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Horizon thermodynamics and composite metrics

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons4297

Sindoni,  Lorenzo
Microscopic Quantum Structure & Dynamics of Spacetime, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1211.2731
(Preprint), 194KB

1742-6596_410_1_012140.pdf
(beliebiger Volltext), 522KB

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Zitation

Sindoni, L. (2013). Horizon thermodynamics and composite metrics. Journal of Physics: Conference Series, 410: 012140.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0010-2327-A
Zusammenfassung
We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operator. We show that due to the availability of a boundary of a boundary principle for the quantum effective action, Clausius-like relations can always be constructed. Hence, any true explanation of the thermodynamic nature of the metric tensor has to be referred to an equilibration process, associated to the presence of an H-theorem, possibly driven by decoherence induced by the pregeometric degrees of freedom, and their entanglement with the geometric ones.