Physics Questions, Problems & Solutions : TransWikia.com ~ Page 330

Problems with common mode expansion for 2D plane CFT for non integer weight?

Equation (6.7) in the big yellow book (Di Francesco, Mathieu, Senechal) says we can write the field of a 2D CFT with weight $(h, bar h)...

Asked on 05/17/2021

1 answer

Is the definition of Work done by Torque a general result?

I was going through this post. In the post the person who asked the question mentioned a statement:"Lastly, I am emphasizing that I'm am NOT saying that torque is...

Asked on 05/17/2021

1 answer

Why is heat not measured in $rm kg,K$?

I'm trying to understand thermodynamics. The way I think about total heat energy is by multiplying the temperature by the mass. So 100 kg of matter at a temperature of...

Asked on 05/17/2021

3 answer

How to find the Hamiltonian from the energy-momentum tensor for a free electromagnetic field?

This question is related to a previous question that I have asked before titled: Energy-Momentum Tensor for the Electromagnetic Feild asking why the energy-momentum tensor had the following...

Asked on 05/17/2021

1 answer

How to formulate the magnetic dipol moment and field in a line geometry instead of a point

In classical physics, the magnetic field of a dipole is calculated as the limit of a current loop as the source shrinks to a point while keeping the magnetic moment...

Asked on 05/17/2021

0 answer

Software for mean field calculations with fermions on a lattice

I know there is lots of software for practical calculations with DFT method, but I am more interested in toy models here. Is there any software for calculating mean-field phase...

Asked on 05/17/2021 by Pavlo. B.

0 answer

Strange pattern on fast spinning CD

In the following youtube video and timestamp:http://www.youtube.com/watch?v=zs7x1Hu29Wc&t=6m51s one can see a cd spinning very quickly, in slow motion, just before it breaks. I'm not sure I...

Asked on 05/17/2021

0 answer

Gravitational light bending

I'm trying to follow the next proof referred to the bending of light in a gravitational field (calculated using exclusively the Einstein's equivalence principle). Suppose you have an observer in...

Asked on 05/17/2021 by Jorge Casajus

0 answer

Evolution of the virial ratio $-K/U$ in $N$-body simulation

I have run an 2D $N$-body sim to simulate the cold collapse of a galaxy. Initial conditions: $N=500$, all velocities=0, positions generated randomly within a circle of radius...

Asked on 05/17/2021

2 answer

How to define the components of the Poincare group?

I know that the Poincare group/inhomogeneous Lorentz group can be defined as: $$x^mu = (t,-x)t rightarrow t^prime = gamma x + delta t + b^0x rightarrow...

Asked on 05/17/2021 by A. Map

1 answer

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