A microscopic model for an emergent cosmological constant

Perez, Alejandro; Sudarsky, Daniel; Bjorken, James D.

doi:10.1142/s0218271818460021

Title: A microscopic model for an emergent cosmological constant

Journal Article · 24 July 2018 · International Journal of Modern Physics D

DOI: https://doi.org/10.1142/s0218271818460021 · OSTI ID:1490465

Perez, Alejandro ^[1]; Sudarsky, Daniel ^[2]; Bjorken, James D. ^[3]

Aix Marseille Univ, Université de Toulon, CNRS, CPT, Marseille (France)
Universidad Nacional Autónoma de México (Mexico)
SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., CA (United States)

In this work, the value of the cosmological constant is explained in terms of a noisy diffusion of energy from the low energy particle physics degrees of freedom to the fundamental Planckian granularity which is expected from general arguments in quantum gravity. The quantitative success of our phenomenological model is encouraging and provides possibly useful insights about physics at the scale of quantum gravity.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-76SF00515

OSTI ID:: 1490465

Journal Information:: International Journal of Modern Physics D, Journal Name: International Journal of Modern Physics D Journal Issue: 14 Vol. 27; ISSN 0218-2718

Publisher:: World ScientificCopyright Statement

Country of Publication:: United States

Language:: English

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Compact objects in unimodular gravity Astorga-Moreno, J. A.; Chagoya, Javier; Flores-Urbina, J. C. Journal of Cosmology and Astroparticle Physics, Vol. 2019, Issue 09 https://doi.org/10.1088/1475-7516/2019/09/005	journal	September 2019
Cosmic acceleration in unimodular gravity García-Aspeitia, Miguel A.; Martínez-Robles, C.; Hernández-Almada, A. Physical Review D, Vol. 99, Issue 12 https://doi.org/10.1103/physrevd.99.123525	journal	June 2019
Primordial Power Spectra from an Emergent Universe: Basic Results and Clarifications Martineau, Killian; Barrau, Aurélien Universe, Vol. 4, Issue 12 https://doi.org/10.3390/universe4120149	journal	December 2018
Cosmic acceleration in unimodular gravity García-Aspeitia, Miguel A.; Martínez-Robles, C.; Hernández-Almada, A. arXiv https://doi.org/10.48550/arxiv.1903.06344	text	January 2019

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