

I guess you could say that since exactly the way the calculation is done how understand that. The sheet of paper i gave as an example is just a way to visualize it in an intuitive way. I would not see why that is less intuitive than lagrangian mechanics(relativistic or not).

I wouldn't see where i implied that uncertainty is a measurement problem. This was just a comparison by picture why a wavefunction would behave differently after a measurement was done. Actually even this picture implies that the uncertainties are NOT results of the measurement. Rather it...

Maybe i should put it a bit differently essentially everything bahaves like the equations predict because they are direct consequence of fundamental symmetries of space. Imagine a sheet of paper doing wave motions or anything like it if you have no boundary conditions you can choose a phase...

My personal opinion on this matter is to shut up and calculate. It suffices for me to see that in Quantum mechanics when looking at curves that are predicted by classic Lagrangian Mechanics the possible Quantum Mechanical paths are smeared out around the path predicted by Lagrangian Mechanics...

Actually i think i will be staying with MTW since one of my professors suggested it. At my university we don't have any General Relativity courses so i think MTW is a pretty readable book. At least i have much less trouble than with Landau Lifgarbagez that is sometimes nearly unreadable. Some...

So it is a basis that where the base vectors do not commutate but instead fulfil those commutation relations. Ok with that the questions make in MTW on this subject make a lot more sense. Also i learned a more commonly used word for this type of coordinates: non-holonomic basis You were all...

I was actually looking for a rigorous mathematical definition instead of examples. There are several possibilities of what i could deduct from the examples as a definition for noncoordinate basis. Possibilities: a) a normalized basis(yes of course i know its only tangent vectors that means...

Background:(you might not be interested so you can skip if you want) I am trying to learn general relativity using the Book Gravitation by Misner, Thorn and Wheeler. The book for the most part seems easy for me to understand but once in a while words i neither heared nor can find the meaning of...