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aygx
  • Member for 2 years, 4 months
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3 votes
1 answer
703 views

Stress-energy tensor components for a perfect fluid

2 votes
0 answers
121 views

Choosing diffeomorphisms for the pullback metric in the Weak Field approximation

2 votes
1 answer
58 views

Finding the maps inside of the Nambo-Goto action

2 votes
0 answers
106 views

Second covariant derivative product rule [duplicate]

2 votes
1 answer
275 views

Different Lagrangian formulas for geodesics [duplicate]

2 votes
2 answers
2k views

Christoffel symbols calculation

2 votes
2 answers
363 views

Christoffel symbol metric connection

2 votes
1 answer
149 views

Definition of stress-energy tensor for the EFEs and other arbitrary cases

1 vote
0 answers
95 views

Spacetime distortion and wormholes

1 vote
0 answers
51 views

Schwarzchild Metric ODE for θ solution

1 vote
0 answers
147 views

Kerr metric geodesics using EL equations

1 vote
1 answer
220 views

Stress-energy tensor given Einstein tensor [duplicate]

1 vote
2 answers
244 views

Confusion with the variational operator $\delta$ and finding variations

1 vote
1 answer
192 views

Variational operator confusion

1 vote
0 answers
115 views

Mathematical prerequisites for M-theory [duplicate]

0 votes
3 answers
285 views

Double Sums in Einstein Notation

0 votes
1 answer
105 views

Double Einstein summation simplification

0 votes
1 answer
96 views

How do we know what definition to choose for the stress energy tensor for a situation?

0 votes
0 answers
71 views

Lie Symmetry method for solving perfect fluid SEM Tensor Einstein Equations

0 votes
2 answers
200 views

Cases for weak field approximation for EFEs being applied to non-weak fields

0 votes
1 answer
168 views

Commutation relation confusion of ladder operators in Quantum Mechanics

0 votes
1 answer
334 views

Transformation matrix from Cartesian to Polar of a Covariant vector

0 votes
1 answer
103 views

Approach to QFT needed for string theory, canonical quantization or path integral? [closed]

0 votes
0 answers
83 views

Unpacking integrals in QFT and their notation

0 votes
1 answer
86 views

Doubt on 3d analog on gaussian integral for QFT

0 votes
1 answer
150 views

Kerr Solution metric ansatz for EFEs

0 votes
1 answer
45 views

Tensor contractions in the transformation coefficients of a primed tensor

0 votes
1 answer
105 views

Orbital paths of planets

0 votes
1 answer
160 views

Schwarzschild metric system of geodesic differential equations

0 votes
0 answers
86 views

Geodesic deviation second covariant derivative