Gauge theory in de Sitter space-time from a holographic model
| dc.creator | Ghoroku, Kazuo | |
| dc.creator | Ishihara, Masafumi | |
| dc.creator | Nakamura, Akihiro | |
| dc.date | 2006-09-22 | |
| dc.date | 2006-11-24 | |
| dc.date.accessioned | 2026-07-07T11:07:16Z | |
| dc.date.available | 2026-07-07T11:07:16Z | |
| dc.description | Yang-Mills theory with flavor quarks in the dS${}_4$ is studied through the dual supergravity in the AdS${}_5\times S^5$ background with non-trivial dilaton and axion. The flavor quarks are introduced by embedding a probe D7 brane. We find that the dynamical properties of YM theory in the dS${}_4$ are similar to the case of the finite temperature theory given by the 5d AdS-Schwarzschild background. In the case of dS${}_4$, however, contrary to the finite temperature case, the gauge field condensate plays an important role on the dynamical properties of quarks. We also give the quark-antiquark potential and meson spectra to find possible quark-bound states. And we arrive at the conclusion that, while the quarks are not confined in the dS${}_4$, we could find stable meson states at very small cosmological constant as expected in the present universe. But there would be no hadrons at early universe as in the inflation era. | |
| dc.description | 22 pages, 23 figures (.eps) | |
| dc.identifier | https://arxiv.org/abs/hep-th/0609152 | |
| dc.identifier | http://arxiv.org/abs/hep-th/0609152 | |
| dc.identifier | Phys.Rev.D74:124020,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.74.124020 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/189786 | |
| dc.subject | High Energy Physics - Theory | |
| dc.title | Gauge theory in de Sitter space-time from a holographic model | |
| dc.type | text |