Recent content by pantheid

In other words, if we are told that A and B commute, then does that mean that there exists some other operator X such that A and B can both be written as power series of X? My instinct is yes but I haven't been able to prove it.

I have a bachelors degree in physics and I want to receive an MS before I move on to a PhD. I don't think I' ready to commit the time and effort to a Doctorate, but I do want to live abroad and study physics for a Masters. I would like to do it outside the US, but I would settle for a domestic...

Homework Statement The given problem is that we have a rocket ship, accelerating at a constant rate of 1g (in its own instantaneous inertial rest frame) for 40 years. We must find the distance it travels in that time, as measured by an observer on earth. Homework Equations dx'=gamma*(dx-vdt)...

Hi, I will be graduating soon and its time to start thinking about what I want to do with my life. I will have a bachelors degree in "math & physics" and a masters degree in physics by June 2016. I've been considering, more and more strongly, to go to the developing world (Africa or the Middle...

People jog, thereby expending energy, and lose weight because of it. As modern people who understand mass energy equivalence, we know (or can presume) that during the process of running, the body derives its kinetic energy by breaking down ATP in the cells. When this breakdown occurs, the total...

Am from the US, will be studying in the US.

Hey guys, I found summer work with a post-doc in my University. I will be working with him on a side project that he's had an interest in for some time, but could only start it this coming summer because of lack of time. However, because he's only a post-doc (and I only got the position by...

I have been reading a lot about Differential Forms lately because its so sexy. I have a pretty good grasp of how wedge product, hodge star, and differential operator "d" work, and their application to physics (it took me some time to see how d*F=J). I want to continue reading about it because...

Here's my problem. We know the magnetic force is just F=q(v x B). If we have a stationary charged particle in a magnetic field, it will not feel a force. If we change to a moving frame, the particle now has a velocity, but the idea that it feels a force by changing frames is ridiculous so...

Hi everyone, a few weeks ago I applied to an REU (late, I know, but they were still accepting applications). I sent in the online application, but never received an email of confirmation of receipt, so I contacted the PI to ask him if they got it. This was on friday of last week. On Sunday he...

I like the way you think, but I also just wanted to see if you guys ever use integral equations in your work.

Unfortunately, no. The only description is that the course content varies.

Hi all, my university is offering a graduate level math course in integral equations for the following semester. I'm not at all familiar with them (I'm assuming they're the opposite of differential equations?), and I'm wondering if you guys think they are at all useful in the field of physics...

I intend to take an extra semester here to earn my masters in physics through an accelerated program. This means that next summer, I will again be eligible to apply to a bunch of REUs/internships. Besides improving my grades (I've already decided that I'm getting all As from now on :p), is there...

Thanks for the responses. I was just wondering why it was that I was the only person in my department that wasn't accepted into an REU program (2 got into SULI and 2 got into E3S at Berkeley). I was wondering what they could have done differently from me when my gpa and research experience were...