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Título: | Black-hole entropy and minimal diffusion |
Autor: | Arzano, Michele; Calcagni, Gianluca CSIC ORCID | Palabras clave: | [PACS] Phenomenology of quantum gravity [PACS] Quantum aspects of black holes, evaporation, thermodynamics [PACS] Nonlinear or nonlocal theories and models |
Fecha de publicación: | 2013 | Editor: | American Physical Society | Citación: | Physical Review D - Particles, Fields, Gravitation and Cosmology 88:, 084017 (2013) | Resumen: | The density of states reproducing the Bekenstein-Hawking entropy-area scaling can be modeled via a nonlocal field theory. We define a diffusion process based on the kinematics of this theory and find a spectral dimension whose flow exhibits surprising properties. While it asymptotes four from above in the infrared, in the ultraviolet the spectral dimension diverges at a finite (Planckian) value of the diffusion length, signaling a breakdown of the notion of diffusion on a continuum spacetime below that scale. We comment on the implications of this minimal diffusion scale for the entropy bound in a holographic and field-theoretic context. © 2013 American Physical Society. | URI: | http://hdl.handle.net/10261/102853 | DOI: | 10.1103/PhysRevD.88.084017 | Identificadores: | doi: 10.1103/PhysRevD.88.084017 issn: 1550-7998 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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