Llanes Estrada, Felipe JoséMartínez Carmona, BelénMuñoz Martínez, José L.2023-06-182023-06-182016-020218-301310.1142/S0218301316500099https://hdl.handle.net/20.500.14352/24428© 2016 World Scientific Publishing Co Pte Ltd. The work of FJLE relied on the Spanish Excellence Network on Hadronic Physics FIS2014-57026-REDT, and grants UCM:910309, MINECO:FPA2014-53375-C2-1-P. He also thanks the Department of Energy's Institute for Nuclear Theory at the University of Washington for its partial support and hospitality, particularly George Bertsch for advising on the manuscript.We propose event by event velocity fluctuations of nuclear fission fragments as an additional interesting observable that gives access to the nuclear temperature in an independent way from spectral measurements and relates the diffusion and friction coefficients for the relative fragment coordinate in Kramers-like models (in which some aspects of fission can be understood as the diffusion of a collective variable through a potential barrier). We point out that neutron emission by the heavy fragments can be treated in effective theory if corrections to the velocity distribution are needed.engjournal articlehttp://dx.doi.org/10.1142/S0218301316500099http://www.worldscientific.comhttp://www.arxiv.org/pdf/1511.06089v1open access53Fluctuation-dissipation theorem in nuclear physicsVelocity of fragmentsNeutron emission in fissionHeavy fragment effective theory.Física (Física)22 Física