Strongly interacting (QCD) matter is expected to exhibit a
multifaceted phase structure: a hadron gas at low temperatures, a
quark-gluon plasma at very high temperatures, nuclear matter in the
low-temperature and high-density region, color superconductors at
high densities. Most of the conjectured phases cannot yet be
scrutinized by experiments but are based on model calculations.
This monograph investigates the phases of QCD using a nonlocal
covariant extension of the Nambu und Jona-Lasinio (NJL) model. This
allows one to take into account the running of the QCD coupling
strength at high and instanton physics at low energy scales. Gluon
dynamics is implemented at finite temperatures and densities by
coupling the nonlocal NJL model to a gluonic background field
(expressed in terms of the Polyakov loop P). The thermodynamics of
the resulting PNJL model describes both the chiral and the
color-deconfinement transition. We obtain results in mean-field
approximation, and extend them by including mesonic contributions
to thermodynamic quantities. The phase-diagram region of finite
density is investigated. A derivation of the nonlocal PNJL model
from QCD first principles is also given.
General
Imprint: |
Sudwestdeutscher Verlag Fur Hochschulschriften AG
|
Country of origin: |
United States |
Release date: |
September 2010 |
First published: |
September 2010 |
Authors: |
Thomas Hell
|
Dimensions: |
229 x 152 x 10mm (L x W x T) |
Format: |
Paperback - Trade
|
Pages: |
172 |
ISBN-13: |
978-3-8381-2046-1 |
Categories: |
Books >
Science & Mathematics >
Physics >
Nuclear structure physics
|
LSN: |
3-8381-2046-9 |
Barcode: |
9783838120461 |
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