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A Possible Quantum Violation To The Second Law Of Thermodynamics

If you want something to be mad at for your hard luck in physics, there’s no better contestant than the 2nd law of thermodynamics. Stuff breaking down, getting old, and even death depend on that physical law, which explains that the entropy of the universe or cosmos inclines to increase.

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Scientists from the Argonne National Laboratory considered the second law in the quantum world and were able to re-formulate a key theorem according to the rules of the quantum mechanism. While doing so, they discovered that the theorem allowed for a quantum violation of the second law of thermodynamics.
The scientists worked on a branch of science known as called quantum information, which takes information theory, mathematics applied to communication, to the quantum stage. Information and entropy show strangely similar formulas and researchers in work in either field have been using heavily for each other. One of these formulae is the H-theorem, which proves that it is possible to see an irreversible rise in entropy from a reversible procedure. Just like, if you open your front door or window, eventually the air in your house will be at the similar temperature as the air outside your house. The only way to restore a difference in temperature is to apply energy in doing so.

The team of scientists was able to express a quantum information theory of entropy and observed at what would happen if it was practically applied to solids or liquids.

Co-author Ivan Sadovskyy from Argonne National Laboratory (ANL) said, in a statement, "This allowed us to express the quantum H-theorem as it is connected to things that could be actually observed. It creates a connection between well- recognized quantum physics developments and the theoretical quantum passages that structure quantum information theory."

The exploration is published in Scientific Reports, and it demonstrates that the H-theorem might be violated under certain situations.

Since our first knowledge of the Second Law of Thermodynamics, scientists have been working to find violations and exceptions, like the well-known thought experiment called as Maxwell’s demon. In the house door example, the demon would be a doorkeeper allowing only molecules of a certain temperature in or out, making guaranteed that the house and the rest of the world stay at different temperatures.

Co-author Valerii Vinokur also from Argonne National Laboratory (ANL) said, "Though the violation is only on the local level, the inferences are far-reaching. This delivers us a platform for the practical understanding of a quantum Maxwell's demon, which could make promising a local quantum continuous motion mechanism."



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