Arturo don Juan's user avatar
Arturo don Juan's user avatar
Arturo don Juan's user avatar
Arturo don Juan
  • Member for 9 years, 5 months
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16 votes

Is there a cutoff for Newtonian gravity?

6 votes
Accepted

What are the criteria for a system to follow quantum mechanics instead of classical mechanics?

5 votes
Accepted

Planck's law question

5 votes
Accepted

Feynman diagrams, can't Wick-rotate due to poles in first and third $p_0$ quadrants?

4 votes
Accepted

A doubt in a Wikipedia article discussing Bertrand's theorem

4 votes

Is there any physical situation where the electric potential is discontinuous?

4 votes
Accepted

Value of the total spin quantum number $s$ in a system of two spin-$1/2$ particles

4 votes

What is polarisation, spin, helicity, chirality and parity?

4 votes

How do we Know Something is a Cross Product?

4 votes
Accepted

Is my book's answer on a cons. of momentum question incorrect?

3 votes
Accepted

Is there a list of hydrogenic transition matrix elements online?

3 votes
Accepted

Rate at which planet "sweeps out area"

3 votes

Is the Momentum Operator a Postulate?

3 votes

Why can't electric potential be negative?

3 votes

Google interview riddle and scaling arguments

3 votes
Accepted

Angular distribution of dipole moments?

3 votes
Accepted

Why external chemical potential?

3 votes

Feynman Propagator for fermionic field $S_F(x-x)=0$

3 votes

Field lines of two bar magnets becoming one bar magnet

3 votes
Accepted

What are virtual bound states or virtual levels of a finite square well?

3 votes
Accepted

Does dark matter exist or not?

3 votes

How can one generally prevent silly mistakes in very long physics calculations?

3 votes

How does the physics of the rotation behaviour of the Roti can be explained?

3 votes

How can an operator be proportional to a scalar?

3 votes

Continuous motion is a myth and the speed of light is a convention

3 votes

Product of delta distributions

2 votes

How to assign a value to an observable when the statevector is not an eigenvector of the operator?

2 votes

Derivation in LSZ Reduction Formula

2 votes

What is the real world interpretation of $E = mc^2$?

2 votes
Accepted

Why are the poles of the propagator the masses of bound states and not the masses of unbound states as well?