Positivity of QCD at asymptotic density
| dc.creator | Hong, Deog Ki | |
| dc.date | 2003-01-17 | |
| dc.date.accessioned | 2026-07-07T03:49:03Z | |
| dc.date.available | 2026-07-07T03:49:03Z | |
| dc.description | In this talk, I try to show that the sign problem of dense QCD is due to modes whose frequency is higher than the chemical potential. An effective theory of quasi-quarks near the Fermi surface has a positive measure in the leading order. The higher-order corrections make the measure complex, but they are suppressed as long as the chemical potential is sufficiently larger than $Λ_{\rm QCD}$. As a consequence of the positivity of the effective theory, we can show that the global vector symmetries except the U(1) baryon number are unbroken at asymptotic density. | |
| dc.description | 6 pages, no figures, contribution to Strong and Electroweak Matter '02 (Heidelberg) | |
| dc.identifier | https://arxiv.org/abs/hep-ph/0301125 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/0301125 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/42253 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Positivity of QCD at asymptotic density | |
| dc.type | text |