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Phase diagram of hot and dense QCD constrained by the Statistical Model
High Energy Physics - Phenomenology · Submitted 14 Jun 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim Our results favor a phase diagram with the chiral phase transition located at slightly higher temperature than deconfinement.
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The abstract, sentence by sentence
We propose a prescription to constrain the chiral effective model approach to the QCD phase diagram using the thermal Statistical Model, which is a description consistent with the experimental data at the freeze-out. In the transition region where thermal quantities of hadrons blow up, deconfined quarks and gluons should smoothly take over the degrees of freedom from hadrons in the Statistical Model. We use the Polyakov-loop coupled Nambu--Jona-Lasinio (PNJL) model as an effective description in the quark side. We require that the validity regions of these descriptions should have an overlap on the phase diagram, which constrains model uncertainty. Our results favor a phase diagram with the chiral phase transition located at slightly higher temperature than deconfinement.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We propose a prescription to constrain the chiral effective model approach to the QCD phase diagram using the thermal Statistical Model, which is a description consistent with the experimental data at the freeze-out. | contribution 0.96 | 0.85 | 0.10 | asserted 0.71 |
| s1 | In the transition region where thermal quantities of hadrons blow up, deconfined quarks and gluons should smoothly take over the degrees of freedom from hadrons in the Statistical Model. | method 0.59 | 0.12 | 0.05 | asserted 0.70 |
| s2 | We use the Polyakov-loop coupled Nambu--Jona-Lasinio (PNJL) model as an effective description in the quark side. | method 0.99 | 0.67 | 0.03 | asserted 0.99 |
| s3 | We require that the validity regions of these descriptions should have an overlap on the phase diagram, which constrains model uncertainty. | method 0.89 | 0.73 | 0.09 | asserted 0.99 |
| s4 | Our results favor a phase diagram with the chiral phase transition located at slightly higher temperature than deconfinement. | result 0.99 | 0.95 | 0.78 | hedged possibility 0.59 |
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The paper
Original abstract
We propose a prescription to constrain the chiral effective model approach to the QCD phase diagram using the thermal Statistical Model, which is a description consistent with the experimental data at the freeze-out. In the transition region where thermal quantities of hadrons blow up, deconfined quarks and gluons should smoothly take over the degrees of freedom from hadrons in the Statistical Model. We use the Polyakov-loop coupled Nambu--Jona-Lasinio (PNJL) model as an effective description in the quark side. We require that the validity regions of these descriptions should have an overlap on the phase diagram, which constrains model uncertainty. Our results favor a phase diagram with the chiral phase transition located at slightly higher temperature than deconfinement.
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References
How the literature uses it
12 arXiv papers cite this in 16 sentences
Papers citing it · 13 sentences without a confident label
Cites it as background 3 papers
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In theoretical aspects, the freeze-out conditions have been studied in Dyson-Schwinger equations (DSE) approach [ref] , functional renormalization group (FRG) approach [ref] , lattice QCD simulations [ref] , statistical hadronization models [ref] and other models [ref] .
Chemical freeze-out parameters via functional renormalization group approach · introduction · 0.95
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On the other hand, very recently the $μ$-dependence of $T_0$ has been estimated by constraining PNJL results with those in the statistical model [ref] .
The phase structure of the Polyakov--quark-meson model beyond mean field · Introduction · 0.86
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While effective field theories need to be employed to model QCD in the strongly interacting regime for finite $μ_b$ [ref] , QCD calculations on the lattice are an increasingly reliable approach for $μ_b≃0$.
Interacting hadron resonance gas meets lattice QCD · Introduction · 0.83
What it cites · 10 sentences without a confident label
Uses the method or tool of 1 paper
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We shall utilize the open code THERMUS ver.2.1 to calculate $s$ and $n$ at various $T$ and $$ [ref] .
THERMUS -- A Thermal Model Package for ROOT · Introduction · 1.00
Cites as background 3 papers
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It is an important question how our phenomenological input [ref] is validated/invalidated from the first-principle QCD calculation, which will be answered by future developments in the functional renormalization group method [ref] .
On the relation of quark confinement and chiral symmetry breaking · Introduction · 0.83
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*Introduction Exploration of the QCD (Quantum Chromodynamics) phase diagram, particularly toward higher baryon-density regime, is of increasing importance in both theoretical and experimental sides [ref] .
The phase diagram of dense QCD · Introduction · 1.00
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However, to complete our analysis it should be necessary to think of the quarkyonic spiral [ref] , which is an important future problem.
Quarkyonic Chiral Spirals · Introduction · 0.81
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