KnowraTime-reversal symmetryLinked fromLinked fromThe 11 pages that link to Time-reversal symmetry, each with the reason it gives.All 11Related 7Narrower topic 1Compared with 3Charge conjugationCompared with: It changes the time coordinate rather than internal particle charges.Parity violationRelated: The CPT theorem links its status to CP symmetry, not parity symmetry alone.Arrow of timeCompared with: Many fundamental laws have this symmetry even though everyday processes do not.Topological insulatorRelated: It protects boundary states against certain nonmagnetic perturbations.Loschmidt's paradoxNarrower topic: Reversibility supplies the microscopic trajectories that seem to contradict macroscopic entropy increase.Microscopic reversibilityRelated: It underlies the equality between equilibrium molecular trajectories and their reversals.Kramers' theoremRelated: The theorem requires the system's Hamiltonian to be invariant under this symmetry.Symmetry in quantum mechanicsRelated: Its antiunitary action imposes constraints on spectra and state degeneracies.Entropy as an arrow of timeRelated: Its survival in microscopic laws makes the macroscopic arrow a puzzle.Evolution (physics)Compared with: Time-reversal symmetry concerns whether reversed histories obey the same laws, not merely forward evolution.Val Logsdon FitchRelated: Under CPT symmetry, CP violation entails corresponding time-reversal violation.