User Kamil

2

5

votes

0

answers

285

views

Feynman rules for this perturbative expansion in Grassmann variables

Apr 11 '18 at 18:46 Kamil 597

4

votes

3

answers

1k

views

Relativistic correction to Hydrogen atom - Perturbation theory

quantum-mechanics special-relativity atomic-physics perturbation-theory hydrogen

Oct 18 '19 at 12:16 Thomas Fritsch 15.3k

1

4

votes

1

answer

146

views

What happens to the $U(1)$ factor in the $U(N)$ SYM gauge group of the AdS/CFT correspondence?

string-theory gauge-theory group-theory ads-cft holographic-principle

Jan 9 '19 at 19:57 Nogueira 4,827

2

4

votes

2

answers

459

views

Question about the Faddeev-Popov method for gauge-fixing

quantum-field-theory gauge-theory path-integral gauge

Dec 21 '18 at 17:20 knzhou 85.2k

2

4

votes

0

answers

51

views

About ghost D-branes and wrong statistics

quantum-field-theory string-theory branes

Aug 9 '18 at 20:44 Kamil 597

3

4

votes

1

answer

5k

views

Expectation value of Hamiltonian?

quantum-mechanics homework-and-exercises wavefunction schroedinger-equation hamiltonian

Aug 9 '16 at 20:59 Elias Riedel Gårding 1,629

3

votes

1

answer

61

views

Question on BRST closed vectors which are also co-closed

quantum-field-theory hilbert-space gauge-theory brst

Apr 22 '18 at 12:21 Qmechanic♦ 142k

1

3

votes

1

answer

2k

views

Force between two finite parallel current carrying wires

electromagnetism electricity magnetic-fields

Mar 23 '18 at 19:08 Community♦ 1

2

votes

1

answer

3k

views

Proving this completeness relation for polarization of photon?

homework-and-exercises photons quantum-electrodynamics polarization

Jan 9 '17 at 22:45 Name YYY 7,689

2

votes

2

answers

2k

views

Local gauge invariance of Dirac Lagrangian

homework-and-exercises quantum-field-theory lagrangian-formalism gauge-theory field-theory

Nov 6 '16 at 13:41 innisfree 14.3k

1

2

votes

1

answer

1k

views

Lorentz boosts in some combined direction

general-relativity special-relativity

Oct 7 '16 at 21:37 Community♦ 1

1

2

votes

1

answer

138

views

New natural frequency $\omega$ of system of two charges and spring [closed]

homework-and-exercises electrostatics spring oscillators

Aug 7 '16 at 1:57 sammy gerbil 25.6k

2

votes

1

answer

427

views

Solution for Schrödinger equation for constant box potential?

quantum-mechanics homework-and-exercises wavefunction schroedinger-equation potential

Jun 10 '16 at 21:51 philip_0008 812

1

vote

1

answer

183

views

Clebsch-Gordan coefficient equal to unity (special case)

quantum-mechanics angular-momentum

Mar 4 at 13:39 Abdelmalek Abdesselam 4,799

1

vote

0

answers

101

views

Equations of motion for a Weyl spinor in the context of SUSY

lagrangian-formalism supersymmetry fermions spinors variational-calculus

Oct 17 '18 at 13:54 Qmechanic♦ 142k

3

1

vote

1

answer

3k

views

Dimension of Hilbert space of spin $1/2$ identical particles?

quantum-mechanics

Oct 3 '18 at 12:19 Mukut kumar 1

1

vote

0

answers

51

views

spacetime supersymmetric string action and kappa-transformations

string-theory supersymmetry

Jun 4 '18 at 20:46 Kamil 597

1

vote

3

answers

6k

views

Why does excess of charge in an isolated conductor move to the surface?

electromagnetism electrostatics

Feb 28 '17 at 1:46 Jon Doe 1

1

vote

2

answers

3k

views

Why does mechanical energy have to equal zero to find escape velocity?

