User Kamil

4

votes

3

answers

847

views

Relativistic correction to Hydrogen atom - Perturbation theory

Oct 18 at 12:16 Thomas Fritsch 7,170

1

4

votes

1

answer

106

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 4,106

1

4

votes

0

answers

208

views

Feynman rules for this perturbative expansion in Grassmann variables

homework-and-exercises quantum-field-theory feynman-diagrams integration grassmann-numbers

Apr 11 '18 at 18:46 Kamil 547

1

3

votes

2

answers

254

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 70.1k

1

3

votes

0

answers

47

views

About ghost D-branes and wrong statistics

quantum-field-theory string-theory branes

Aug 9 '18 at 20:44 Kamil 547

3

votes

1

answer

56

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♦ 121k

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

3

votes

1

answer

4k

views

Expectation value of Hamiltonian?

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

Aug 9 '16 at 20:59 Elias Riedel Gårding 1,368

2

votes

2

answers

1k

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 13.4k

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

134

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 23.3k

2

votes

1

answer

358

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 802

1

vote

0

answers

80

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♦ 121k

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

50

views

spacetime supersymmetric string action and kappa-transformations

string-theory supersymmetry

Jun 4 '18 at 20:46 Kamil 547

1

vote

1

answer

150

views

Glebsch-Gordan coefficient equal to unity (special case)

quantum-mechanics angular-momentum

Nov 30 '17 at 0:57 ZeroTheHero 25.9k

1

vote

3

answers

5k

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

1

answer

2k

views

Proving this completeness relation for polarization of photon?

homework-and-exercises photons quantum-electrodynamics polarization

Jan 9 '17 at 22:45 Name YYY 7,142

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 52.6k

1

vote

1

answer

413

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♦ 121k

1

vote

1

answer

733

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 1,305

1

vote

4

answers

1k

views

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

classical-mechanics energy-conservation

Jan 17 '15 at 14:33 Jolie 2,456

0

votes

0

answers

71

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♦ 121k

0

votes

1

answer

68

views

Question about NS ground state of superstring in the RNS formalism

string-theory supersymmetry

Jun 2 '18 at 19:33 user110373 1,059

0

votes

1

answer

310

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 490

0

votes

2

answers

3k

views

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

quantum-mechanics angular-momentum quantum-spin

Jun 20 '16 at 7:03 porphyrin 352

0

votes

1

answer

66

views

Interaction potential in radial equation (central potentials)

quantum-mechanics

Mar 31 '16 at 21:06 Noiralef 5,090

0

votes

0

answers

454

views

Energy eigenfunctions of particle on a ring

quantum-mechanics

Mar 29 '16 at 22:23 Kamil 547

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

64

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

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?

Feynman rules for this perturbative expansion in Grassmann variables

Question about the Faddeev-Popov method for gauge-fixing

About ghost D-branes and wrong statistics

Question on BRST closed vectors which are also co-closed

Force between two finite parallel current carrying wires

Expectation value of Hamiltonian?

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?

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

Glebsch-Gordan coefficient equal to unity (special case)

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

Proving this completeness relation for polarization of photon?

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?