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A class of nonunitary models of Newtonian gravity and its unicity

Sergio De Filippo·Filippo Maimone
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Abstract

A class of non-Markoffian nonunitary models for Newtonian gravity is characterized as following from some rather natural hypotheses. One of such models was previously obtained as the Newtonian limit of a classically stable version of higher derivative gravity. They give rise to a mass threshold around $10^{11}$ proton masses for gravity induced localization, to a breaking of linearity and to the possible identification of thermodynamic and von Neumann entropies.

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Sergio De Filippo, Filippo Maimone. 2004-02-02. A class of nonunitary models of Newtonian gravity and its unicity. https://arxiv.org/abs/gr-qc/0402008

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