Technically Natural's user avatar
Technically Natural's user avatar
Technically Natural's user avatar
Technically Natural
  • Member for 3 years, 10 months
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92 votes

Hypothetically, why can't we wrap copper wires around car axles and turn them into electromagnets to help charge the batteries?

28 votes

How do I interpret uncertainty in velocity greater than the speed of light?

11 votes

Does perfect knowledge of momentum of a free particle imply that there is a finite probability of finding free particle anywhere in the universe?

8 votes

How $[x,p]=i \hbar$ implies that $x$ and $p$ do not have simultaneous eigenstates?

8 votes
Accepted

Lagrangian potential for Newtonian gravity

8 votes
Accepted

Thought experiment with particle in a 1d potential well

7 votes
Accepted

LSZ reduction formula (Schwartz)

7 votes

Why does a body accelerate when there is a force applied to it?

6 votes

Is there a classical quantum mechanics?

6 votes
Accepted

What is the relationship between lattice field theory and grid-based numerical methods?

5 votes

What does $V(r)$ mean in the Schrodinger equation?

5 votes

An integral in Peskin & Schroeder's Quantum Field Theory p. 27

4 votes

Three integrals in Peskin's Textbook

4 votes

Why do the counterterms in renormalized $\phi^4$-theory with power two in fields give vertices and not propagators?

4 votes

What makes the electron, as an excitation in a field, discrete?

4 votes
Accepted

Understanding Quantum Spin as a Vector And Spin Operators

4 votes
Accepted

Does $L\cdot S$ commute with $J^2$?

4 votes
Accepted

Infinitesimal generator of change of basis (Fock Space)

4 votes

Why is curved space able to change an object's velocity (vector)?

4 votes

What is the source of light in Cherenkov radiation?

4 votes
Accepted

What happens if we suddenly change the potential in Schrodinger equation?

4 votes

$S$-matrix from LSZ

3 votes

Why are only positive frequency mode functions allowed in Quantum field theory? How is this consistent with anti particles having negative energy?

3 votes
Accepted

Magnet Field and Electric field representation image misunderstanding

3 votes
Accepted

Lorentz group generators and its dimensionality

3 votes
Accepted

Why does the time translation operator have a different sign than the time evolution operator?

3 votes

Weyl Ordering Rule

3 votes

Does relativistic quantum mechanics (RQM) really violate causality?

3 votes
Accepted

Why is it necessary to wrap our contour around the branch cut at $+ im$ in the spacelike Klein-Gordon propagator? (P&S)

3 votes

If a photon takes all possible paths, does it travel faster than light?