Magnetic monopoles are essential ingredients for explaining the color confinement mechanism, and instantons induce chiral symmetry breaking. The magnetic monopoles and instantons are closely tied to one another in the QCD vacuum. Furthermore, the eta-prime meson is closely related to the topology of the QCD vacuum. However, it is difficult to demonstrate the relations among them by...
The lattice gauge field is decomposed into the monopole and monopoleless components after the Maximal Abelian gauge is fixed. The interaction potential between static charges is calculated for each component and their sum is compared with the full non-Abelian static potential. A good agreement is found in both SU(2) and SU(3) gluodynamics and in two-color QCD. Implications of...
Analytic dependence of the quark density on the quark chemical potential is extracted from the data simulated in lattice rergularization of QC$_2$D. It is shown that the cluster expansion model provides the best parametrization for analytic continuation of the quark density from imaginary to real values of the chemical potential. The problem of calculation of canonical partition functions and...
Compact U(1) gauge theory in 3+1 dimensions possesses the confining phase which is characterized by a linear raise of the potential between particles with opposite electric charges at sufficiently large inter-particle separation. This phenomenоn is closely related to the color confinement in non-Abelian gauge theories such as QCD. In QED the condensation of Abelian monopoles at strong gauge...
Due to the substantial progress in the development of functional approaches for the computation real-time correlation functions, new prospects have arisen to investigate diverse collective physical phenomena in the systems in a strong coupling regime. At the same time, the main problem with computations directly in Minkowski space is a complex analytical structure of correlation functions.
We...
The relativistic rotation causes a change in QCD critical temperature. Various phenomenological and effective models predict a decrease in the critical temperature in rotating QCD. Nevertheless, it follows from lattice simulations that the critical temperature in gluodynamics increases due to rotation. But in QCD the rotation acts on both gluons and fermions, and combination of these effects...
Relativistic rotation may have some impact on various properties of quark-gluon plasma. For example, lattice simulations show an increase in critical temperature of both QCD and gluodynamics due to rotation. In this report the first lattice study of an effect that rotation has on gluodynamics’ equation of state will be presented. In particular, it will be shown that rotation’s impact on free...
In this report we present the results on the study of the electromagnetic conductivity in dense quark-gluon
plasma obtained within lattice simulations with Nf=2+1 dynamical quarks. We employ stout improved
rooted staggered quarks at the physical point and the tree-level Symanzik improved gauge action.
The simulations are performed at imaginary baryon chemical potential, and the Tikhonov...
