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Ian
  • Member for 7 years, 4 months
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33 votes

How would the laws of nature behave if we reversed time?

5 votes
Accepted

How does the masless pulley gets the force from rope?

4 votes
Accepted

Monatomic gas work

4 votes
Accepted

Quantum states after real world measurements

4 votes

Retarded Green's function is the same as time-ordered Green's function at zero temperature for $\omega>0$

3 votes

Why work definition involves displacement?

3 votes

Are there any naturally occurring examples of photons without mass?

2 votes

Fractional quantum Hall effect

2 votes
Accepted

Equation of Motion for Rigid Body Motion

2 votes
Accepted

De Broglie wavelength Vs Wavefunction

2 votes

Does the wiring of a coil change magnetic field direction?

2 votes

What happens to inertia of a free-falling object once one point is anchored?

2 votes

Can ionic bonds only have discrete distances?

1 vote

Is wave motion the combined motion of the disturbance and the medium?

1 vote

Does reduced density matrix in a bipartite system evolve unitarily such that $\rho(t) = U(t)\rho_0U^{*}(t)$?

1 vote

If a black colored body absorbs all colors, why does the spectrum of light appear on a black shoe?

1 vote

How to measure the wave-function experimentally?

1 vote
Accepted

Lorentz Transformations in Index Notation

1 vote

Change of pictures in QM (Schrödinger, Heisenberg, Interaction etc) <=> Change of Basis

1 vote

In a ferromagnet, parallel spins are energetically favored. However, antiparallel magnets are usually energetically favored. Why?

1 vote

Is kinetic theory part of statistical mechanics?

1 vote
Accepted

Why Fermi level doesn't change with temperature?

1 vote

What is the algebraic form of the momentum eigenstate?

1 vote

Why isn't jumping against a wall an elastic collision?

1 vote
Accepted

Two masses attached to a fixed vertical spring

0 votes
Accepted

Software to calculate electron binding energy of molecules?

0 votes

Conservation of momentum and mechanical energy in different reference frames

0 votes

Energy conservation without action principle?

0 votes

How is energy conserved in this scenario?

0 votes

Where can I find a detailed derivation of the form of two-body operators in the second quantization?