On the role of gravity in the quantum foundations of thermodynamics: a two-particle simulation of nonunitary Newtonian gravity.

Scelza G., Maimone F., Naddeo A.

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III - Astrofisica
Aula 32B-3 - Giovedì 20 h 16:30 - 19:00
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A first step is carried out in demonstrating the ability of our nonunitary Newtonian Gravity model to reproduce a gravity-induced relaxation towards thermodynamic equilibrium even for a perfectly isolated system. We consider a system of two particles within a harmonic trap, interacting via a delta-like potential and an ordinary Newtonian term. Starting from an energy eigenstate, it is shown via numerical simulations that, while energy expectation remains constant, a slow net variation of the von Neumann entropy for the system as a whole takes place, with a small modulation induced on the relative entanglement entropy of the two particles.

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