Recent content by Grieverheart

It's just a character thing, I've always been like that so I don't blame anything else.

Hey trueo, thanks for your opinion. You definitely mention some of the things I'm afraid of, if I commit to an academic life. Khashishi, it's not really about the PhD, it's more a question of committing to academia. As a theoretical physicist, getting a job as a researcher in some company is...

Hi everyone, I'm finally finishing my Master's in theoretical physics. These past two years reminded me of how easily I become excited and lose interest. My thesis is on computer simulations which also helped further develop my programming skills (I do love programming). As super exciting as...

Homework Statement Ok, it seems I need to refresh my linear algebra a bit. In the string theory exams, we had a part about space-time supersymmetry of the superparticle. On of the questions was this: Argue that the matrix \Gamma^{\mu}p_{\mu} can have at most half maximal rank upon imposing...

You seem to have a similar problem with this. Although I can't say for sure without the code.

I don't see v_u declared (or my idea?). Also I see you declare P with a size of 2000 and in the subroutine it has a size 1000.

When I run in too a similar bug in my code for the first time, it took me hours to find out what the problem was. As hurkyl pointed out, such errors are caused when you assign values to an array beyond the allocated memory. Now, I'm not familiar with fortran, but it doesn't seem the case that...

I have done OOP in Java although that was quite some time ago. I was going to learn python at first, it seems to fit for most of my needs but it seems really slow. I read it can get close to C, C++ speeds with NumPy/SciPy (which are actually using C). That doesn't feel quite right :S . I guess...

I'm in my first year of theoretical physics master and I'm considering of following the path of scientific simulations. At the moment I use C for my simulations. I would additionally like to learn an object oriented language. I followed a course in Java about 2 years ago, so that would be easier...

Yes, sorry for posting on the wrong forum and thanks for pointing that out. I guess I'll wait for the thread to get delete or moved then :S .

Yes, my thought is that maybe matter is not what curves space-time (i.e. it is not matter that attracts matter) but a curvature already existed in place beforehand.

Yes but a cosmological constant in a sense gives a global curvature not a local one.

Could it be possible that space-time curvature is not caused by matter but is an inherent characteristic of space-time? Wouldn't this explain dark matter?

Thanks for the replies. It is true that when I check the books, I begin remembering stuff quite quickly. It's sad it works like this for other things too, like sports, playing a music instrument or drawing. I guess my frustration mostly comes from the fact that concentrating on something makes...

The past June I got my physics degree and because I was working on an important research project on graphenes and had some unexpected results, I wasn't sure If I would finish it on time. Thus, I made my applications for master in the summer and got accepted in Utrecht university for the...