Repulsive baryonic interactions and lattice QCD observables at imaginary chemical potential

V Vovchenko, A Pasztor, Z Fodor, SD Katz, H Stoecker - Physics Letters B, 2017 - Elsevier
The first principle lattice QCD methods allow to calculate the thermodynamic observables at
finite temperature and imaginary chemical potential. These can be compared to the …

Cluster expansion model for QCD baryon number fluctuations: No phase transition at

V Vovchenko, J Steinheimer, O Philipsen, H Stoecker - Physical Review D, 2018 - APS
A cluster expansion model (CEM), representing a relativistic extension of Mayer's cluster
expansion, is constructed to study baryon number fluctuations in QCD. The temperature …

Radius of convergence in lattice QCD at finite with rooted staggered fermions

M Giordano, K Kapas, SD Katz, D Nogradi, A Pasztor - Physical Review D, 2020 - APS
In typical statistical mechanical systems the grand canonical partition function at finite
volume is proportional to a polynomial of the fugacity e μ/T. The zero of this Lee-Yang …

Reliable estimation of the radius of convergence in finite density QCD

M Giordano, A Pásztor - Physical Review D, 2019 - APS
We study different estimators of the radius of convergence of the Taylor series of the
pressure in finite density QCD. We adopt the approach in which the radius of convergence is …

Imaginary Chemical Potential, NJL-Type Model and Confinement–Deconfinement Transition

K Kashiwa - Symmetry, 2019 - mdpi.com
In this review, we present of an overview of several interesting properties of QCD at finite
imaginary chemical potential and those applications to exploring the QCD phase diagram …

[HTML][HTML] Lee-Yang zeros in lattice QCD for searching phase transition points

M Wakayama, VG Bornyakov, DL Boyda, VA Goy… - Physics Letters B, 2019 - Elsevier
Abstract We report Lee-Yang zeros behavior at finite temperature and density. The quark
number densities,< n>, are calculated at the pure imaginary chemical potential i μ q I, where …

Asymptotic behavior of the Fourier coefficients and the analytic structure of the QCD equation of state

M Bryant, C Schmidt, VV Skokov - Physical Review D, 2024 - APS
In this paper we study the universal properties of the baryon chemical potential Fourier
coefficients in quantum chromodynamics. We show that by following a well-defined strategy …

Numerical study of the Roberge-Weiss transition

VG Bornyakov, NV Gerasimeniuk, VA Goy, AA Korneev… - Physical Review D, 2023 - APS
We study the Roberge-Weiss phase transition numerically. The phase transition is
associated with the discontinuities in the quark-number density at specific values of …

Momentum space topology of QCD

MA Zubkov - Annals of Physics, 2018 - Elsevier
We discuss the possibility to consider quark matter as the topological material. We consider
hadronic phase (HP), the quark–gluon plasma phase (QGP), and the hypothetical color …

Analytic structure of thermodynamic systems with repulsive interactions

K Taradiy, A Motornenko, V Vovchenko, MI Gorenstein… - Physical Review C, 2019 - APS
Thermodynamic properties of systems with repulsive interactions are considered in the
grand-canonical ensemble. The analytic structure of the excluded-volume model in the …