Spectral quantities in thermal QCD: a progress report from the FASTSUM collaboration

Aarts, Gert; Allton, Chris; Glesaaen, Jonas; Hands, Simon; Jäger, Benjamin; Kim, Seyong; Lombardo, Maria Paola; Nikolaev, A.A.; Ryan, Sinéad M.; Skullerud, Jon-Ivar; Wu, Liang-Kai

doi:10.22323/1.363.0075

Cited by 10 publications

(19 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. Pseudo-critical temperatures with their chiral extrapolations: comparison with the results from the HotQCD collaboration [58], FASTSUM collaboration [59,60], Wuppertal-Budapest collaboration [61]. The purple diamond at m π = 0 marks the critical temperature [47], which compares well with our result T 0 = 134 +6 −4 MeV (light-green cross, slightly shifted for better readability).…”

Section: N F = 2 + 1 and The Physical Pointsupporting

confidence: 82%

Gliding Down the QCD Transition Line, from Nf = 2 till the Onset of Conformality

2021

View full text Add to dashboard Cite

We review the hot QCD transition with varying number of flavours, from two till the onset of the conformal window. We discuss the universality class for Nf=2, along the critical line for two massless light flavours, and a third flavour whose mass serves as an interpolator between Nf=2 and Nf=3. We identify a possible scaling window for the 3D O(4) universality class transition, and its crossover to a mean field behaviour. We follow the transition from Nf=3 to larger Nf, when it remains of first order, with an increasing coupling strength; we summarise its known properties, including possible cosmological applications as a model for a strong electroweak transition. The first order transition, and its accompanying second order endpoint, finally morphs into the essential singularity at the onset of the conformal window, following the singular behaviour predicted by the functional renormalisation group.

show abstract

Section: N F = 2 + 1 and The Physical Pointsupporting

confidence: 82%

Gliding Down the QCD Transition Line, from Nf = 2 till the Onset of Conformality

2021

View full text Add to dashboard Cite

show abstract

“…Figure 5: Pseudo-critical temperatures with their chiral extrapolations: comparison with the results from the HotQCD Collaboration [58], FASTSUM Collaboration [59,60], Wuppertal-Budapest Collaboration [61]. The purple diamond at m π = 0 marks the critical temperature [47], which compares well with our result T 0 = 134 +6 −4 MeV (light-green cross, slightly shifted for better readability).…”

Section: N F = 2 + 1 and The Physical Pointsupporting

confidence: 77%

Gliding down the QCD transition line, from $N_f=2$ till the onset of conformality

Kotov¹,

Lombardo

Trunin

2021

Preprint

View full text Add to dashboard Cite

We review the hot QCD transition with varying number of flavors, from two till the onset of the conformal window. We discuss the universality class for N f = 2, along the critical line for two massless light flavors, and a third flavor whose mass serves as an interpolator between N f = 2 and N f = 3. We identify a possible scaling window for the 3D O(4) universality class transition, and its crossover to a mean field behaviour. We follow the transition from N f = 3 to larger N f , when it remains of first order, with an increasing coupling strength; we summarize its known properties, including possible cosmological applications as a model for a strong electroweak transition. The first order transition, and its accompanying second order endpoint, finally morphs into the essential singularity at the onset of the conformal window, following the singular behaviour predicted by the Functional Renormalization Group.

show abstract

“…2 we present the determined pseudo-critical temperatures as functions of pion mass. Apart from our results we also show the results of other groups: Budapest-Wuppertal collaboration [11], HotQCD collaboration [12], FASTSUM collaboration [13,14]. Lines in Fig.…”

Section: Lattice Details and Studied Observablessupporting

confidence: 60%

“…The dependence of the pseudocritical temperature on the pion mass extracted from chiral condendsate (red circles), chiral susceptibility (greed rombi) and new order parameter (blue squares) together with fits by O(4) universality class. The results by Budapest-Wuppertal collaboration [11], HotQCD collaboration [12], FASTSUM collaboration [13,14] are also presented. Green cross indicates the estimation of the critical temperature T 0 = 134 +6 −4 MeV in the chiral limit.…”

Section: Lattice Details and Studied Observablesmentioning

confidence: 99%

Finite temperature QCD phase transition and its scaling window from Wilson twisted mass fermions

2022

View full text Add to dashboard Cite

We study the properties of finite temperature QCD using lattice simulations with Nf = 2 + 1 + 1 Wilson twisted mass fermions for pion masses from physical up to heavy quark regime. In particular, we investigate the scaling properties of the chiral phase transition close to the chiral limit. We found compatibility with O(4) universality class for pion masses up to physical and in the temperature range [120 : 300] MeV. We also discuss other alternatives, including mean field behaviour or Z2 scaling. We provide an estimation of the critical temperature in the chiral limit, T0 = 134−4+6 MeV, which is stable against various scaling scenarios.

show abstract

Spectral quantities in thermal QCD: a progress report from the FASTSUM collaboration

Cited by 10 publications

References 10 publications

Gliding Down the QCD Transition Line, from Nf = 2 till the Onset of Conformality

Gliding Down the QCD Transition Line, from Nf = 2 till the Onset of Conformality

Gliding down the QCD transition line, from $N_f=2$ till the onset of conformality

Finite temperature QCD phase transition and its scaling window from Wilson twisted mass fermions

Contact Info

Product

Resources

About