User J C

29 votes

2 answers

3k views

Can the center of charge and center of mass of an electron differ in quantum mechanics?

asked Sep 18, 2018 at 5:11

15 votes

3 answers

2k views

Hydrogen atom, what's the wave equation for the atom's nucleus?

quantum-mechanics wavefunction inertial-frames hydrogen

asked Apr 24, 2018 at 18:55

3 votes

3 answers

245 views

Why could angular momentum and spin add together? (Mathematical Proofs)

quantum-mechanics angular-momentum hilbert-space quantum-spin

asked May 1, 2018 at 13:00

3 votes

2 answers

381 views

In Maxwell equations, why time derivatives only appear together with Curl?

electromagnetism special-relativity classical-electrodynamics maxwell-equations lorentz-symmetry

asked May 11, 2018 at 16:09

2 votes

1 answer

102 views

Distinguish Definitions: Realism Scientific, Realism, and realistic

quantum-mechanics determinism bells-inequality locality epr-experiment

asked Apr 29, 2018 at 20:41

2 votes

2 answers

676 views

What's the difference between rotational Energy/angular momentum and linear kinetic energy/linear momentum?

classical-mechanics angular-momentum momentum

asked Jul 30, 2018 at 8:36

1 vote

2 answers

943 views

$dQ=Tds$ and quasistatic process

thermodynamics statistical-mechanics entropy reversibility

asked Sep 25, 2018 at 4:17

1 vote

1 answer

69 views

In ideal gas $\partial_V(PdV)_T=P$

homework-and-exercises thermodynamics ideal-gas

asked Sep 25, 2018 at 6:28

1 vote

1 answer

213 views

Partial deritative of $\partial_V(PV)_T$ with $PV=nRT$

thermodynamics mathematical-physics mathematics

asked Sep 26, 2018 at 18:53

1 vote

2 answers

330 views

Does entangled states must become non entangled states after the measurement?

quantum-mechanics operators quantum-entanglement tensor-calculus wavefunction-collapse

asked Sep 26, 2018 at 21:00

1 vote

1 answer

182 views

$\langle xp+px\rangle|_{t=0}=2\langle p\rangle\langle x\rangle|_{t=0}$ for the free particle?

quantum-mechanics homework-and-exercises mathematical-physics symmetry

asked Sep 28, 2018 at 2:16

1 vote

0 answers

89 views

Mathematical proof that Fermions are half-integer spin particles, and half-integer spin particles are Fermions [duplicate]

quantum-mechanics quantum-spin fermions spin-statistics

asked May 10, 2018 at 21:37

1 vote

0 answers

120 views

How to experimentally construct an imaginary(complex) potential, and what does it mean?

quantum-mechanics experimental-physics mathematical-physics

asked May 18, 2018 at 3:18

1 vote

0 answers

96 views

Copenhagen interpretation and argument of boundary condition [duplicate]

quantum-mechanics wavefunction schroedinger-equation boundary-conditions

asked Mar 21, 2018 at 19:32

1 vote

2 answers

105 views

The invariance of BEC and curved space

general-relativity fluid-dynamics curvature gauge-invariance bose-einstein-condensate

asked Mar 26, 2018 at 8:25

1 vote

0 answers

121 views

Particle in a box, what's the most likely states for particle to jump to?(by calculation)

quantum-mechanics homework-and-exercises energy wavefunction

asked Mar 11, 2018 at 4:15

1 vote

1 answer

380 views

Momentum space in real computation

quantum-mechanics momentum computational-physics fourier-transform time-evolution

asked Apr 7, 2018 at 18:26

1 vote

1 answer

268 views

Clebsch–Gordan coefficients mathematical proof for bigger $\Delta m$ make the sign between vertical jump

quantum-mechanics quantum-spin

asked Apr 13, 2018 at 1:49

1 vote

0 answers

201 views

What was the implication of Quaternions in modern (21th) physics and usage in electrodynamics in 19th century? [closed]

