Noncommutative field gas driven inflation
| dc.creator | Barosi, Luciano | |
| dc.creator | Brito, Francisco A. | |
| dc.creator | Queiroz, Amilcar R. | |
| dc.date | 2008-01-05 | |
| dc.date | 2008-03-14 | |
| dc.date.accessioned | 2026-07-07T11:55:02Z | |
| dc.date.available | 2026-07-07T11:55:02Z | |
| dc.description | We investigate early time inflationary scenarios in an Universe filled with a dilute noncommutative bosonic gas at high temperature. A noncommutative bosonic gas is a gas composed of bosonic scalar field with noncommutative field space on a commutative spacetime. Such noncommutative field theories was recently introduced as a generalization of quantum mechanics on a noncommutative spacetime. As key features of these theories are Lorentz invariance violation and CPT violation. In the present study we use a noncommutative bosonic field theory that besides the noncommutative parameter $θ$ shows up a further parameter $σ$. This parameter $σ$ controls the range of the noncommutativity and acts as a regulator for the theory. Both parameters play a key role in the modified dispersion relations of the noncommutative bosonic field, leading to possible striking consequences for phenomenology. In this work we obtain an equation of state $p=ω(σ,θ;β)ρ$ for the noncommutative bosonic gas relating pressure $p$ and energy density $ρ$, in the limit of high temperature. We analyse possible behaviours for this gas parameters $σ$, $θ$ and $β$, so that $-1\leqω<-1/3$, which is the region where the Universe enters an accelerated phase. | |
| dc.description | Reference added. Version to appear in Journal of Cosmology and Astroparticle Physics - JCAP | |
| dc.identifier | https://arxiv.org/abs/0801.0810 | |
| dc.identifier | http://arxiv.org/abs/0801.0810 | |
| dc.identifier | JCAP0804:005,2008 | |
| dc.identifier | doi:10.1088/1475-7516/2008/04/005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/205116 | |
| dc.subject | High Energy Physics - Theory | |
| dc.subject | Astrophysics | |
| dc.subject | General Relativity and Quantum Cosmology | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Noncommutative field gas driven inflation | |
| dc.type | text |