Three merry roads to T-violation

Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52 (Part A):8-15 (2015)
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Abstract

This paper is a tour of how the laws of nature can distinguish between the past and the future, or be T-violating. I argue that, in terms of the basic argumentative structure, there are basically just three approaches currently being explored. The first is an application of Curie's Principle, together with the CPT theorem. The second route makes use of a principle due to Pasha Kabir which allows for a direct detection. The third route makes use of a Non-degeneracy Principle, and is related to the energy spectrum of elementary particles. I show how each provides a general template for detecting T-violation, illustrate each with an example, and discuss their prospects in extensions of particle physics beyond the standard model

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Bryan W. Roberts
London School of Economics

Citations of this work

Reversing the arrow of time.Bryan W. Roberts - 2022 - Cambridge: Cambridge University Press.
The gauge argument: A Noether Reason.Henrique Gomes, Bryan W. Roberts & Jeremy Butterfield - 2022 - In James Read & Nicholas J. Teh (eds.), The physics and philosophy of Noether's theorems. Cambridge: Cambridge University Press. pp. 354-377.
Weak Interactions: Asymmetry of Time or Asymmetry in Time?Jerzy Gołosz - 2017 - Journal for General Philosophy of Science / Zeitschrift für Allgemeine Wissenschaftstheorie 48 (1):19-33.
Response to Bryan Roberts: A new perspective on T violation.Abhay Ashtekar - 2015 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52 (Part A):16-20.

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References found in this work

Curie’s Principle and spontaneous symmetry breaking.John Earman - 2004 - International Studies in the Philosophy of Science 18 (2 & 3):173 – 198.
When we do (and do not) have a classical arrow of time.Bryan W. Roberts - 2013 - Philosophy of Science 80 (5):1112-1124.
The Simple Failure of Curie’s Principle.Bryan W. Roberts - 2013 - Philosophy of Science 80 (4):579-592.
Response to Bryan Roberts: A new perspective on T violation.Abhay Ashtekar - 2015 - Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics 52 (Part A):16-20.
Kramers degeneracy without eigenvectors.Bryan W. Roberts - 2012 - Physical Review A 86 (3):034103.

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