User Urgje

7 votes

Meaning of kinetic part in the Lagrangian density?

answered Feb 14, 2014 at 22:03

7 votes

Accepted

What is the commutator of an operator and its derivative?

answered Mar 14, 2014 at 21:38

6 votes

Effective Hamiltonian / Perturbation theory for non-degenerate case

answered May 13, 2014 at 22:21

5 votes

Accepted

Are the Møller wave operators $\Omega_\pm$ related to $\lim_{t\rightarrow\infty}U(t)$ from field theory?

answered Dec 8, 2012 at 11:41

4 votes

Schrödinger field operators and their commutation relations

answered Jan 1, 2014 at 15:04

4 votes

Transformer ratios - 1:2 vs 50:100

answered Aug 18, 2014 at 9:40

3 votes

Accepted

Can the magnetic fields of EM radiation be harnessed or measured?

answered Jul 30, 2014 at 21:35

3 votes

Causality and response functions

answered Oct 5, 2015 at 10:37

3 votes

Can we have a physical interpretation for a time independent Schrodinger equation of this form?

answered Jan 1, 2014 at 15:16

3 votes

Accepted

Can two spools shield you effectively against radiation

answered Jan 4, 2014 at 21:37

3 votes

Is forward scattering = no scattering?

answered Jan 1, 2014 at 14:32

3 votes

Is the canonical momentum conserved when a particle moves in magnetic field?

answered Feb 10, 2014 at 20:20

3 votes

Derivation of momentum operator

answered Nov 23, 2015 at 11:45

3 votes

Non-dimensionalize Schroedinger's equation for this potential

answered Dec 4, 2015 at 22:21

2 votes

Accepted

How do we take the limit of this quantum operation?

answered Nov 22, 2015 at 14:14

2 votes

can we quantize a static electron-magnetic vector potential which is time-independent?

answered Feb 4, 2016 at 11:24

2 votes

Accepted

Shifting momentum by a constant in the Schrodinger Equation

answered Dec 21, 2015 at 11:21

2 votes

Definition of quantum anharmonicity

answered Feb 15, 2014 at 11:12

2 votes

How do I obtain the Lagrangian in standard for using action?

answered Feb 18, 2014 at 16:46

2 votes

Heat transfer by conduction is not possible for gases?

answered Feb 7, 2014 at 20:26

2 votes

Accepted

minimizing the Higgs potential equivalent to finding the minimum?

answered Dec 27, 2013 at 15:14

2 votes

Non-normalizable QM bound state in 4 spatial dimensions?

answered Sep 26, 2013 at 20:12

2 votes

Is it wasteful to use a heating element, instead of doing useful work?

answered Jan 11, 2014 at 11:28

2 votes

What is the expectation value of the position times momentum operator?

answered Feb 16, 2015 at 9:56

2 votes

What will happen to a permanent magnet if we keep the same magnetic poles of two magnets close together for a long time?

answered Dec 11, 2014 at 11:30

2 votes

scattering by weak potential and the adiabatic hypothesis

answered Oct 15, 2014 at 15:45

2 votes

Accepted

Single photon pulse and its electromagnet field

answered Nov 8, 2014 at 10:24

2 votes

Accepted

"Radiative" particle decay?

answered Oct 2, 2014 at 10:40

2 votes

Is there any operator behind probability, in quantum mechanics?

answered Jun 4, 2014 at 11:50

2 votes

Accepted

Differences between absorption, transparency, reflection, and emission

answered Jun 5, 2014 at 9:52

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89 Answers

Meaning of kinetic part in the Lagrangian density?

What is the commutator of an operator and its derivative?

Effective Hamiltonian / Perturbation theory for non-degenerate case

Are the Møller wave operators $\Omega_\pm$ related to $\lim_{t\rightarrow\infty}U(t)$ from field theory?

Schrödinger field operators and their commutation relations

Transformer ratios - 1:2 vs 50:100

Can the magnetic fields of EM radiation be harnessed or measured?

Causality and response functions

Can we have a physical interpretation for a time independent Schrodinger equation of this form?

Can two spools shield you effectively against radiation

Is forward scattering = no scattering?

Is the canonical momentum conserved when a particle moves in magnetic field?

Derivation of momentum operator

Non-dimensionalize Schroedinger's equation for this potential

How do we take the limit of this quantum operation?

can we quantize a static electron-magnetic vector potential which is time-independent?

Shifting momentum by a constant in the Schrodinger Equation

Definition of quantum anharmonicity

How do I obtain the Lagrangian in standard for using action?

Heat transfer by conduction is not possible for gases?

minimizing the Higgs potential equivalent to finding the minimum?

Non-normalizable QM bound state in 4 spatial dimensions?

Is it wasteful to use a heating element, instead of doing useful work?

What is the expectation value of the position times momentum operator?

What will happen to a permanent magnet if we keep the same magnetic poles of two magnets close together for a long time?

scattering by weak potential and the adiabatic hypothesis

Single photon pulse and its electromagnet field

"Radiative" particle decay?

Is there any operator behind probability, in quantum mechanics?

Differences between absorption, transparency, reflection, and emission