Recent content by George444fg

I am trying to calculate the partition function of the system of two completely decoupled systems. Probability-wise, the decoupled nature means that the PDF is the product of the PDF of each subsystem. I just wanted to be sure that it would translate into: $$ H = \sum_{k_i...

So to write down in the conventional form we have: \begin{equation} A^{\mu} = (f(t+y), f(t+y), 0, 0) = (\Phi, A) \end{equation}

Its my bad, I meant that my original Gauge was in the form: \begin{equation} \vec{A} = \begin{pmatrix} g(t+x)\\ 0\\ 0\\ g(t+x)\\ \end{pmatrix} = (\Phi, A) \end{equation} such that \begin{equation} \nabla \cdot A = g'(t+x) \Longrightarrow \Box \chi = g'(t+x) \end{equation} Now...

I am given an initial vector potential let's say: \begin{equation} \vec{A} = \begin{pmatrix} g(t,x)\\ 0\\ 0\\ g(t,x)\\ \end{pmatrix} \end{equation} And I would like to know how it will transform under the Lorenz Gauge transformation. I know that the Lorenz Gauge satisfy...

I have a cubic lattice, and I am trying to find the partition function and the expected value of the dipole moment. I represent the dipole moment as a unit vector pointing to one the 8 corners of the system. I know nothing about the average dipole moment , but I do know that the mean-field...

I have been working on a relatively simple problem. Just take a quantum wave function for which a physical requirement is that an arbitrary displacement of x or an arbitrary shift of t should not alter the character of the wave, and I want to find the state function solution. A possible guess...

I know that at the boundary the temperature is 10 celcius. (Btw the comments you made are true). So I could make the assumption that : the whole system is gaining energy. In other words, the system tends to attract the heat of its vicinity to compensate a lack of energy. I am I right?

So let's be clear. I mean, I have two concentric cylinders that are separated from an insulating material. I have a heat source within the internal cylinder and heat sink outside the internal cylinder. When I calculate the power of the internal cylinder, the power is positive, while when I...

I have a cylinder that is separated with an insulator. In the internal cylinder there is a thermal source, while outside the insulator we have a thermal sink. The power of the internal cylinder is positive, while of the external one in total is negative. How I should interpet the results. Like...

I mean it is the equation j_q=-k(r)\nabla \cdot T. I use the heat equation. The point being that no matter the values kappa gets the heat flux is always the same

I am doing a project, actually it is a simulation. And we aim to determine the spatial and heat flux evolution of the system. The system consists of two concentric cylinders separated by an insulating material. I change the value of kappa of the insulator but the heat flux remains always the...

It is the classic oscillator. But nonetheless, it can be derived from the quantum oscillator.

Hellow. I am doing an introductory to Quantum Mechanics course, and the irreducible solution appeared in the harmonic oscillator. When we talk about the irreducible solution, this is the solution as a linear combination of the eigenbasis of the system. This is understandable, however, if I have...

Hey, I would like to do an exchange year at Imperial. I would like to follow as a physicist the Functional Analysis course. However, I have not heard the best things about this peculiar course. What is the audience opinion on that?

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