User Lopey Tall

3

5

votes

1

answer

147

views

General relativity as a gauge theory of the Poincaré algebra

Feb 13 at 21:46 Nikita 1,175

1

2

votes

0

answers

103

views

Gravity from algebra

gravity resource-recommendations gauge-theory poincare-symmetry

Oct 31 '18 at 4:23 Qmechanic♦ 121k

1

vote

1

answer

55

views

Dirac delta, Fourier transform & exponentials

fourier-transform integration dirac-delta-distributions

Feb 17 at 17:16 Qmechanic♦ 121k

2

1

vote

1

answer

48

views

Commutator of covariant derivatives to get the curvature/field strength

gauge-theory curvature differentiation yang-mills covariance

Jan 5 at 12:45 Qmechanic♦ 121k

1

vote

2

answers

84

views

Gauge theory formalism

gauge-theory supergravity

Dec 19 at 16:38 Lopey Tall 337

1

vote

1

answer

58

views

(Physics version of) Taylor expansion. In the the context of deriving a Lie groups generators (a Lie algebra from a Lie group)

group-theory differentiation lie-algebra calculus

Oct 13 at 11:02 Qmechanic♦ 121k

1

vote

1

answer

203

views

Wedge product, tensor product, and Levi-Civita tensor/symbol

general-relativity metric-tensor tensor-calculus

Aug 14 at 17:34 Lopey Tall 337

1

vote

2

answers

75

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Alternative definition for Lorentz factor?

general-relativity metric-tensor vectors velocity

Aug 3 at 3:56 Qmechanic♦ 121k

1

vote

0

answers

56

views

Error with generators of Lorentz group (basis of Lorentz Lie algebra) [closed]

homework-and-exercises special-relativity group-theory lorentz-symmetry lie-algebra

Apr 27 at 23:48 Qmechanic♦ 121k

1

vote

0

answers

51

views

Entropy and observers

cosmology entropy universe observers

Nov 30 '18 at 21:49 Qmechanic♦ 121k

1

vote

1

answer

196

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Isometry definition

general-relativity differential-geometry symmetry ads-cft holographic-principle

Oct 16 '18 at 5:48 A.V.S. 6,939

1

vote

1

answer

176

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Why is angular kinetic energy a part of effective potential energy for orbits?

orbital-motion potential-energy

May 23 '18 at 16:47 Oktay Doğangün 1,398

0

votes

1

answer

12

views

Correct Boltzmann counting for the partition function for diatomic molecule

thermodynamics statistical-mechanics partition-function

5h ago Maisenberg 11

0

votes

1

answer

24

views

Given commutation relation for fields, derive commutation relations for 3-momentum valued creation and annihiliation vectors

quantum-field-theory commutator

11h ago Davide Morgante 338

0

votes

2

answers

27

views

Given a translation of coordinates (and thus of fields) how does the lagrangian (density) transform?

field-theory noethers-theorem

12h ago GRrocks 1,340

0

votes

2

answers

79

views

Generalizing the covariant derivate for gauge theory

gauge-theory differentiation covariance

Dec 19 at 16:34 Lopey Tall 337

0

votes

0

answers

44

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Product rule in gauge theory

gauge-theory

Dec 16 at 13:01 Lopey Tall 337

0

votes

0

answers

11

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Momentum/position state normalization (equivalent statements)

quantum-mechanics

Nov 15 at 12:05 Lopey Tall 337

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votes

1

answer

58

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Determining the manifold picture of a Lie group — and thus determining global properties

differential-geometry group-theory lie-algebra

Oct 15 at 13:34 David Bar Moshe 25.7k

0

votes

0

answers

37

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Lorentz algebra and group question with regards to operator representaion of $M^{\mu\nu}$

group-theory lorentz-symmetry lie-algebra

Oct 8 at 15:20 Lopey Tall 337

0

votes

0

answers

58

views

Why strings, and confusion about string coupling constant

string-theory quantum-gravity

Aug 9 at 15:27 Lopey Tall 337

0

votes

1

answer

77

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A priori knowledge of the components of the Ricci tensor

general-relativity symmetry metric-tensor curvature

Jul 19 at 0:32 G. Smith 30.9k

0

votes

2

answers

54

views

Confusion regarding Ricci Scalar

homework-and-exercises general-relativity differential-geometry curvature

Jul 7 at 18:51 Qmechanic♦ 121k

0

votes

0

answers

97

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Geodesic equation — alternative form

general-relativity differential-geometry metric-tensor geodesics

Jun 11 at 20:18 Qmechanic♦ 121k

0

votes

2

answers

73

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Index (Einstein summation) notation question

special-relativity metric-tensor notation differentiation

Jun 6 at 16:13 Lopey Tall 337

1

0

votes

1

answer

78

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Reference request for Lie algebras

general-relativity resource-recommendations lie-algebra poincare-symmetry galilean-relativity

Apr 21 at 20:40 ungerade 1,114

0

votes

2

answers

321

views

Finding the expression for probability density (the Klein Gordon equation)

special-relativity field-theory probability density klein-gordon-equation

Feb 5 '19 at 23:33 Frobenius 7,121

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27 Questions

General relativity as a gauge theory of the Poincaré algebra

Gravity from algebra

Dirac delta, Fourier transform & exponentials

Commutator of covariant derivatives to get the curvature/field strength

Gauge theory formalism

(Physics version of) Taylor expansion. In the the context of deriving a Lie groups generators (a Lie algebra from a Lie group)

Wedge product, tensor product, and Levi-Civita tensor/symbol

Alternative definition for Lorentz factor?

Error with generators of Lorentz group (basis of Lorentz Lie algebra) [closed]

Entropy and observers

Isometry definition

Why is angular kinetic energy a part of effective potential energy for orbits?

Correct Boltzmann counting for the partition function for diatomic molecule

Given commutation relation for fields, derive commutation relations for 3-momentum valued creation and annihiliation vectors

Given a translation of coordinates (and thus of fields) how does the lagrangian (density) transform?

Generalizing the covariant derivate for gauge theory

Product rule in gauge theory

Momentum/position state normalization (equivalent statements)

Determining the manifold picture of a Lie group — and thus determining global properties

Lorentz algebra and group question with regards to operator representaion of $M^{\mu\nu}$

Why strings, and confusion about string coupling constant

A priori knowledge of the components of the Ricci tensor

Confusion regarding Ricci Scalar

Geodesic equation — alternative form

Index (Einstein summation) notation question

Reference request for Lie algebras

Finding the expression for probability density (the Klein Gordon equation)