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Table of Contents: “...Introduction -- Page and Wootters theory -- Complement of the Hamiltonian -- Time Observables in a Timeless Universe -- Thermal Equilibrium and Emergence of Time -- Quantum Spacetime -- Quantum Clocks in a Gravitational Field -- Conclusions....”

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Subject (ZB): “...Gravitation....”

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Subject (ZB): “...Gravitation....”

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Table of Contents: “...-Rindler equation -- Part II. Applications -- Chapter 6. Spherically symmetric electro-vacuum solutions: a GHP approach -- Chapter 7. Self-gravitating spheres and fluid distributions: a GHP approach -- Chapter 8. Black hole thermodynamics through the GHP...”

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Subject (ZB): “...Gravitation....”

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Table of Contents: “... Extrapolations From the Friedmann Equation -- 8 Arguments Against the Proclaimed Amount of Dark Matter -- 9 Dark Energy and the Local Hubble Expansion -- 10 Anthropic Principle and the Hubble-Lemaitre Constant -- 11 Gravitational Waves -- 12 Possible Distribution...”

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Table of Contents: “... Field Theory -- Chapter 7. Motion in a Curved Space -- Chapter 8. Gravitational waves -- Chapter 9. Feynman's Path Integrals in quantum Mechanics....”

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Table of Contents: “...) -- Part III. Cosmology -- Chapter 8. Chameleon perfect scalar field as a geometric correction in f (R) gravity (Laura L. Parrilla) -- Chapter 9. Probing the nature of cosmic strings with gravitational waves (Lara Sousa) -- Part IV. Quantum Gravity...”

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Subject (ZB): “...Gravitation....”

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Table of Contents: “... Primer -- Chapter 4. Teleparallel Gravity -- Chapter 5. Gravitational Lensing in Theories with Lorentz Invariance Violation -- Part II: Observational Effects Beyond Special and General Relativity: From Cosmic Scales, via Compact Objects to the Lab -- Chapter 6...”

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Table of Contents: “...Introduction -- Prologue: Gravitational Waves in Classical General Relativity -- Field Theory of Linearised Gravity -- Gravitational Wave Radiation from Compact Binaries -- Gravitational Memory and Soft-Graviton Theorem -- Backreaction and Dissipation...”

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Subject (ZB): “...Gravitation....”

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Subject (ZB): “...Gravitation....”

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Subject (ZB): “...Gravitation....”

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Subject (ZB): “...Gravitation....”

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