Metric-tensor tutorials, questions, and resources

Off-diagonal terms in metric for 4D space-time

October 1st, 2022

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Normal frames, locally inertial frame and freely falling frame?

January 29th, 2020

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Difference between slanted indices on a tensor

August 1st, 2022

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Polyakov action: difference induced metric and dynamical metric

August 1st, 2022

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Conformal transformation equation

May 14th, 2020

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How the Lorentz transformation affects the metric tensor?

September 10th, 2020

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Does isotropy imply homogeneity?

August 1st, 2022

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Why is Minkowski spacetime in polar coordinates treated in texts as flat spacetime?

June 27th, 2020

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Why do we need a metric to define gradient?

February 4th, 2021

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How is the second-order covariant derivative of a scalar computed?

August 1st, 2022

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Proof of the Anti-Commutation Relation for Gamma Matrices from Dirac Equation

August 1st, 2022

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"Derivation" of Minkowski metric?

May 17th, 2020

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Calculate divergence of vector in curvilinear coordinates using the metric

April 30th, 2020

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When writing this Lorentz transform as a matrix why do we take the transpose?

March 4th, 2020

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What manifold is spacetime?

August 1st, 2022

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Does Pythagoras theorem hold for length contraction according to Special relativity?

July 21st, 2021

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Schwarzschild metric coordinate sign change in $0\leq r \leq 2GM$

December 20th, 2021

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Variation of modified Einstein Hilbert Action

January 11th, 2020

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Why does Minkowski space provide an accurate description of flat spacetime?

August 1st, 2022

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Simple conceptual question conformal field theory

December 15th, 2020

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What is the Lagrangian from which the Klein-Gordon equation is derived in QFT?

September 15th, 2021

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Energy-momentum tensor and covariant derivative

April 27th, 2020

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Tetrad formalism vs coordinate formalism example

September 28th, 2020

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Why does the FLRW metric assume constant curvature?

March 10th, 2020

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What's the variation of the Christoffel symbols with respect to the metric?

September 4th, 2020

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A helpful proof in contracting the Christoffel symbol?

February 9th, 2020

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Raising and Lowering Indices of Levi-Civita Symbols (+---) metric?

August 1st, 2022

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What is the radius of the event horizon?

August 1st, 2022

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String frame and Einstein frame for a Dp-brane

July 21st, 2020

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What's the importance of conformal transformations in general relativity?

November 30th, 2020

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