Does CP Violation Influence Entropy Through Altered Thermal Radiation?

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    Cp violation Entropy
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Discussion Overview

The discussion revolves around the potential influence of CP violation on entropy through altered thermal radiation. Participants explore the implications of T-violation on thermal equilibrium and the behavior of particles in thermal baths, considering both theoretical and conceptual aspects of the topic.

Discussion Character

  • Exploratory
  • Debate/contested
  • Conceptual clarification
  • Technical explanation

Main Points Raised

  • One participant suggests that CP violation leads to T-violation, which in turn breaks Kirchhoff's law of thermal radiation, affecting the thermal equilibrium of a body in contact with T-violating particles.
  • Another participant questions whether the rates of absorption and emission of T-violating particles and antiparticles would indeed differ, implying a potential balance.
  • A participant argues that the transition probability in quantum physics is influenced by both the probability amplitude and phase-space factors, with the latter being dominant in thermodynamic processes.
  • There is a suggestion that it might be possible to create a perpetuum mobile of the second kind, although this is debated and considered potentially limited to small mesoscopic systems.
  • A later reply raises a question about the relationship between phase space partitioning and the Standard Model (SM), inquiring whether the structure of the SM defines this partitioning and if it is considered a form of information.

Areas of Agreement / Disagreement

Participants express differing views on the implications of T-violation on thermal radiation and entropy, with no consensus reached on whether the effects of T-violation are significant enough to alter thermal equilibrium in a meaningful way. The discussion remains unresolved regarding the potential for perpetuum mobile systems and the relationship between phase space and the Standard Model.

Contextual Notes

Participants acknowledge the complexity of the factors influencing transition probabilities and the role of phase space in thermodynamics, but do not resolve the implications of these factors in the context of CP violation and thermal radiation.

tzimie
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Please help me with my confusion.
My logic:
1. CP violation causes direct T-violation
2. T-violation breaks Kirchhoff's law of thermal radiation (imagine a rock in a thermal bath of T-violating particles, where absorption and emission rates are different). When I say "radiation", I don't mean photons, but any type of radiation.
3. Such body in thermal equilibrium with environment will become hotter or colder than environment, depending on what is more probable - absorption or emission.
4. !?
 
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Will the rock become hotter or colder than the environment? Wouldn't the rate of absorption of T-violating particles equal the emission of T-violating antiparticles?
 
Khashishi said:
WWouldn't the rate of absorption of T-violating particles equal the emission of T-violating antiparticles?

No, because you are describing the CT symmetry, which is also violated.
 
tzimie said:
3. Such body in thermal equilibrium with environment will become hotter or colder than environment, depending on what is more probable - absorption or emission.
Transition probability in quantum physics depends on two factors. One factor is the probability amplitude, which is asymmetric for absorption/emission in T-violating processes. But the other factor which you might overlook is the phase-space factor; the transition to a larger phase space is more probable. It is this second factor which is responsible for the second law in thermodynamics, and the small T-violation in the first factor cannot significantly influence the dominating effect of the second factor.
 
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Demystifier said:
Transition probability in quantum physics depends on two factors. One factor is the probability amplitude, which is asymmetric for absorption/emission in T-violating processes. But the other factor which you might overlook is the phase-space factor; the transition to a larger phase space is more probable. It is this second factor which is responsible for the second law in thermodynamics, and the small T-violation in the first factor cannot significantly influence the dominating effect of the second factor.

Agreed, but still you will be able to create perpetuum mobile of the second kind, right?
 
tzimie said:
Agreed, but still you will be able to create perpetuum mobile of the second kind, right?
Perhaps only far small mesoscopic systems.
 
with respect to post #4

Is the partition of the phase space a direct result of the SM?

If I understand correctly the apparent structure of the SM gives it a specific phase space partitioning that sets egodic probabilities, but from what is that structure defined? Is its definition considered information?
 
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