User CAF

2

votes

1

answer

115

views

PDFs expressed through matrix elements of bi-local operators

Nov 12 at 17:03 Community♦ 1

1

vote

1

answer

239

views

Debye-Hückel theory and the continuum approximation

statistical-mechanics condensed-matter continuum-mechanics debye-length

Sep 25 at 18:03 Community♦ 1

1

2

votes

1

answer

134

views

Towards a matrix element definition of PDF

quantum-field-theory quantum-chromodynamics dirac-delta-distributions protons parton

Aug 26 at 3:03 Community♦ 1

1

2

votes

1

answer

121

views

Resources to learn about the Higgs theory at undergraduate level

symmetry resource-recommendations soft-question higgs symmetry-breaking

May 27 at 18:48 Qmechanic♦ 118k

0

votes

0

answers

32

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Literature result for generic one-loop triangle integral

resource-recommendations feynman-diagrams integration

May 10 at 17:08 Qmechanic♦ 118k

3

1

vote

1

answer

209

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Srednicki - computing divergent piece of loop integral

quantum-field-theory trace dimensional-regularization

Oct 28 '18 at 14:55 Turgon 200

1

4

votes

0

answers

200

views

Question about derivation of tensor in Di Francesco's CFT

conformal-field-theory metric-tensor tensor-calculus

Sep 15 '18 at 10:50 CAF 2,896

1

vote

1

answer

148

views

Analytical continuation of 2,3,4-point integrals

quantum-field-theory quantum-chromodynamics perturbation-theory analyticity

Jul 25 '18 at 4:40 HirenPatel 86

0

votes

1

answer

214

views

Viable combinations of gluons interacting with colour singlet states

quantum-field-theory group-theory feynman-diagrams quantum-chromodynamics gluons

Jan 1 '18 at 20:49 knzhou 64.6k

1

vote

1

answer

75

views

Do these pair of diagrams need a relative sign due to Fermi statistics?

quantum-field-theory feynman-diagrams fermions quantum-chromodynamics spin-statistics

Nov 2 '17 at 14:55 Community♦ 1

3

6

votes

3

answers

575

views

Derivation of the Noether current

lagrangian-formalism variational-principle action noethers-theorem variational-calculus

Sep 19 '17 at 22:57 Community♦ 1

1

vote

1

answer

170

views

Leading order DGLAP evolution

quantum-field-theory quantum-chromodynamics gluons scales parton

Aug 16 '17 at 12:58 AccidentalFourierTransform 31.6k

5

6

votes

3

answers

774

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Off-shell and on-shell assumptions within the derivation of Noether's theorem

quantum-field-theory lagrangian-formalism conservation-laws symmetry noethers-theorem

Apr 28 '17 at 0:03 rwold 199

1

3

votes

1

answer

680

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Constructing Ward identity associated with conserved currents

quantum-field-theory noethers-theorem stress-energy-momentum-tensor correlation-functions ward-identity

Apr 11 '17 at 11:47 Community♦ 1

1

vote

1

answer

98

views

Use of the delta function in the cancellation of real and virtual corrections

quantum-field-theory dirac-delta-distributions regularization

Feb 19 '17 at 3:15 Community♦ 1

2

votes

1

answer

340

views

Spontaneous symmetry breaking by two scalar multiplets

homework-and-exercises symmetry group-theory lie-algebra symmetry-breaking

Feb 9 '17 at 17:21 Cosmas Zachos 21.9k

2

3

votes

1

answer

24k

views

Charge inside conductor

electrostatics charge gauss-law conductors

Jan 12 '17 at 3:37 user141794 1

1

vote

1

answer

206

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Lie algebra decomposition of the gluon field

gauge-theory representation-theory lie-algebra gauge-invariance gluons

Jan 8 '17 at 20:10 ACuriousMind♦ 79.4k

1

0

votes

0

answers

171

views

Contributions to final states in the optical theorem

quantum-field-theory renormalization perturbation-theory regularization scattering-cross-section

