User HYW

16 votes

3 answers

8k views

Meaning of Fock Space

asked Dec 3, 2016 at 15:35

5 votes

2 answers

935 views

About Self-Energy/Self-Potential Energy

electromagnetism quantum-field-theory special-relativity

asked Sep 22, 2016 at 14:58

4 votes

2 answers

262 views

Physical Origin of Gravitational Mass Defect

general-relativity mass

asked Nov 23, 2016 at 15:59

3 votes

0 answers

152 views

Parity of spherical harmonic vector

quantum-field-theory parity spherical-harmonics

asked Dec 21, 2016 at 16:09

3 votes

3 answers

753 views

Math in deriving Pauli Equation

homework-and-exercises quantum-electrodynamics differentiation

asked Feb 24, 2017 at 16:22

3 votes

1 answer

347 views

Lenz' law and magnetic moment

electromagnetism magnetic-fields electromagnetic-induction magnetic-moment lenz-law

asked Apr 22, 2017 at 4:31

3 votes

2 answers

151 views

Question about completely antisymmetric unit pseudotensor

general-relativity differential-geometry tensor-calculus coordinate-systems notation

asked Oct 13, 2016 at 12:53

3 votes

1 answer

219 views

Contracting Einstein Equation

homework-and-exercises general-relativity tensor-calculus

asked Oct 30, 2016 at 15:06

2 votes

1 answer

198 views

Eikonal Equation in Constant Gravitational Field

general-relativity

asked Oct 18, 2016 at 14:40

2 votes

2 answers

236 views

Question about elliptical orbits

newtonian-mechanics newtonian-gravity orbital-motion inertial-frames celestial-mechanics

asked Oct 2, 2016 at 16:21

2 votes

1 answer

54 views

$r$-representation of Operator

quantum-mechanics dirac-delta-distributions matrix-elements

asked Dec 26, 2019 at 8:30

1 vote

1 answer

36 views

Why a softer phonon is easier to get excited

solid-state-physics

asked Mar 23, 2019 at 20:15

1 vote

1 answer

3k views

Integral spin and half integral spin

quantum-field-theory quantum-spin fermions bosons spin-statistics

asked Feb 4, 2017 at 21:29

1 vote

0 answers

149 views

About Schroedinger Equation in Josephson Junction

quantum-mechanics superconductivity

asked Feb 25, 2017 at 17:52

1 vote

1 answer

318 views

Spontaneous Creation of Electron and Positron Pair

quantum-electrodynamics antimatter dirac-equation

asked Mar 1, 2017 at 5:23

1 vote

1 answer

93 views

Collapse of black hole [duplicate]

general-relativity black-holes

asked Nov 20, 2016 at 4:59

1 vote

1 answer

80 views

Would there be radiation if there is no relativity?

electromagnetism special-relativity electromagnetic-radiation

asked Oct 9, 2016 at 14:10

1 vote

1 answer

271 views

Raising index of variation

homework-and-exercises general-relativity metric-tensor tensor-calculus covariance

asked Oct 29, 2016 at 14:29

0 votes

0 answers

180 views

Lienard -Wiechert Potential Equation in Landau Vol 2

electromagnetism special-relativity lienard-wiechert

asked Sep 19, 2016 at 14:34

0 votes

1 answer

140 views

Question about Ricci Tensor

general-relativity

asked Oct 24, 2016 at 14:48

0 votes

1 answer

579 views

Contracting Bianchi Identity

homework-and-exercises general-relativity curvature conventions

asked Nov 1, 2016 at 14:38

0 votes

2 answers

130 views

About Interval, World Line and 4-Velocity Vector

general-relativity

asked Nov 7, 2016 at 16:01

0 votes

1 answer

130 views

Questions about metric tensor

metric-tensor definition notation

asked Oct 13, 2016 at 4:03

0 votes

1 answer

2k views

Raising and Lowering Indices Question

general-relativity metric-tensor tensor-calculus

asked Oct 16, 2016 at 15:02

0 votes

0 answers

31 views

Formation of planet

astronomy planets

asked Oct 16, 2016 at 23:08

0 votes

1 answer

50 views

Question about derivation of vector potential

electromagnetism

asked Oct 8, 2016 at 16:29

0 votes

1 answer

159 views

Relationship between H and B

electromagnetism special-relativity

asked Oct 8, 2016 at 17:09

0 votes

1 answer

2k views

What is the spin of photon [duplicate]

quantum-mechanics quantum-field-theory quantum-spin quantum-electrodynamics

asked Dec 24, 2016 at 16:30

0 votes

1 answer

117 views

About Kepler's 2nd Law

newtonian-mechanics newtonian-gravity orbital-motion celestial-mechanics

asked Apr 16, 2017 at 16:08

0 votes

0 answers

436 views

About Polarization Density Matrix of Electron

quantum-mechanics quantum-field-theory

asked Feb 19, 2017 at 17:08

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33 Questions

Meaning of Fock Space

About Self-Energy/Self-Potential Energy

Physical Origin of Gravitational Mass Defect

Parity of spherical harmonic vector

Math in deriving Pauli Equation

Lenz' law and magnetic moment

Question about completely antisymmetric unit pseudotensor

Contracting Einstein Equation

Eikonal Equation in Constant Gravitational Field

Question about elliptical orbits

$r$-representation of Operator

Why a softer phonon is easier to get excited

Integral spin and half integral spin

About Schroedinger Equation in Josephson Junction

Spontaneous Creation of Electron and Positron Pair

Collapse of black hole [duplicate]

Would there be radiation if there is no relativity?

Raising index of variation

Lienard -Wiechert Potential Equation in Landau Vol 2

Question about Ricci Tensor

Contracting Bianchi Identity

About Interval, World Line and 4-Velocity Vector

Questions about metric tensor

Raising and Lowering Indices Question

Formation of planet

Question about derivation of vector potential

Relationship between H and B

What is the spin of photon [duplicate]

About Kepler's 2nd Law

About Polarization Density Matrix of Electron