user avatar
user avatar
user avatar
moshtaba
  • Member for 6 years, 2 months
  • Last seen more than a month ago
22 votes
6 answers
2k views

Why do we use potential for quantizing the electromagnetic field?

10 votes
3 answers
2k views

Definition of the stress-energy tensor

8 votes
1 answer
1k views

Really why does promoting numerical variables to operators neatly work?

6 votes
2 answers
248 views

Why do we learn only two computations, cross sections and decay rates, in such a fundamental theory as QFT?

4 votes
1 answer
78 views

Is flow of 4-momentum (across a 1-form) parallel to 4-momentum itself?

3 votes
1 answer
408 views

Can the Biot-Savart law be derived from QED?

3 votes
5 answers
217 views

What is the deep difference Between a hole in Dirac sea and an empty orbit around nucleus?

3 votes
0 answers
55 views

Conservation of $\int |\psi|^2$ for Dirac wave

2 votes
1 answer
72 views

Quantum fields in position space. Could it be considered as one simple harmonic oscillator at every point of space?

2 votes
2 answers
339 views

Relationship between vector field, generator & scalar field in Noether's theorem

2 votes
3 answers
164 views

Physical meaning of Heisenberg's picture

2 votes
5 answers
112 views

Example of curved spacetime with flat space layers

2 votes
2 answers
677 views

Proof of rayleigh-jeans formula

2 votes
3 answers
208 views

Is there any exact law in physics? [closed]

1 vote
1 answer
90 views

Why are quantized fields somehow unique?

1 vote
0 answers
234 views

kinetic energy in photoelectric effect

1 vote
0 answers
104 views

Rigorous derivation of "reflection of light from mirror" from QFT

1 vote
0 answers
60 views

Simple reasoning for de Broglie relations

1 vote
1 answer
124 views

why pressures in opposite directions don't cancel out effects of each other in stress-energy tensor?

1 vote
1 answer
1k views

Definition of the S-matrix

1 vote
1 answer
56 views

How did the Big Bang cause the cosmos to be infinitely large? [duplicate]

1 vote
1 answer
47 views

Why "in" and "out" states $\Psi^\mp_\alpha$ are eigenstates of total Hamiltonian $H$?

1 vote
1 answer
57 views

Charge vs Mass in QFT: Photons vs Higgs-graviton "pair"

1 vote
2 answers
72 views

Acceptable parametrizations of curved spacetime

0 votes
1 answer
75 views

Example of a Riemannian metric in $(1+1)$D by oscillating geodesics

0 votes
4 answers
2k views

Why does rubber shrink when it is heated?

0 votes
2 answers
69 views

Physical manifold with a natural linear connection on them

0 votes
1 answer
25 views

Deducing increase of mass of moving particle from modified second law

0 votes
0 answers
89 views

A theory for calculating mass and charge of electron

0 votes
1 answer
36 views

Scattering. could a particle by an almost specific momentum hit a microscopic target?