5 citations · 20 across the 13 of their papers we have counts for
13 papers
Collective coordinates method in relativistic theory
Avtandil Shurgaia
A field theoretical perturbation theory in inverse powers of coupling constant is developed which is manifestly covariant in every order of the expansion. A dilatation operator ser…
The Hagedorn-type structure of the non-perturbative gluon pressure within the mass gap approach to QCD
V. Gogokhia, A. Shurgaia, M. Vasuth
We have shown in detail that the low-temperature expansion for the non-perturbative gluon pressure has the Hagedorn-type structure. Its exponential spectrum of all the effective gl…
Analytic description of SU(3) lattice thermodynamics in the whole temperature range within the mass gap approach
V. Gogokhia, A. Shurgaia, M. Vasúth
A general approach how to analytically describe and understand lattice thermodynamics in the whole temperature range is formulated and used. It is based on th…
Quantization of Scalar Field Theory with Internal Symmetry
Avtandil Shurgaia
A simple theoretical model of scalar fields in one spatial dimension with internal symmetry is considered. Assuming the existence of localized classical field configurations, the S…
Quantum Properties of Periodic Instantons on a Circle
Avtandil Shurgaia
Quantum properties of a (1+1)-dimensional scalar theory on a cylinder with a compact spatial part, namely, , are considered. In particular, quantum theory around the…
The non-perturbative analytical equation of state for the gluon matter. I
V. Gogokhia, M. Vasúth
The effective potential approach for composite operators has been generalized to non-zero temperatures in order to derive equation of state for the pure SU(3) Yang-Mills fields fro…
Space Symmetries and Quantum Behavior of Finite Energy Configurations in SU(2)-Gauge Theory
A. V. Shurgaia, H. J. W. Mueller-Kirsten
The quantum properties of localized finite energy solutions to classical Euler-Lagrange equations are investigated using the method of collective coordinates. The perturbation theo…
Functional Relation of interquark potential with interquark distance
D. K. Park, H. J. W. Müller-Kirsten, A. V. Shurgaia
The functional relation between interquark potential and interquark distance is explicitly derived by considering the Nambu--Goto action in the background. It is…
Finite Temperature Tunneling and Phase Transitions in SU(2)-Gauge Theory
A. V. Shurgaia, H. J. W. Mueller-Kirsten, J. -Q. Liang +1
A pure Yang-Mills theory extended by addition of a quartic term is considered in order to study the transition from the quantum tunneling regime to that of classical, i.e. thermal,…
Instanton-Sphaleron transition in the d = 2 Abelian-Higgs model on a Circle
D. K. Park, H. J. W. Müller-Kirsten, J. -Q. Liang +1
The transition from the instanton-dominated quantum regime to the sphaleron-dominated classical regime is studied in the abelian-Higgs model when the spatial coordinate is co…
Nucleation at finite temperature beyond the superminispace model
J. -Q. Liang, H. J. W. Mueller-Kirsten, D. K. Park +1
The transition from the quantum to the classical regime of the nucleation of the closed Robertson-Walker Universe with spacially homogeneous matter fields is investigated with a pe…
Periodic Bounce for Nucleation Rate at Finite Temperature in Minisuperspace Models
J. -Q. Liang, H. J. W. Müller-Kirsten, Y. -B. Zhang +3
The periodic bounce configurations responsible for quantum tunneling are obtained explicitly and are extended to the finite energy case for minisuperspace models of the Universe. A…
Calculation of Spin Tunneling Effects in the Presence of an Applied Magnetic Field
J. -Q. Liang, H. J. W. Mueller-Kirsten, A. V. Shurgaia +1
The tunneling splitting of the energy levels of a ferromagnetic particle in the presence of an applied magnetic field - previously derived only for the ground state with the path i…