newtonian-mechanics newtonian-gravity energy-conservation escape-velocity

Apr 9 '16 at 2:36 Alfred Centauri 55.5k

1

vote

1

answer

639

views

Trace of operator defined by two state vectors in Quantum Mechanics

quantum-mechanics operators hilbert-space trace

Mar 11 '16 at 22:27 Qmechanic♦ 142k

1

vote

1

answer

813

views

Reflectivity of Metals - real and imaginary part of k-vector and complex dielectric function

electromagnetism optics solid-state-physics

May 26 '15 at 9:19 Constantine Black 1,374

1

vote

4

answers

2k

views

Why does this ball have potential energy at its lowest point?

classical-mechanics energy-conservation

Jan 17 '15 at 14:33 Tea is life 2,560

0

votes

0

answers

117

views

Unitary gauge for spontaneous symmetry breaking

homework-and-exercises lagrangian-formalism field-theory gauge-theory symmetry-breaking

Mar 8 '19 at 20:22 Qmechanic♦ 142k

0

votes

1

answer

82

views

Question about NS ground state of superstring in the RNS formalism

string-theory supersymmetry

Jun 2 '18 at 19:33 user110373 1,099

0

votes

1

answer

466

views

Determining constants of motion for this Hamiltonian? [closed]

homework-and-exercises classical-mechanics hamiltonian-formalism integrals-of-motion

Jul 23 '16 at 0:36 Haru Fujimura 520

0

votes

2

answers

5k

views

Total spin of system of two spin-$1/2$ particles

quantum-mechanics angular-momentum quantum-spin

Jun 20 '16 at 7:03 porphyrin 382

0

votes

1

answer

72

views

Interaction potential in radial equation (central potentials)

quantum-mechanics

Mar 31 '16 at 21:06 Noiralef 5,393

0

votes

0

answers

523

views

Energy eigenfunctions of particle on a ring

quantum-mechanics

Mar 29 '16 at 22:23 Kamil 597

0

votes

1

answer

2k

views

Computing energy loss for a hysteresis curve

electromagnetism electricity magnetic-fields

Jul 9 '15 at 21:03 Community♦ 1

0

votes

1

answer

65

views

How can DC-magnetic fields be produced with the aid of currents?

electromagnetism electricity magnetic-fields

Mar 14 '15 at 11:14 SystematicDisintegration 237

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32 Questions

Feynman rules for this perturbative expansion in Grassmann variables

Relativistic correction to Hydrogen atom - Perturbation theory

What happens to the $U(1)$ factor in the $U(N)$ SYM gauge group of the AdS/CFT correspondence?

Question about the Faddeev-Popov method for gauge-fixing

About ghost D-branes and wrong statistics

Expectation value of Hamiltonian?

Question on BRST closed vectors which are also co-closed

Force between two finite parallel current carrying wires

Proving this completeness relation for polarization of photon?

Local gauge invariance of Dirac Lagrangian

Lorentz boosts in some combined direction

New natural frequency $\omega$ of system of two charges and spring [closed]

Solution for Schrödinger equation for constant box potential?

Clebsch-Gordan coefficient equal to unity (special case)

Equations of motion for a Weyl spinor in the context of SUSY

Dimension of Hilbert space of spin $1/2$ identical particles?

spacetime supersymmetric string action and kappa-transformations

Why does excess of charge in an isolated conductor move to the surface?

Why does mechanical energy have to equal zero to find escape velocity?

Trace of operator defined by two state vectors in Quantum Mechanics

Reflectivity of Metals - real and imaginary part of k-vector and complex dielectric function

Why does this ball have potential energy at its lowest point?

Unitary gauge for spontaneous symmetry breaking

Question about NS ground state of superstring in the RNS formalism

Determining constants of motion for this Hamiltonian? [closed]

Total spin of system of two spin-$1/2$ particles

Interaction potential in radial equation (central potentials)

Energy eigenfunctions of particle on a ring

Computing energy loss for a hysteresis curve

How can DC-magnetic fields be produced with the aid of currents?