Stochastic background of relic gravitons in a bouncing quantum cosmological model

Journal Article · Thu Nov 01 00:00:00 EDT 2012 · Journal of Cosmology and Astroparticle Physics

DOI:https://doi.org/10.1088/1475-7516/2012/11/054· OSTI ID:22279883

Bessada, Dennis ^[1]; Pinto-Neto, Nelson; Siffert, Beatriz B. ^[2]

---

1. UNIFESP, Universidade Federal de São Paulo, Laboratório de Física Teórica e Computação Científica, Rua São Nicolau, 210, 09913-030, Diadema, SP (Brazil)
2. ICRA — CBPF, Centro Brasileiro de Pesquisas Físicas, Rua Dr. Xavier Sigaud, 150, Urca, 22290-180, Rio de Janeiro (Brazil)

The spectrum and amplitude of the stochastic background of relic gravitons produced in a bouncing universe is calculated. The matter content of the model consists of dust and radiation fluids, and the bounce occurs due to quantum cosmological effects when the universe approaches the classical singularity in the contracting phase. The resulting amplitude is very small and it cannot be observed by any present and near future gravitational wave detector. Hence, as in the ekpyrotic model, any observation of these relic gravitons will rule out this type of quantum cosmological bouncing model.

• OSTI ID: 22279883
• Journal Information: Journal of Cosmology and Astroparticle Physics, Vol. 2012, Issue 11; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
COSMIC DUST
COSMOLOGICAL MODELS
COSMOLOGY
ENERGY SPECTRA
GRAVITATIONAL WAVE DETECTORS
GRAVITONS
SINGULARITY
STOCHASTIC PROCESSES
UNIVERSE