Question:
Draw the lowest-order Feynman diagrams for the e+e- --> W+W-process
The answer gives three diagrams. I understand the first two, but the third makes no sense to me. Here it is:
So this is a t-channel Feynman diagram. As far as I can tell regarding how these types of Feynman diagrams...
In statistical physics the calculation to obtain the density of states function seems to involve an integral over an eighth of a sphere in k-space. But why do we bother moving from n-space to k-space, if there's a linear relation between n and k i.e. n = (L/π)k ? Why don't we just integrate over...
Hi all, I'm working through a derivation of the general relationship between Cp and Cv and there's one point which is confusing me.
I understand that
and
and that this implies the following:
but isn't this equal to 0? Shouldn't the two partial derivatives on the right...
Where I study, one can choose the theoretical stream, in which case there is no senior lab at all. I've already taken experimental classes this past year.
My question was whether it would be harmful to my future were I to take this route.
I'm a student of physics at the University of Edinburgh in the UK. I'm going into my third year of a four year bachelors course. I now need to decide whether to continue with an ordinary physics degree or whether to choose the theoretical stream, which involves replacing all remaining...
Guys, thanks for all the replies, they've been a great help. I'll write a more detailed response later, but I wanted to let all of you know that I appreciate the advice that you've all taken the time to give me.
I'm studying physics in Edinburgh, UK, and I'm on my second year of four. I used to be passionately excited about studying physics at degree level but so far I've found it to be mostly uninspiring and often tedious. As stated in my title, I want to ask how usual it is to feel this way early on...
I'm a UK physics student studying for a Bachelors in Science. I'm thinking about my options post graduation and various engineering roles sound quite appealing. I know the general advice is to study engineering at undergraduate level if that's the sector one intends to work in, but I'm in my...
I spoke to my personal tutor recently about a similar thing and was advised against this approach. Better, he told me, was to research the specialism of a particular member of staff before getting in touch, as that way you'll be much better able to convey your interest in they're particular area...
Hi all, I'm a 1st year physics student in the UK and I'd like to ask if anyone could point me to where I can learn about the in-depth science of global warming/climate change. I don't like having to appeal to authority (even when the authority is legitimate) during debates on global warming and...
Hi all, I'd just like to clear up something that's often confused me.
In classes (particularly classical waves/QM) we've often seen the lecturer switch from describing a wave as (most commonly) Acos(kx-{\omega}t) to e^{i(kx-{\omega}t)}
but doesn't the exponential representation include an...
Thanks loads guys, this is all really helpful.
My story isn't that unique but I'll relay it anyway: I'm fascinated by the world of theoretical and mathematical physics and feel drawn to it in a way I haven't ever felt with anything else. This first started with Muchiu Kaku's "Physics of the...
What prompts me to make this claim is just about everything I've read on this forum about the life of someone continuing in this field after their PhD. But you're right, I should have phrased it as the path to being a profesional scientist, rather than actually being a professional scientist...