3 On the Energy-Momentum and Angular Momentum of Gravitating Systems

 3.1 On the gravitational energy-momentum and angular momentum density: The difficulties
  3.1.1 The root of the difficulties: Gravitational energy in Newton’s theory
  3.1.2 The root of the difficulties: Gravitational energy-momentum in Einstein’s theory
  3.1.3 Pseudotensors
  3.1.4 Strategies to avoid pseudotensors I: Background metrics/connections
  3.1.5 Strategies to avoid pseudotensors II: The tetrad formalism
  3.1.6 Strategies to avoid pseudotensors III: Higher derivative currents
 3.2 On the global energy-momentum and angular momentum of gravitating systems: The successes
  3.2.1 Spatial infinity: Energy-momentum
  3.2.2 Spatial infinity: Angular momentum
  3.2.3 Null infinity: Energy-momentum
  3.2.4 Null infinity: Angular momentum
 3.3 The necessity of quasi-locality for observables in general relativity
  3.3.1 Nonlocality of the gravitational energy-momentum and angular momentum
  3.3.2 Domains for quasi-local quantities
  3.3.3 Strategies to construct quasi-local quantities

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