Conveners
Workshop on Lattice and Condensed Matter Physics
- Savvas Zafeiropoulos (University of Heidelberg, Germany)
Workshop on Lattice and Condensed Matter Physics
- Oleg Sushkov (University of New South Wales)
Workshop on Lattice and Condensed Matter Physics
- There are no conveners in this block
Workshop on Lattice and Condensed Matter Physics
- Semeon Valgushev (Brookhaven National Laboratory)
Workshop on Lattice and Condensed Matter Physics
- Vitaly Bornyakov (IHEP)
Workshop on Lattice and Condensed Matter Physics
- Roman Rogalev (Institute for High Energy Physics of NRC Kurchatov Institute (R)
Workshop on Lattice and Condensed Matter Physics
- Dominik Smith
Workshop on Lattice and Condensed Matter Physics
- Dominic Smith (University of Bristol (GB))
It is well known that in the absence of interactions the quantum Hall (QHE) conductivity in the presence of constant magnetic field is expressed through the topological TKNN invariant. The same invariant is responsible for the intrinsic anomalous quantum Hall effect (AQHE), which, in addition, may be represented as one in momentum space composed of the two point Green function. We propose the...
Results of the study of the confinement - deconfinement transition in lattice SU(2) QCD at large quark density and zero temperature are presented. At $\mu_q$ about 1000 MeV we observe vanishing of the string tension indicating confinement - deconfinement transition. We further present results of the deconfinement phase properties study.
We discuss the tight-binding models of solid state physics with the $Z_2$ sublattice symmetry in the presence of elastic deformations, and their important particular case - the tight binding model of graphene. In order to describe the dynamics of electronic quasiparticles we explore Wigner-Weyl formalism. It allows to calculate the two-point Green function in the presence of both slowly...
We develop Wigner - Weyl formalism for the lattice models. For the definiteness we consider Wilson fermions in the presence of U(1) gauge field. The given technique reduces calculation of the two point fermionic Green function to solution of the Groenewold equation. It relates Wigner transformation of the Green function with the Weyl symbol Q_W of Wilson Dirac operator. We derive the simple...
We show that the properties of the layered phase of anisotropic gauge theories provide insights into the properties of topological insulators and provide useful computational tools for their quantitative description.
We propose that ordinary semiconductors with large spin-orbit coupling, such as GaAs, can host stable, robust, and tunable topological states in the presence of quantum confinement and superimposed potentials with hexagonal symmetry.
We show that the electronic gaps which support chiral spin edge states can be as large as the electronic bandwidth in the heterostructure miniband.
[1] O. P....
It was recently shown that the BCS formalism leads to several solutions for the energy gap and the equilibrium quasiparticle distribution (D. V. Anghel, Physica A 464, 74, 2016; ibid. Physica A 2019). While this became quite obvious when the attraction band (which is the single-particle energy interval in which the pairing interaction is manifested) is asymmetric with respect to the chemical...
The light-cone definition of Parton Distribution Functions (PDFs) does not allow for a direct ab initio determination employing methods of Lattice QCD simulations that naturally take place in Euclidean spacetime. In this presentation we focus on pseudo-PDFs where the starting point is the equal time hadronic matrix element with the quark and anti-quark fields separated by a finite distance. We...
We report the results of Quantum Monte Carlo (QMC) simulations of graphene at large-scale lattices. In our study we accessed small enough temperatures and momenta to confirm the logarithmic divergence of the Fermi velocity at low energies in the non-perturbative regime. It appears that our QMC results lie in between predictions made by one-loop lattice perturbation theory (which substantially...
Longitudinal and transverse gluon propagators are investigated in QC_2D at high baryon density and zero temperature as functions of the baryon chemical potential and momentum. A particular attention is concentrated on the region of the confinement-deconfinement transition recenly found in this model. The behavior of electric and magnetic screening masses is discussed.
Graphene, a system of carbon atoms arranged on a two dimensional hexagonal lattice, has been the subject of intense theoretical and experimental research in the past decade, due to its unique electronic properties. The special symmetries of its electronic band structure lead to an effective description in terms of a massless Dirac field, and strong inter-electron interactions, which can be...
We numerically study finite volume effects on transport properties of chiral fermions. To this end, we compute anomalous transport coefficients in linear response approximation, both in continuum and on the lattice using Wilson-Dirac and Overlap fermions. We analyze stability of plasma of chiral (lattice) fermions coupled to dynamical gauge fields and find that finite volume effects...
We consider a model of an artificial neural network that uses quantum-mechanical particles in a two-humped potential as a neuron. To simulate such a quantum-mechanical system the Monte-Carlo integration method is used. A form of the self-potential of a particle and two potentials (exciting and inhibiting) interaction are proposed. The possibility of implementing the simplest logical elements,...
