Recent content by idmena

Hi all I'm not really sure where to post this. I just wanted to ask what software do you use, or would you recommend, for making a physics poster for an academic conference (physics)? I'd go with PowerPoint + latex plug-in because I've used that a ton before, but maybe there are better ways to...

Hi, thank you for your quick reply. You are right, I should've written the summation explicitly, I now realize I was making mistakes due to being confused by my own notation. Sorry about that, since I am always taking the trace of the invariants, the identity I mean to write was...

Hi all I am trying to reproduce some results from a paper, but I'm not sure how to proceed. I have the following: ##\phi## is a complex matrix and can be decomposed into real and imaginary parts: $$\phi=\frac{\phi_R +i\phi_I}{\sqrt{2}}$$ so that $$\phi^\dagger\phi=\frac{\phi_R^2 +\phi_I^2}{2}$$...

Nevermind, I found a very complete and nice review with the information I needed: http://dx.doi.org/10.1016/S0370-1573(02)00219-3 In case anyone needs it Regards

Hi all! For a talk I want to compare the values of the critical exponents found by Wilson and Fisher in their \epsilon = 1 paper (10.1103/PhysRevLett.28.240), with the experimental values measured up-to-date. Can anyone provide a source for these measured values (\gamma, \nu, \eta)? Thanks...

Of course, it's evident! Thank you for your prompt answer.

Hello, I have a question regarding "polynomials" that have terms with interger and fractional powers. Homework Statement I want to solve: $$ x+a(x^2-b)^{1/2}+c=0$$ Homework Equations The Attempt at a Solution My approach is to make a change of variable x=f(y) to get a true polynomial (integer...

Adding the contributions from the diagrams shown, I get what is shown in the first line of the last pic: The counter term in my lagrangean should look like: (propagator) * (something) So, at this point I would like to have something like: Alas, I cannot do this because there is a 1/6 S...

Hello all, I hope you can give me a hand with a QFT homework I'm working on. We are to compute the beta equation of a Non-abelian SU(N) theory with: Complex scalars (massless), bosons, ghosts. My question is referring to the Boson self-energy scalar loop correction. 1. Homework Statement We...

Thank you, I will take a look at it!

Hello all I hope you can help me with this query. I would like to find an introductory text in extra dimensions. I am taking a course in BSM and I have been referred to: C. Csaki, TASI lectures on extra dimensions and branes, hep-ph/0404096, but I was hoping to find something more...

Hi! I need some help understanding something related to sound. I am currently studying a book called Sound Propagation. An Impedance Based Approach, by Yang-Hann Kim. There is a part where he talks about reflection and transmission of acoustic waves on a flat surface of discontinuity. He gets...

Hi I was hoping you could help me a little bit regarding the layer-by-layer deposition process. I have not been able to find a book in my campus library that talks about this particular process, nor have found any "how to" online (must likely haven't searched in the right places), so I come...

Hi, I'm reproducing a measurement of vibrations and I would like your help with a certain question I have. I have a rectangular plate supported by two rods and I want to measure it's fundamental flexural vibration frecuency, among other things. As a base I have a report of such a measurement...