Jan 6 '17 at 19:43 DanielSank 19.9k

3

2

votes

1

answer

704

views

How are the generators of $\mathrm{SU}(3)$ represented on the gluon space?

hilbert-space quantum-chromodynamics representation-theory lie-algebra gluons

Jan 4 '17 at 14:46 Qmechanic♦ 118k

1

3

votes

2

answers

900

views

Symmetry factor via Wick's theorem

quantum-field-theory symmetry feynman-diagrams correlation-functions wick-theorem

Dec 9 '16 at 8:30 CAF 2,896

1

0

votes

0

answers

328

views

One loop corrections to Compton scattering

quantum-field-theory photons feynman-diagrams gluons

Nov 8 '16 at 21:02 CAF 2,896

1

vote

0

answers

85

views

Deep inelastic scattering and the $Q^2 \rightarrow \infty$ limit.

quantum-field-theory metric-tensor quantum-chromodynamics causality scattering-cross-section

Oct 25 '16 at 8:35 CAF 2,896

2

3

votes

1

answer

239

views

Relevance of the condensate $\langle 0 | \bar q q | 0 \rangle$ to SSB of chiral QCD symmetry

quantum-field-theory quantum-chromodynamics symmetry-breaking chirality isospin-symmetry

Aug 14 '16 at 6:59 ved 701

1

2

votes

1

answer

387

views

On shell and off shell simultaneously?

quantum-field-theory feynman-diagrams quarks trace dimensional-regularization

May 22 '16 at 20:32 CAF 2,896

0

votes

1

answer

515

views

Raising and lowering operators for a composite isospin $SU(2)$ system

standard-model tensor-calculus representation-theory quarks isospin-symmetry

May 7 '16 at 17:06 xi45 575

1

vote

0

answers

85

views

Wick contraction in proton-pion production

quantum-field-theory feynman-diagrams s-matrix-theory wick-theorem

Apr 26 '16 at 20:05 CAF 2,896

1

vote

1

answer

1k

views

Crossing Symmetry in Bhabha scattering and Moller scattering

quantum-field-theory symmetry quantum-electrodynamics scattering

Apr 24 '16 at 22:06 TwoBs 4,087

1

2

votes

0

answers

77

views

Decimation of a triangular lattice [closed]

homework-and-exercises statistical-mechanics renormalization ising-model

Apr 20 '16 at 17:32 CAF 2,896

1

3

votes

2

answers

449

views

Bilinears in adjoint representation

quantum-field-theory group-theory group-representations dirac-equation spinors

Apr 10 '16 at 18:23 TotallyRhombus 2,500

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68 Questions

PDFs expressed through matrix elements of bi-local operators

Debye-Hückel theory and the continuum approximation

Towards a matrix element definition of PDF

Resources to learn about the Higgs theory at undergraduate level

Literature result for generic one-loop triangle integral

Srednicki - computing divergent piece of loop integral

Question about derivation of tensor in Di Francesco's CFT

Analytical continuation of 2,3,4-point integrals

Viable combinations of gluons interacting with colour singlet states

Do these pair of diagrams need a relative sign due to Fermi statistics?

Derivation of the Noether current

Leading order DGLAP evolution

Off-shell and on-shell assumptions within the derivation of Noether's theorem

Constructing Ward identity associated with conserved currents

Use of the delta function in the cancellation of real and virtual corrections

Spontaneous symmetry breaking by two scalar multiplets

Charge inside conductor

Lie algebra decomposition of the gluon field

Contributions to final states in the optical theorem

How are the generators of $\mathrm{SU}(3)$ represented on the gluon space?

Symmetry factor via Wick's theorem

One loop corrections to Compton scattering

Deep inelastic scattering and the $Q^2 \rightarrow \infty$ limit.

Relevance of the condensate $\langle 0 | \bar q q | 0 \rangle$ to SSB of chiral QCD symmetry

On shell and off shell simultaneously?

Raising and lowering operators for a composite isospin $SU(2)$ system

Wick contraction in proton-pion production

Crossing Symmetry in Bhabha scattering and Moller scattering

Decimation of a triangular lattice [closed]

Bilinears in adjoint representation