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The Physical Concept of Time
The Thermodynamical Arrow of Time
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absorber according analogy approximation assumed assumption big crunch black hole Boltzmann's Chap classical collapse concept of relevance considered constant coordinates correlations corresponding cosmic cosmological cosmological constant defined degrees of freedom density matrix derived described discussed in Sect distribution dynamics Einstein electromagnetic energy ensemble entropy equivalent Everett example expansion field theory finite formal Friedmann fundamental gravity Hamiltonian Hawking radiation homogeneous horizon hypersurface improbable initial conditions interaction interpretation irrelevant irreversible leads light cone Liouville Liouville equation Mach's principle macroscopic master equation matter means measurement metric mini-superspace motion observer orbits parameter particles phase space phase transition phenomenological physical potential probability quantization quantum mechanical quantum theory radiation represent result retarded Schrodinger equation Schwarzschild Second Law singularity solution spacetime statistical stofizahlansatz symmetry T-symmetric theorem thermal thermodynamical arrow time-reversed tion universe vacuum valid value problem vanishing variables wave function wave packets Weyl tensor Zwanzig projection