Quark gluon bags as reggeons

Bugaev, K. A.; Petrov, V. K.; Zinovjev, G.

doi:10.1103/physrevc.79.054913

Cited by 28 publications

(94 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, one can expect that different physics is indicated by the sign change of the surface tension. This conclusion is supported by the results of quark gluon bags with surface tension models [6][7][8][9], by the Fisher droplet model (FDM) [10] and by the simplified statistical multifragmentation model (SMM) [15].…”

supporting

confidence: 68%

“…The role of negative surface tension coefficient. The quark gluon bags with surface tension models with the tricritical [6,7] and critical [8,9] point employ the same physical mechanism of the endpoint generation as FDM [10] and SMM [15,16] which is typical for simple liquids [10]: at the phase coexistence line the difference of bulk parts of free energy of two phases vanishes due to Gibbs criterion, whereas at the endpoint, additionally, the surface part of free energy of liquid phase disappears. However, in contrast to FDM and SMM, in which the surface tension coefficient is zero above the endpoint temperature, the quark gluon bags with surface tension models from the very beginning employ negative values of surface tension coefficient above T cep .…”

mentioning

confidence: 99%

“…As we * Electronic address: Bugaev@th.physik.uni-frankfurt.de † Electronic address: A˙Iv˙@ukr.net ‡ Electronic address: E.Nikonov@jirn.dubna § Electronic address: Vkpetrov@yandex.ru ¶ Electronic address: Sorin@theor.jinr.ru * * Electronic address: Gennady.Zinovjev@cern.ch argue the latter signals about new physics which, so far, was not investigated by the theory of ordinary liquids. Also here we discuss two kinds of exactly solvable statistical models, the quark gluon bags with surface tension models, which incorporate the existence of negative surface tension coefficient and use it to generate the tricritical [6,7] and critical [8,9] endpoint at some finite value of baryonic chemical potential.…”

mentioning

confidence: 99%

“…where p v (T ) is the bulk pressure inside a bag, σ surf (T ) is the temperature dependent surface tension coefficient, while the last term on the right hand side above is the Fisher topological term [10] which is proportional to the Fisher exponent τ = const > 1 [6][7][8][9] and V 0 ≈ 1 fm 3 is a normalization constant. Since we consider the same object then its free energies calculated as the color tube and as the cylindrical bag should be equal to each other.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Physical mechanism of the (tri)critical point generation

Bugaev

Ivanytskyi

Nikonov³

et al. 2012

Phys. Atom. Nuclei

Self Cite

View full text Add to dashboard Cite

Abstract. We discuss some ideas resulting from a phenomenological relation recently declared between the tension of string connecting the static quark-antiquark pair and surface tension of corresponding cylindrical bag. This relation analysis leads to the temperature of vanishing surface tension coefficient of the QGP bags at zero baryonic charge density as T σ = 152.9±4.5MeV. We develop the view point that this temperature value is not a fortuitous coincidence with the temperature of (partial) chiral symmetry restoration as seen in the lattice QCD simulations. Besides, we argue that T σ defines the QCD (tri)critical endpoint temperature and claim that a negative value of surface tension coefficient recently discovered is not a sole result, but should also exist in ordinary liquids at the supercritical temperatures.

show abstract

supporting

confidence: 68%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Physical mechanism of the (tri)critical point generation

Bugaev

Ivanytskyi

Nikonov³

et al. 2012

Phys. Atom. Nuclei

Self Cite

View full text Add to dashboard Cite

show abstract

“…A recent analysis of the experimental evidence for the Hagedorn spectrum can be found in [2]. Moreover, thoughts on observing Hagedorn states in experiments are given in [3] and their usage as a thermostat in [4]. Depending on the intrinsic parameters, Hagedorn states can also be used to trigger the order of the phase transition [5,6].…”

Section: Introductionmentioning

confidence: 99%

Hagedorn States and Thermalization

Greiner¹,

Noronha-Hostler²,

Noronha³

2011

Proceedings of XLIX International Winter Meeting on Nuclear Physics — PoS(Bormio 2011)

View full text Add to dashboard Cite

In recent years, Hagedorn states have been used to explain the equilibrium and transport properties of a hadron gas close to the QCD critical temperature. These massive resonances are shown to lower η/s to near the AdS/CFT limit close to the phase transition. A comparison of the Hagedorn model to recent lattice results is made and it is found that the hadrons can reach chemical equilibrium almost immediately, well before the chemical freeze-out temperatures found in thermal fits for a hadron gas without Hagedorn states.

show abstract

Asymptotic Regge trajectories of non-strange mesons

Bugaev

Nikonov

Sorin

et al. 2011

J. High Energ. Phys.

Self Cite

View full text Add to dashboard Cite

We analyze the asymptotic behavior of Regge trajectories of non-strange mesons. In contrast to an existing belief, it is demonstrated that for the asymptotically linear Regge trajectories the width of heavy hadrons cannot linearly depend on their mass. Using the data on masses and widths of ρ J −− , ω J −− , a J ++ and f J ++ mesons for the spin values J ≤ 6, we extract the parameters of the asymptotically linear Regge trajectory predicted by the finite width model of quark gluon bags. As it is shown the obtained parameters for the data set B correspond to the cross-over temperature lying in the interval 170.9-175.3 MeV which is consistent with the kinetic freeze-out temperature of early hadronizing particles found in relativistic heavy ion collisions at and above the highest SPS energy.Unexpectedly, a strong argument in favor of linear asymptotic behavior of Regge trajectories of free hadrons was given in [9] by the exactly solvable statistical model for quark gluon (QG) bags [10]. This model is named the finite width model (FWM) since it accounts for finite width of QG bags. Quite generally, the FWM demonstrates that free QG bags of mass M r ≥ M 0 ≈ 2.5 GeV that belong to the continuous mass-volume spectrum of the Hagedorn type [11] should have the mean width Γ r ∼ √ M r . Such a behavior can be provided by the asymptotically linear Regge trajectory [8,9] only. Moreover, the FWM shows that such a behavior of mean width of QG bags, but with the temperature dependent coefficient, remains valid at high temperatures.The main purpose of this work is to extract the parameters of the asymptotic Regge trajectory predicted by the FWM using the experimental data. For our analysis we take the data of ρ J −− , ω J −− , a J ++ and f J ++ mesons which are known with the highest accuracy for J ≤ 6. In contrast to the usual analysis which is restricted by searching for a connection between spin and mass of the trajectory members, we use the full Regge trajectory in the complex s-plane. This allows us to simultaneously describe the masses and widths of involved mesons. Such a task is very important nowadays since a great significance of the width of heavy resonances or bags for the realistic equation of state of strongly interacting matter [9,10,12] and for a description of the fast equilibration process of heavy baryons/antibaryons [13,14,15] and kaons/antikaons [15] in relativistic heavy ion collisions was realized only recently. Also our analysis is necessary for further development of the string model of hadrons and for improvement of such transport codes as the hadron string dynamics [16] and the UrQMD model [17] by including the finite width of heavy resonances. In addition here we would like to demonstrate that a widely spread belief [14,15,18] that the width of heavy hadronic resonances linearly depends on their mass is simply inconsistent with an existence of linear Regge trajectories.The work is organized as follows. Section 2 contains a brief analysis of the asymptotic Regge trajectory properties which demonstrates t...

show abstract

Quark gluon bags as reggeons

Cited by 28 publications

References 53 publications

Physical mechanism of the (tri)critical point generation

Physical mechanism of the (tri)critical point generation

Hagedorn States and Thermalization

Asymptotic Regge trajectories of non-strange mesons

Contact Info

Product

Resources

About