Believe or not, your answer in the past thread answered almost all my questions. You are a life saver!
I just have two more.
1) So I am trying to imagine all this using Manifolds, maps and etc.
I understand how to imagine a passive (coordinate) transformation which would be simply a map...
Hello,
I know question surrounding this topic have been asked again before, however the more I search for the answer of my question, the more confused I become since each book, paper and thread uses its own formulation.
I am trying to figure out what is a conformal transformation and as a...
Hello everyone,
I am currently finishing my Masters in Theoretical Physics and looking forward to continue in a PhD.
I always thought I would love String Theory, and now that i am actually doing it I see that my feeling was correct. I do not know why but trying to understand its concepts...
My options regard universities from the EU and Canada. however, Imperial is one of my best option according to QS and Shangai Rankings along with some others. I understand that whatever option hides a risk.
keeping that in mind, I tend to accept the offer.
The reason why, I posted this...
Hello,
I have been accepted at Imperial's postgraduate course "Quantum FIelds and Fundamental Forces" full time and have received an offer.
This means that I have 20 days to decide If I will attend the course or not.
Has anyone graduated from this course and is willing to share his...
Homework Statement
from the lagrangian density of the form : $$L= -\frac{1}{2} (\partial_m b^m)^2 - \frac{M^2}{2}b^m b_m$$
derive the equation of motion. Then show that the field $$F=\partial_m b^m $$ justify the Klein_Gordon eq.of motion.
Homework Equations
bm is real.
The Attempt at a...
I did not lower any indices. And yes it is not covariant at all so it could not be a lagrangian. It was something a digged up on the internet while I was working at the solution of my problem. However, I did not notice while posting the thread that it was not covariant.
Now, Let's focus on the...
Homework Statement
Hello, I am trying to find the equations of motion that come from the fermi lagrangian density of the covariant formalism of Electeomagnetism.Homework Equations
The form of the L. density is:
$$L=-\frac{1}{2} (\partial_n A_m)(\partial^n A^m) - \frac{1}{c} J_m A^m$$
where J...
Hello
I just got my undergraduate degree in physics from the unviersity of Athens with a very good mark ( not the best but surely i am considered to be a top 20 at least for my class).
I am searching for a good master's(or doc if allegible) program in europe on the topic of theoretical (high...
Hi
I am graduating next year from the Univeristy of Athens Greece as a physicist so a moment has come where I have to make a big decision.
I have already chosen the path of Theoretical High energy physics and I am currently working on my thesis which focuses on Q.E.D.
My first ambition...
Hi
I am an undergraduate student of physics in the university of Athens. I am reaching my final year of studying and we are asked to select and work with one of our professors so that we can make a (barchelors) thesis about a specific specialization. I have know for a long time that I want to...
Hi...!
I was trying to understand the meaning of the binary Energy (Eb) ..
For example :
Imagine we have two cores ... 1 from an X atom and 1 from an Y atom which have the same A and X has bigger Eb than Y ... while Y is the stable core for that exact A ...
That means
Because energy is...
Understood and thank you ...
Actually i am taking physics courses via the internet and one of the lessons i am attending is called " introduction to relativity , nuclear physics and cosmology" so i believe i will have no problems ..