
Director of ITMP
Research interests of Arkady Tseytlin include quantum field theory and quantum gravity, superstring theory, conformal theories and AdS/CFT correspondence. He obtained several key results in superstring theory and field theory. In particular, he developed the sigma model approach to string theory, discovered the fundamental role of BornInfeld action as the open string effective action, developed the method of constructing composite solitonic solutions in supergravity describing supersymmetric bound states of branes, contributed to investigations of Dbranes that led to AdS/CFT duality, constructed the action of superstings in AdS5 x S5 space and made substantial contributions to the integrabilitybased approach to gaugestring duality.

Senior Researcher
The main focus of Konstantin’s research is the AdS/CFT correspondence for QFTs with higher symmetries such as 2d CFT and HS gravity. He and collaborators pioneered studies of the framelike formulation for general free and interacting massless AdS fields, built mixedsymmetry conserved currents along with their duals, proposed higherspin extensions of the JackiwTeitelboim gravity. More recent results include the combinatorial representation for minimal CFT with W symmetry, the semiclassical AdS/CFT correspondence between higherpoint conformal blocks and geodesic trees, largeс torus CFT blocks and their duals.

Senior Researcher
My scientific interests are related to the application of geometric methods in theoretical/mathematical physics. Results are in the theory of flag manifold sigma models, integrable sigma models, as well as in the construction of Ricciflat metrics on noncompact Kähler manifolds and in the study of mathematical aspects of NekrasovShatashvili theory. In particular, I showed that certain spin chains with SU(N) symmetry are described, in a continuum limit, by flag manifold sigma models, which later on led to a formulation of the socalled generalized Haldane conjectures for such systems by I.Affleck et.al. In the theory of integrable models I formulated a conjecture about the integrability of certain models with nonsymmetric target spaces (such as flag manifolds). It was subsequently found that such models naturally fit in a general framework developed by C.Costello and M.Yamazaki and that, in fact, there is a wider class of integrable models with quiver (super)variety phase spaces, which from a physics perspective are equivalent to generalized GrossNeveu models with Bose and Fermi fields.

Senior Researcher
Scientific interests of Andrei Zotov are mainly related to the theory of integrable systems, its methods and numerous applications. A series of his papers is devoted to interrelations (dualities) between different type models. For example, an interesting correspondence was observed between the classical manybody systems and quantum spin chains. Among other issues, these type dualities allow to predict some properties for solutions of the Painleve equations, the KnizhnikZamolodchikov equations as well as many other important equations in theoretical and mathematical physics.

Postdoc
My scientific interests revolve around supergravity and string theory symmetries and dualities. I have worked on fermionic Tduality and applying it to supergravity solutions that are important from the holographic point of view. Using the supergravity formulations that are T and Uduality covariant, I have been studying properties of the ordinary and exotic branes. Main research topics at present are the YangBaxter deformations of string sigmamodels in the supergravity language, and their possible generalisations for Mtheory.

Deputy Director
Scientific interests of Maxim Grigoriev involve mathematical foundations of gauge systems (constrained dynamics and symmetries, BatalinVilkovisky quantization) higherspin gauge theories and holography, superstring sigma models and noncommutative theories. He proposed the socalled parent formulation of general gauge theories which systematically unifies BatalinVilkovisky and Hamiltonian BRST approaches into a unique formalism which has the structure of (generalized) AlexandrovKontsevichSchwartzZaboronsky (AKSZ) sigmamodel, which is especially useful in the context of diffeomorphisminvariant theories and higher spin holography.

Research Fellow
Yegor studies integrable systems, matrix models and twodimensional conformal field theories. Currently I am trying to better understand the connection between quantum toroidal algebras, gauge theories, topological strings and possible generalizations thereof.

Deputy Director
Dr. Levkov is a research fellow of ITMP and Institute for Nuclear Research RAS. His scientific interests are shared between cosmology of ultralight dark matter, black hole physics, instantons and semiclassical description of nonperturbative transitions in quantum field theory. He and his collaborators for the first time computed the probability of baryon number violation in electroweak particle collisions at colliders, were first to describe kinetic BoseEinstein condensation of light dark matter due to gravitational interactions.

Research Fellow
Scientific interests of Sergey Mironov involve the mathematical aspects of modern cosmology and gravity, including theories with higher derivatives, the AGT conjecture between gauge and conformal theories, topological field theories, especially knot theory, as well as their connection with integrable systems. In collaboration with his collegues he derived a number of formulas for universal parts of the triple functions for the W algebra. Another important result is the discovery of nogo theorems for stable classical solutions in theories of gravity with scalar fields of quite general form.

Postdoc
I am mainly interested in constructing and analyzing interacting theories of higherspin gauge fields as well as in other closely related problems of classical and quantum field theories. In particular, together with colleagues we were first to derive quartic vertices in higher spin theories from AdS/CFT correspondence and studied their locality, constructed chiral higherspin theories employing the lightcone gauge approach and established the relation of the latter theories to selfdual Yang Mills theory and sigma models, as well as computed simplest quantum corrections in higherspin theories.