
POSITION
Professor of Chair of Quantum Field Theory and Astroparticle Physics
WORK EXPERIENCE
1994 1998
Research Fellow
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv (Ukraine)
1998 2000
Postdoctoral Research Fellow
Instituto de Física Teórica, Universidade Estadual Paulista, São Paulo (Brazil)
2001 2003
Visiting Scientist
Departamento de Física, Universidade Federal de Juiz de Fora, Juiz de Fora (Brazil)
2003 2004
Research Fellow
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv (Ukraine)
2004 2006
Research Associate
Department of Applied Mathematics, Western Science Center, University of Western Ontario, London (Canada)
2006 2011
Senior Research Fellow
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv (Ukraine)
2011 Present
Professor
Physics Faculty, Taras Shevchenko National University of Kyiv, Kyiv (Ukraine)
EDUCATION AND TRAINING
1985 1990
Master degree in Theoretical Physics
Taras Shevchenko Kyiv State University, Kyiv (Ukraine)
1993
Ph.D. in Theoretical Physics
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv (Ukraine)
2010
Doctor of Physics and Mathematics
Bogolyubov Institute for Theoretical Physics, National Academy of Sciences of Ukraine, Kyiv (Ukraine)



Dirac and Weyl semimetals, macroscopic quantum systems
Research Fields:
Physics
Previous and Current Research
By studying the transport properties of the Fermi arc surface states in Weyl semimetals, it was proved that the Fermi arc transport is dissipative due to the scattering between the surface and bulk states.
It is shown that the correct definition of the electric current in the chiral kinetic theory for Weyl materials should include the ChernSimons contribution that makes the theory consistent with the local conservation of the electric charge in electromagnetic and straininduced pseudoelectromagnetic fields.
The consistent chiral kinetic theory was used to formulate the consistent hydrodynamics for electron fluid in topological semimetals.
A novel type of current instabilities, the entropy wave instability, was found in systems with relativisticlike dispersion relation.
By studying the evolution of spinning dark matter cloud in the state of the BoseEinstein condensate with typical galactic halo mass and radius, it was shown that that while all multicharged vortex states are unstable, a singlecharged vortex soliton is extremely robust and survives during the lifetime of the Universe.
Figure 1. Lowenergy spectrum of a Weyl semimetal with two Weyl nodes of opposite chiralities (left panel) and schematic illustration of closed orbits in mixed coordinatemomentum space composed of Fermi arcs and bulk states (right panel).
Figure 2. Dynamics of a stable vortex structure in the galactic dark matter in the state of the BoseEinstein condensate. Snapshots of the 3D isosurface of the condensate density (upper row) and the normalized condensate density in the xy plane (lower row).
Future Projects and Goals

Responses of Weyl and Dirac semimetals to straininduced gauge fields and electromagnetic fields.

Electron kinetics and hydrodynamics in Weyl and Dirac semimetals.

Dynamics and properties of galactic dark matter in the state of the superfluid selfgravitating BoseEinstein condensate with nonzero angular momentum.
Methodological and Technical Expertise

Greens function method in condensed matter theory;

SchwingerDyson equations for the fermion propagator and analytic determination of their solutions;

the BetheSalpeter equation for bound states in quantum field theories;

heat kernel expansion for differential operators and the SeeleyGilkey coefficients;

dynamical symmetry breaking, effective action for order parameters;

metalinsulator transition in planar systems;

magnetic catalysis of gap generation;

the chiral magnetic effect, chiral separation effect;

electronic and transport properties of graphene;

Dirac and Weyl semimetals, topologically nontrivial Fermi arc surface states in Weyl semimetals;

chiral kinetic theory;

generation and evolution of magnetic fields in the early Universe;

electronic properties of the dice model with flat energy band;

GrossPitaevskii equation for the BoseEinstein condensate;

numerical methods of solution of ordinary and partial differential equations.
Team:
Dr. Sci. Eduard V. Gorbar
Dr. Sci. Oleksandr I. Yakimenko
Dr. Sci. Andrii I. Momot
Ph.D. Olena M. Teslyk
Ph.D. Artem V. Chumachenko
Selected Publications
1. E.V. Gorbar, V.A. Miransky, and I.A. Shovkovy, P.O. Sukhachov, Electronic properties of Dirac and Weyl semimetals, World Scientific, 504 pages, 2021.
2. P. O. Sukhachov, E. V. Gorbar, and I. A. Shovkovy, Entropy wave instability in Dirac and Weyl semimetals, Phys. Rev. Lett. 127 (2021) 176602.
3. Y.O. Nikolaieva, A.O. Olashyn, Y.I. Kuriatnikov, S.I. Vilchynskii, and A.I. Yakimenko, Stable vortex in BoseEinstein condensate dark matter, Low Temp. Phys. 47 (2021) 684.
4. I. Yatsuta, B. Malomed, and A. Yakimenko, Acoustic analog of Hawking radiation in quantized circular superflows of BoseEinstein condensates, Phys. Rev. Research 4 (2020) 043065.
5. O.I. Matsyshyn, A.I. Yakimenko, E.V. Gorbar, S.I. Vilchinskii, and V.V. Cheianov, pwave superfluidity in mixtures of ultracold Fermi and spinor Bose gases, Phys. Rev. A 98 (2018) 043620.
6. E.V. Gorbar, V.A. Miransky, I.A. Shovkovy, and P.O. Sukhachov, Nonlocal transport in Weyl semimetals in the hydrodynamic regime, Phys. Rev. B 98 (2018) 035121.
7. E.V. Gorbar, V.A. Miransky, I.A. Shovkovy, and P.O. Sukhachov, Consistent chiral kinetic theory in Weyl materials: chiral magnetic plasmons, Phys. Rev. Lett. 118 (2017) 127601.
8. E.V. Gorbar, V.A. Miransky, I.A. Shovkovy, and P.O. Sukhachov, Origin of dissipative Fermi arc transport in Weyl semimetals, Phys. Rev. B 93 (2016) 235127.
9. A.I. Yakimenko, K.O. Isaieva, S.I. Vilchinskii, and E.A. Ostrovskaya, Vortex excitation in a stirred toroidal BoseEinstein condensate, Phys. Rev. A 9 (2015) 023607.
10. A.I. Yakimenko, Y.M. Bidasyuk, M. Weyrauch, Y.I. Kuriatnikov, and S.I. Vilchinskii, Vortices in a toroidal BoseEinstein condensate with a rotating weak link, Phys. Rev. A 91 (2015) 033607.
https://www.scopus.com/authid/detail.uri?authorId=6602493497
Contacts
Prof. E.V. Gorbar
Physics faculty
Taras Shevchenko National University of Kyiv
64/13 Volodymyrska Street
01601 Kyiv
Ukraine
Phone: 38 (044) 5214577
email: gorbar@knu.ua
