general-relativity

  1. Stationary v/s Static
  2. How will two equal discs, rotating with equal but opposite angular velocities and put on top of each other affect the spacetime "surrounding" them?
  3. How are frames of reference releated to each other in general realitivity?
  4. The Time Freezing Room - Theoretically possible?
  5. Deriving the Poisson bracket relation of the Ashtekar variables
  6. Electromagnetism and equivalence principle?

  7. How to get the 2d Einstein tensor in a spherically symmetric spacetime by varying the reduced Einstein-Hilbert action?

  8. Transformation matrices for basis and coordinate transformation in non-orthonormal coordinates
  9. Is Hawking Radiation compatible with a GR solution with an Infalling Observer Crossing the Event Horizon?
  10. How can I show E=mc^2 by tensors?

  11. Why the unit vector is represented as a partial derivative in GR?
  12. What if gravitational mass and inertial mass of a body had different values?

  13. With the advent of General Relativity, do Newtonian Mechanics really describe the universe correctly?

  14. Why there is no dipole gravitational wave?

  15. Energy momentum tensor of a perfect fluid with vanishing density?

  16. Owen Biesel's paper on 'The Precession of Mercury’s Perihelion'
  17. Why does gravity travel at the speed of light?
  18. Boltzmann's equation and Liouville's theorem in curved spacetime

  19. Does special relativity apply to gravity wells?

  20. Does an object creates gravitational waves when only accelerating in one direction?

  21. Hawking Radiation of normal gravitational field
  22. Misused physics analogies

  23. What is the physical interpretation of harmonic coordinates?

  24. Gregory-Laflamme Instability of Black Strings and $p$-Branes
  25. Killing tensor in Minkowski space

  26. Can a light be bent by a magnetic field?

  27. Curvature and length contraction paradox

  28. Maximizing the time near a black hole
  29. What's the key point to argue that pure gravity can't be renormalizable from two-loop?

  30. Could gravitational waves be matter waves?

  31. Poincaré group and BMS symmetry

  32. Dimensional reduction from even to odd dimensions and Chern-Simons terms

  33. String to the Sun
  34. Can we get a real ball of matter out of an empty box?

  35. Pound-Rebka-Snider experiment in the inertial frame

  36. Rotational relativity? Is there an universal frame of reference for rotation?
  37. What are BMS supertranslation symmetries?

  38. Pulling apart a Black Hole

  39. General Relativity in the absence of observers

  40. Post-Newtonian approximation for binary gravitating system

  41. For making gravity supersymmetric is a modification of Einstein's vacuum field equations necessary ( apart from adding the R-S Lagrangian)?

  42. Electromagnetism in curved spacetime
  43. When does a covariantly conserved tensor yield conserved quantities?
  44. Inferring properties of spacetime manifolds from those of chart maps

  45. How to go from a wave to a particle description of photon dynamics in curved spacetime?

  46. Could there be equivalence between anisotropic space and the presence of a field?
  47. Why is General Relativity considered a gauge theory?

  48. Assuming a fixed total mass, will the spacetime geometry outside a spherical mass distribution depend on the shape (of the distribution)?

  49. Scalar curvature of warped-product manifolds - intuition
  50. Flat space in 3 dimension space time in vacuum
  51. Necessity of the Gibbons-Hawking-York (GHY) boundary term
  52. Abstract definition of conjugate points

  53. Can an Object Look as Dense as a Black Hole in Special Relativity?
  54. Falling into a black hole – how can my perspective change from outside-observer to inside-observer?
  55. Modern treatment of effective QFT in curved spacetime

  56. Is the dynamics of spacetime observer-dependent?

  57. Does a moving object curve space-time as its velocity increases?

  58. Does mass compress space-time?

  59. Uniform Gravitational Field = No Gravitational Field?
  60. Do we apply force to an object we are touching?
  61. Physical motivation for mathematically extending solutions to Einstein's equations

  62. Parallel transport as a mapping between vector spaces

  63. Time is defined operationally to be that which is measured by clocks

  64. Sign of Lagrangian and stress-energy tensor for relativistic dust

  65. Bondi news in BMS supertranslation

  66. Conservation of Komar Mass

  67. Loss in energy during gravitational redshift

  68. Silly question about Schwarzschild Solution

  69. If an astronaut orbits earth, can both Time Dilation and Gravitational Time Dilation affect it?

  70. Does the covariant derivative still give divergence in skew coordinates?

  71. Maxwell tensor in spherical and static spacetime
  72. What are the measurable quantities in General Relativity?
  73. What is the relationship between an event happening and "seeing" an event happen?

  74. Can Einstein field equations possibly accommodate Hawking radiation?

  75. What is so natural and inevitable about the expansion of the universe?

  76. Why is the photon-sphere around a Kerr Black Hole spherical and not ellipsoid?

  77. Covariant derivative of a function confusion
  78. Repulsive gravity formulation: a query

  79. General solution to a tensor equation of this form?

  80. What is the Hamiltonian of General Relativity?

  81. Why is the mass dimension of the covariant derivative 1?

  82. Does strong causality imply the existence of convex normal neighborhoods that are causally convex?

  83. Accelerated magnet magnetic field

  84. Introductory Book on General Relativity

  85. Do the Planck voltage and the Planck current have a natural physical interpretation in classical general relativity?

  86. How to decompose the Holst action in tetrad formalism using ADM formalism and find the hamiltonian?

  87. unit of metric functions

  88. How do I get the Christoffel symbols in the Newtonian limit?

  89. Can the fabric of space-time be contoured into hills instead of just wells?

  90. Can black holes slow down a planets time to months whilst millions of year pass elsewhere?
  91. Could gravity be an emergent property of nature?
  92. Stress energy tensor components spherical coordinates

  93. Relativity Problem: Time

  94. What is space according to quantum mechanics?
  95. Wormholes and Closed Time-like Curves
  96. What is the singularity of an actual collapsing black hole?

  97. Would the hubble horizon shrink for an observer in an accelerated frame of reference?
  98. Why is the 4-velocity vector an absolute quantity?
  99. What's the point of the Hoyle–Narlikar theory of gravity?
  100. Minimal spin connection, and the standard content of GR