electromagnetism special-relativity history complex-numbers

asked Apr 15, 2018 at 2:16

1 vote

1 answer

2k views

Symmetry of Hamiltonian in harmonic oscillator

quantum-mechanics symmetry harmonic-oscillator hamiltonian-formalism fourier-transform

asked Apr 19, 2018 at 20:23

1 vote

1 answer

385 views

reading the bubble chamber image

particle-physics experimental-physics charge pair-production

asked Jul 16, 2018 at 6:17

1 vote

1 answer

118 views

Prove Spin of a massless particle $S_z=\pm1$

special-relativity particle-physics representation-theory helicity

asked Jul 24, 2018 at 4:23

1 vote

1 answer

103 views

States created by translation operator

quantum-mechanics operators vectors commutator

asked Sep 14, 2018 at 20:25

1 vote

0 answers

40 views

Why energy plays such an important role among other conservative quantities

energy-conservation

asked Nov 3, 2018 at 5:10

0 votes

1 answer

56 views

Energy $E_n$ for eigenstates $n$ and position probabilistic distribution

quantum-mechanics heisenberg-uncertainty-principle commutator

asked Jul 25, 2018 at 21:51

0 votes

1 answer

60 views

Question about creating a High energy gap

quantum-mechanics energy potential schroedinger-equation

asked Mar 15, 2018 at 18:33

0 votes

2 answers

756 views

Particle in a box momentum and position, expectation and uncertainty in stationary states

quantum-mechanics heisenberg-uncertainty-principle

asked Mar 20, 2018 at 7:21

0 votes

1 answer

308 views

Substitute Schrödinger Equation by complex analysis, was the substitution correct?

quantum-mechanics wavefunction schroedinger-equation complex-numbers

asked Apr 2, 2018 at 0:34

0 votes

1 answer

89 views

Step potential well solve the other kind of given boundary condition

quantum-mechanics wavefunction conservation-laws schroedinger-equation boundary-conditions

asked Apr 2, 2018 at 2:46

0 votes

1 answer

77 views

Calculate Tensor and its transformations, transformation of derivatives of dependent variables

metric-tensor tensor-calculus differentiation

asked Mar 28, 2018 at 0:05

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42 Questions

Can the center of charge and center of mass of an electron differ in quantum mechanics?

Hydrogen atom, what's the wave equation for the atom's nucleus?

Why could angular momentum and spin add together? (Mathematical Proofs)

In Maxwell equations, why time derivatives only appear together with Curl?

Distinguish Definitions: Realism Scientific, Realism, and realistic

What's the difference between rotational Energy/angular momentum and linear kinetic energy/linear momentum?

$dQ=Tds$ and quasistatic process

In ideal gas $\partial_V(PdV)_T=P$

Partial deritative of $\partial_V(PV)_T$ with $PV=nRT$

Does entangled states must become non entangled states after the measurement?

$\langle xp+px\rangle|_{t=0}=2\langle p\rangle\langle x\rangle|_{t=0}$ for the free particle?

Mathematical proof that Fermions are half-integer spin particles, and half-integer spin particles are Fermions [duplicate]

How to experimentally construct an imaginary(complex) potential, and what does it mean?

Copenhagen interpretation and argument of boundary condition [duplicate]

The invariance of BEC and curved space

Particle in a box, what's the most likely states for particle to jump to?(by calculation)

Momentum space in real computation

Clebsch–Gordan coefficients mathematical proof for bigger $\Delta m$ make the sign between vertical jump

What was the implication of Quaternions in modern (21th) physics and usage in electrodynamics in 19th century? [closed]

Symmetry of Hamiltonian in harmonic oscillator

reading the bubble chamber image

Prove Spin of a massless particle $S_z=\pm1$

States created by translation operator

Why energy plays such an important role among other conservative quantities

Energy $E_n$ for eigenstates $n$ and position probabilistic distribution

Question about creating a High energy gap

Particle in a box momentum and position, expectation and uncertainty in stationary states

Substitute Schrödinger Equation by complex analysis, was the substitution correct?

Step potential well solve the other kind of given boundary condition

Calculate Tensor and its transformations, transformation of derivatives of dependent variables