The turbulent thermal convection on the Sun is an example of an irreversible non-equilibrium phenomenon in a quasi-steady state characterized by a continuous entropy production rate. Here, the statistical features of a proxy of the local entropy production rate, in solar quiet regions at different timescales, are investigated and compared with the symmetry conjecture of the steady-state fluctuation theorem by Gallavotti and Cohen. Our results show that solar turbulent convection satisfies the symmetries predicted by the fluctuation relation of the Gallavotti and Cohen theorem at a local level.
Viavattene, G., Consolini, G., Giovannelli, L., Berrilli, F., Del Moro, D., Giannattasio, F., et al. (2020). Testing the steady-state fluctuation relation in the Solar photospheric convection. ENTROPY, 22(7), 716 [10.3390/e22070716].
Testing the steady-state fluctuation relation in the Solar photospheric convection
Giovannelli, L;Berrilli, F;Del Moro, D;Giannattasio, F;Penza, V;
2020-01-01
Abstract
The turbulent thermal convection on the Sun is an example of an irreversible non-equilibrium phenomenon in a quasi-steady state characterized by a continuous entropy production rate. Here, the statistical features of a proxy of the local entropy production rate, in solar quiet regions at different timescales, are investigated and compared with the symmetry conjecture of the steady-state fluctuation theorem by Gallavotti and Cohen. Our results show that solar turbulent convection satisfies the symmetries predicted by the fluctuation relation of the Gallavotti and Cohen theorem at a local level.File | Dimensione | Formato | |
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