Hybrid model for QCD deconfining phase boundary

Abstract

Intensive search for a proper and realistic equations of state (EOS) is still continued for studying the phase diagram existing between quark gluon plasma (QGP) and hadron gas (HG) phases.Lattice calculations provide such EOS for the strongly interacting matter at finite temperature (T ) and vanishing baryon chemical potential (µ B ). These calculations are of limited use at finite µ B due to the appearance of notorious sign problem. In the recent past, we had constructed a hybrid model description for the QGP as well as HG phases where we make use of a new excluded-volume model for HG and a thermodynamically-consistent quasiparticle model for the QGP phase and used them further to get QCD phase boundary and a critical point. Since then many lattice calculations have appeared showing various thermal and transport properties of QCD matter at finite T and µ B = 0. We test our hybrid model by reproducing the entire data for strongly interacting matter and predict our results at finite µ B so that they can be tested in future. Finally we demonstrate the utility of the model in fixing the precise location, the order of the phase transition and the nature of CP existing on the QCD phase diagram. We thus emphasize the suitability of the hybrid model as formulated here in providing a realistic EOS for the strongly interacting matter.

Electrical conductivity of an anisotropic quark gluon plasma: A quasiparticle approach

“…We have used the quasiparticle description to define the basic properties of QGP since earlier we have shown that quasiparticle description provides the proper and realistic thermodynamical and transport behaviour of QGP phase [23,24]. We want to provide the correct temperature dependence of σ el since it is not yet established.…”

Strain Engineering of the Berry Curvature Dipole and Valley Magnetization in Monolayer MoS2

“…1(a)). Such valley-dependent Berry curvature gives rise to intriguing phenomena [10,11] such as the valley optical selection rule [12][13][14], the valley Zeeman effect [15][16][17][18] and the valley Hall effect [19][20][21]. Further manipulation of electrically induced valley magnetization has been demonstrated by lowering the crystal symmetries of TMDs by strain [21], but the dependence on strain yet remains unclear.…”

Correlation corrections to the thermodynamic properties of spin-asymmetric QGP matter

“…[30,[38][39][40]. Several attempts have also been made to study the EOS for interacting QCD matter [31,32,34,36,41,42]. For example, new lattice results for the equation of state of QCD with 2 + 1 dynamical flavors were obtained in [41,42].…”

“…Ref. [36] deals with hybrid model in constructing a deconfining phase boundary between the hadron gas and the QGP and provides a realistic EOS for the strongly interacting matter. Furthermore, in [31,32] the author have studied the thermodynamic properties of weakly interacting unpolarized QGP matter by using a MIT bag model within one gluon exchange (OGE) interaction.…”