Recent content by phywithAK

@PeroK I was busy with other subjects so replied late 😅. I did try proving yesterday the invariance under lorentz transformation in this way, now that it's invariant i want to know the current due to lorentz symmetry but i don't know how to proceed for that. Is calculation till here sufficient...

Yes @PeroK ,I tried writing my equations for each of the four components and thus obtaining 4 E-L equations. But what about the symmetries of this lagrangian, i tried showing it's invariance for space-time symmetries but i am still stuck on how to properly proceed for that. Any direction towards...

About the latex: I realized that a few moments ago so i updated it. I also updated about the equation of motion which i found as a first step to this problem, so kindly give a look into that too. Also by beginner i meant i have just started a course in QFT and since than we have been...

until now i have only been able to derive the equations of motion for this lagrangian when the field $$\phi$$ in the Euler-Lagrange equation is the covariant field $$A_{\nu}$$, which came out to be : $$-M^2A^{\nu} = \partial^{\mu}\partial_{\mu}A^{\nu}$$ I have seen examples based on the...

I am struggling over a problem and i could really use some help in this. So it's about finding phase shifts in a localized sphere of coulomb and harmonic potential. I tried solving the radial Schrödinger equation for both of them by using power series method, but still i am having problem...

Thanks drvrm for this interesting link, so because of the electrons behaving as massless particles they no longer follow the classical physics energy equation E=P2/2M , and tend to follow relativistic mechanics. So that would mean they would not also follow Schrödinger's equation also.

Recently, in my quantum physics classes i was introduced to the concept of tunneling of particle through a barrier potential and about transmission probability. Our instructor mentioned about something known as "Klein tunneling". Can somebody explain to me what is Klein tunneling and why...

Thanks Demystifier for this link, it was really something needed to get a little more interest in learning quantum mechanics. I too am studying quantum physics 101 here and something like this is what I wanted. Please keep sharing such interesting links.