Recent content by befj0001

I know that water is the most dense at 4 degrees celsius. That's why water at the bottom of a sea has that temperature. But how did it get that temperatur in the first place and why does the energy not distribute itself in such a way that the temperature is the same through? Is it the particles...

ok, fine, but they will still be entangled once you stop making a measurment right?

Is it possible for an entangled system of particles to be disentangled at a distance, without making them interact directly with each other?

Entropy is basically a measure of the number of avaible microstates a system can have, given a certain energy of the system. It is a measure of the uncertainty of the exact state of the system. Now, suppose we have a box with a single particle inside and with the only internal energy being the...

ok, so the ## M_{\rho\sigma} ## represents a matrix and not an element of the matrix? i.e., ## M_{10} ## is a matrix? But where is the time parameter in the first expression?

I don't understand why we can write the elements of the lorentransformation in the form ## {\Lambda}^{\mu}\:_{\nu} = [exp(-\frac{i}{2}{\omega}^{\rho\sigma}M_{\rho\sigma})]^{\mu}\:_{\nu} ## I know that we can write it in the form ## {\Lambda} = exp(t\Theta) ## where ## \Theta ## are elements...

i.e., why is the lagranian in my first post not covariant?

I think the relativistivictic limit should be the expression above, but only what is inside the parenteses, still with the minus sign there. That is the classical expression for the lagrangian.

Why does the following Lagrangian not have the correct non-relativistic limit? It is correct except for the derivative of proper time with respect time. But that factor goes to 1 so why is the expression wrong? ## L = -(\frac{1}{2}mu^{\mu}u_{\mu} + qu^{\mu}A_{\mu})\frac{d\tau}{dt} ##

http://www.megafileupload.com/en/file/605297/HA5-2014-pdf.html maybe this link works.

http://www.filedropper.com/ha5-2014 Anyone have any idea of how to solve part b) of this problem. I don't know how to start.

No need anymore, I already solved it.

Hi, I'm completely stuck with problem 3a). I have no idea of how to start. Anyone have any clue?http://speedy.sh/9JkCf/handin1-4.pdf

Why can't you read the file? file:///C:/Users/administrator/Downloads/handin1%20(2).pdf

on part 3b) is it correct to argue that since you integrate away the x-dependence in the number operator that according to the Heisenberg equation [H,N]=0 since both the partial derivative and total derivative of N is zero?