After briefly reviewing the general debate on the direction of time, Kian Salimkhani notes that CP violation is a key feature of our best physical theory which also has large-scale explanatory import regarding the matter–anti-matter asymmetry of the universe. Salimkhani then investigates how CP violation may help explain the directionality of time. Salimkhani argues that accounts à la Maudlin, which posit an intrinsic fundamental direction of time, are not convincing and instead proposes using recent results from work on the dynamical approach to relativity theory: if matter field symmetries are more fundamental than spatiotemporal symmetries, the established (fundamental) directionality of the former may explain the (derivative) directionality of the latter.
Read the open access publication in the British Journal for Philosophy of Science by Kian Salimkhani: A Dynamical Perspective on the Direction of Time.
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