È divertentissimo leggere E.T. Jaynes, in particolare i suoi ultimi lavori. Questo passaggio è da "The Gibbs Paradox". Si può scaricare qui.

There is a school of thought which militantly rejects all attempts to point out the close relation between entropy and information, claiming that such considerations have nothing to do with energy; or even that they would make entropy subjective and it could therefore have nothing to do with experimental facts at all. We would observe, however, that the number of fish that you can catch is an objective experimental fact; yet it depends on how much subjective information you have about the behavior of fish.

Traduzione in italiano:

Esiste una corrente di pensiero che respinge con forza ogni tentativo di evidenziare la stretta relazione tra entropia e informazione, sostenendo che tali considerazioni non abbiano nulla a che fare con l’energia; o persino che renderebbero l’entropia soggettiva, e che quindi non potrebbe avere alcun legame con i fatti sperimentali. Osserviamo, tuttavia, che il numero di pesci che si possono catturare è un fatto sperimentale oggettivo; eppure dipende da quanta informazione soggettiva si possiede sul comportamento dei pesci.

#SecondLaw #SecondaLegge #Jaynes #Entropy #Fisica #Termodinamica #Thermodynamics

@fisica
@scienze

Zoomposium with Prof. Dr. Arieh Ben-Naim: “Demystifying Entropy”

He believes that we need a new fundamental understanding of the phenomenon of entropy. Entropy, which originally stems from the second law of thermodynamics, has, in Arieh's view, been misused and incorrectly transferred as a concept to other areas of physics, biology, and everyday life.

More on this at:https://open.spotify.com/episode/6l0bnl0eU0CUqmAEo8DZf7?si=wJ2EEsQ6QK2HjZMTVGsJZw

or: https://philosophies.de/index.php/2024/02/22/entzauberung-der-entropie/

#Science #Philosophy #PhysicsAndItsLimits #ScienceAndPhilosophy #entropyzero2 #InformationTheory #SecondLawOfThermodynamics #LimitsOfPhysics #Entropy #SecondLaw #Irreversibility #StatisticalMechanics #Thermodynamics #ShannonInformation #Probability #Randomness #Time #ArrowOfTime #Metaphysics #LifeSystems #Evolution #Negentropy #AriehBenNaim #EntropyDemystified #PhysicsMyths

Roger Penrose - Why Did Our Universe Begin?

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Alexander Vilenkin - Did the Universe Begin?

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Raphael Bousso - Events and the Nature of Time

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David Albert - Setting Time Aright

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"Maxwell's Demon walks into Wall Street"; seems the first line of a nerdish joke, but it's the title of a paper we uploaded today on the arXiv (cond-mat).

Though there's nothing quantum in it (yet), I've learnt a great deal from my coauthors while working on it. I think it may be also "fun" to read. Here it is:

https://arxiv.org/abs/2306.00449

#maxwelldemon #secondlaw #thermodynamics

Maxwell's Demon walks into Wall Street: Stochastic Thermodynamics meets Expected Utility Theory

The interplay between thermodynamics and information theory has a long history, but its quantitative manifestations are still being explored. We import tools from expected utility theory from economics into stochastic thermodynamics. We prove that, in a process obeying Crooks' fluctuation relations, every $α$ Rényi divergence between the forward process and its reverse has the operational meaning of the ``certainty equivalent'' of dissipated work (or, more generally, of entropy production) for a player with risk aversion $r=α-1$. The two known cases $α=1$ and $α=\infty$ are recovered and receive the new interpretation of being associated to a risk-neutral and an extreme risk-averse player respectively. Among the new results, the condition for $α=0$ describes the behavior of a risk-seeking player willing to bet on the transient violations of the second law. Our approach further leads to a generalized Jarzynski equality, and generalizes to a broader class of statistical divergences.

arXiv.org
The physics of entropy and the origin of life | Sean Carroll

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Anthony Aguirre - Gap Between Non-Life and Life

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