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entropy1
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I read that CP-symmetry violation occurs (or can occur) in beta decay. Does that mean that, since CPT-symmetry must hold, there is no T-symmetry?
Beta decay is a type of radioactive decay in which a nucleus releases a beta particle (either an electron or a positron) to achieve a more stable energy state.
CPT symmetry, or charge-parity-time symmetry, is a fundamental principle in physics that states that the laws of physics should be the same for particles and their antiparticles, and when time is reversed.
Beta decay and CPT symmetry are related because beta decay involves the transformation of a particle into its antiparticle, which is a violation of CPT symmetry. This violation has been observed in certain types of beta decay, providing evidence for the validity of CPT symmetry.
While CPT symmetry is a fundamental principle in physics, there have been observations of violations in certain systems and experiments. However, these violations are typically very small and are still being studied by scientists.
If CPT symmetry were to be completely violated, it would challenge our current understanding of the laws of physics and the structure of the universe. However, the current evidence suggests that CPT symmetry is a fundamental principle that holds true in the vast majority of physical phenomena.