A5008997810- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Black Holes and Theoretical Physics
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Physics of Superconductivity and Magnetism
- Cold Atom Physics and Bose-Einstein Condensates
- Theoretical and Computational Physics
- Quantum, superfluid, helium dynamics
- Quantum chaos and dynamical systems
- Graphene research and applications
- Cosmology and Gravitation Theories
- Manufacturing Process and Optimization
- Quantum and electron transport phenomena
- Spectral Theory in Mathematical Physics
- Magnetic confinement fusion research
- Particle accelerators and beam dynamics
- Flexible and Reconfigurable Manufacturing Systems
- Advanced Chemical Physics Studies
- Atomic and Subatomic Physics Research
- Robot Manipulation and Learning
- Topological Materials and Phenomena
- Quantum many-body systems
- Nuclear physics research studies
- Characterization and Applications of Magnetic Nanoparticles
TU Dortmund University
2022-2023
Institut für Forschung und Transfer
2022
Moscow Institute of Physics and Technology
2013-2015
Institute for Theoretical and Experimental Physics
2006-2015
Far Eastern Federal University
2015
Institute for High Energy Physics
2014-2015
Lomonosov Moscow State University
2015
Kurchatov Institute
2014
Université de Tours
2011-2014
Centre National de la Recherche Scientifique
2011-2014
We report on the results of first-principles numerical study spontaneous breaking chiral (sublattice) symmetry in suspended monolayer graphene due to electrostatic interaction, which takes into account screening Coulomb potential by electrons $\ensuremath{\sigma}$ orbitals. In contrast previous simulations with unscreened potential, we find that is conducting phase unbroken symmetry. This finding agreement recent experimental Manchester group [D. C. Elias et al., Nat. Phys. 7, 701 (2011); A....
We study the effect of Coulomb interaction between charge carriers on properties graphene monolayer, assuming that strength is controlled by dielectric permittivity substrate which layer placed. To this end, we consider tight-binding model hexagonal lattice coupled to noncompact gauge field. The action latter also discretized lattice. Equilibrium ensembles field configurations are obtained using hybrid Monte Carlo algorithm. Our numerical results indicate at sufficiently strong coupling, is,...
The axial magnetic field, which couples to left- and right-handed fermions with opposite signs, may generate an equilibrium dissipationless energy flow of in the direction field even presence interactions. We report on numerical observation this effect quenched $SU(2)$ lattice gauge theory. find that deconfinement (plasma) phase grows linearly increase strength field. In confinement (hadron) is absent. Our study indirectly confirms existence chiral vortical since both these effects have same...
The critical temperature and the nature of QCD finite phase transition are determined for ${N}_{f}=2$ dynamical flavors nonperturbatively improved Wilson fermions. calculations performed on large lattices with temporal extents ${N}_{t}=12$, 10, 8, lattice spacings down to $a=0.075\text{ }\text{ }\mathrm{fm}$. We find that deconfinement chiral transitions take place at same temperature. Our results in broad agreement a second order limit. physical quark mass is found be...
We study the distribution of color electric flux three-quark system in quenched and full QCD (with ${N}_{f}=2$ flavors dynamical quarks) at zero finite temperature. To reduce ultraviolet fluctuations, calculations are done Abelian projected theory fixed to maximally gauge. In confined phase we find clear evidence for a $\mathrm{Y}$-shape tube surrounded formed by solenoidal monopole current, accordance with dual superconductor picture confinement. deconfined, high temperature monopoles cease...
We report on the direct numerical measurements of conductivity graphene monolayer. Our simulations are performed in effective lattice field theory with noncompact $3+1$-dimensional Abelian gauge fields and $2+1$-dimensional staggered fermions. The is obtained from Green-Kubo relations using maximum entropy method. find that a phase spontaneously broken sublattice symmetry rapidly decreases. For largest value coupling constant used our $g=4.5$, dc less than weak-coupling (at $g<3.5$) by at...
The vacuum type of SU(2) gluodynamics is studied using Monte-Carlo simulations in maximally Abelian (MA) gauge and Landau (LA) gauge, where the dual Meissner effect observed to work. characterized by coherence penetration lengths. Correlations between Wilson loops electric fields are evaluated order measure length both gauges. shown be fixed MA from measurements monopole density around static quark-antiquark pair. It also numerically that a dimension 2 gluon operator A^+A^-(s) has strong...
The structure of the flux-tube profile in Abelian-projected (AP) SU(2) gauge theory maximally Abelian is studied. connection between AP flux tube and classical solution U(1) dual Higgs model clarified terms path-integral duality transformation. This suggests that electric photon magnetic monopole parts Wilson loop can act as separate sources creating Coulombic solenoidal field inside a tube. conjecture confirmed by lattice simulation which shows composed these two contributions.
We study $SU(2)$ gluodynamics at finite temperature on both sides of the deconfining phase transition. create lattice ensembles using tree-level tadpole-improved Symanzik action. The Neuberger overlap Dirac operator is used to determine following three aspects vacuum structure: (i) topological susceptibility evaluated various temperatures across transition, (ii) fermion spectral density determined and found depend Polyakov loop above transition (iii) corresponding localization properties...
We investigate the confining properties of QCD vacuum with ${N}_{f}=2$ flavors dynamical quarks, and compare results quenched theory. use nonperturbatively $\mathcal{O}(a)$ improved Wilson fermions to keep cutoff effects small. focus on color magnetic monopoles. Among quantities we study are monopole density screening length, static potential profile electric flux tube. furthermore derive low-energy effective action. Marked differences between found.
We discuss some properties of the abelian monopoles in compact U(1) gauge theory and SU(2) gluodynamics both on lattice continuum.
We study QCD with two flavors of nonperturbatively improved Wilson fermions at finite temperature on the ${16}^{3}8$ lattice. determine transition lattice spacing as small $a\ensuremath{\sim}0.12$ fm, and string breaking below transition. find that static potential can be fitted by a two-state ansatz, including state two-meson state. investigate role Abelian monopoles temperature.
We report on the recent progress in theoretical and numerical studies of entanglement entropy lattice gauge theories. It is shown that concept quantum between fields two complementary regions space can only be introduced if Hilbert physical states extended a certain way. In space, partially interpreted as classical Shannon flux through boundary regions. Such an extension leads to reduction procedure which easily implemented simulations by constructing lattices with special topology. This...