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Flavour degrees of freedom and the transition temperature in QCD

Gavai, R. V. ; Gupta, Sourendu ; Irbäck, A. LU orcid ; Karsch, F. ; Meyer, S. LU ; Petersson, B. ; Satz, H. and Wyld, H. W. (1990) In Physics Letters B 241(4). p.567-573
Abstract

We study the finite temperature transition in QCD with four flavours of dynamical quarks. Our simulation is performed on an 8×16 3 lattice for quarks of mass ma=0.01. At the coupling β c =5.15, we find long-lived metastable states, as well as an abrupt change in the entropy density, suggesting a first order phase transition. Using presently available results from corresponding calculations of the hadron masses and the chiral condensate, this gives us a transition temperature T c ≅100 MeV, which is a factor two lower... (More)

We study the finite temperature transition in QCD with four flavours of dynamical quarks. Our simulation is performed on an 8×16 3 lattice for quarks of mass ma=0.01. At the coupling β c =5.15, we find long-lived metastable states, as well as an abrupt change in the entropy density, suggesting a first order phase transition. Using presently available results from corresponding calculations of the hadron masses and the chiral condensate, this gives us a transition temperature T c ≅100 MeV, which is a factor two lower than the transition temperature found in quenched QCD.

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author
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author collaboration
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters B
volume
241
issue
4
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:0000417916
ISSN
0370-2693
DOI
10.1016/0370-2693(90)91871-8
language
English
LU publication?
no
id
888621e1-7e84-483b-8406-bab80760d882
date added to LUP
2019-05-14 15:12:34
date last changed
2021-01-03 09:00:33
@article{888621e1-7e84-483b-8406-bab80760d882,
  abstract     = {{<p>                            We study the finite temperature transition in QCD with four flavours of dynamical quarks. Our simulation is performed on an 8×16                            <sup>3</sup>                             lattice for quarks of mass ma=0.01. At the coupling β                            <sub>c</sub>                            =5.15, we find long-lived metastable states, as well as an abrupt change in the entropy density, suggesting a first order phase transition. Using presently available results from corresponding calculations of the hadron masses and the chiral condensate, this gives us a transition temperature T                            <sub>c</sub>                            ≅100 MeV, which is a factor two lower than the transition temperature found in quenched QCD.</p>}},
  author       = {{Gavai, R. V. and Gupta, Sourendu and Irbäck, A. and Karsch, F. and Meyer, S. and Petersson, B. and Satz, H. and Wyld, H. W.}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{4}},
  pages        = {{567--573}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters B}},
  title        = {{Flavour degrees of freedom and the transition temperature in QCD}},
  url          = {{http://dx.doi.org/10.1016/0370-2693(90)91871-8}},
  doi          = {{10.1016/0370-2693(90)91871-8}},
  volume       = {{241}},
  year         = {{1990}},
}