Institute for Theoretical and Mathematical Physics MSU, Lomonosovsky prospect, 27/1, offices G-716, G-721, G-722, Moscow (2026)

27/05/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, May 28, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Kirill Gubarev, Moscow Institute of Physics and Technology
Title: Polyvector deformations of supergravity solutions
Abstract: In this talk, I will present a method for generating new consistent backgrounds for string theory and M-theory. We will start by motivating this type of deformations from the study of integrability, kappa symmetry, and noncommutativity in string theory, as it historically appeared. Then we will consider an example of similar mono-vector deformations for the Einstein-Maxwell theory with a dilaton with a hidden symmetry Gl(d+1). For this theory, I will show that the deformation generates new solutions under the condition that the mono-vector is the Killing vector of the original background, and the deformation itself can be represented as a diffeomorphism in the extended space of manifestly symmetric Gl(d+1) general relativity. Then we will consider a generalization of this approach to constructing deformations of 10- and 11-dimensional supergravity solutions with polyvector parameters. I will formulate sufficient conditions on the deformation parameters to generate solutions and discuss their connection with integrability in string theory and M-theory.

If you want to join the seminar please register here before 18:00, May 28 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

21/05/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, May 21, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Rostom Karsanov, MSU
Title: Gauged supergravities: solutions with Killing tensor
Abstract: In this talk, I will discuss the full integration of the stationary axisymmetric Einstein-Maxwell-dilaton-axion (EMDA) theory with and without potential using a recently proposed generalization of Carter's approach to spacetimes beyond type D, allowing the Killing tensor. Crucial to our construction is a new parametrization of the dilaton and axion fields based on the analyticity argument. We show that the general solution in the ungauged case is asymptotically locally flat and contains two more parameters compared to EMDA black holes previously obtained using Harrison transformations. In the gauged case, the general solution is asymptotically AdS and includes flat and hyperbolic topological solutions, as well as generalization of the Kerr-Sen-AdS metric with three additional parameters.

If you want to join the seminar please register here before 18:00, May 21 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

06/05/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, May 7, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Donal O'Conell, University of Edinburgh
Title: Amplitudes for Hawking Radiation
Abstract: In recent years, ideas from quantum field theory, including effective field theory and the on-shell methods of scattering amplitude, have been successfully applied to classical gravitational-wave physics. In this talk, I will show that these ideas extend to the semiclassical case of Hawking radiation. Along the way, I will discuss the relationship between Bogoliubov coefficients and generalised amplitudes.

If you want to join the seminar please register here before 18:00, May 7 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

22/04/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Apr 23, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Mark Hertzberg, Tufts University
Title: Unitarity, Causality, and Solar System Bounds, Implications for Testing General Relativity
Abstract: In this talk I discuss prospects for testing general relativity from GW interferometers like LIGO/Virgo. Within pure gravity, the only possible way deviations can arise is from the existence of higher order derivative corrections, namely higher powers of the Riemann curvature tensor, in the effective action. However, I show that models that give rise to such effects, need very light new degrees of freedom from unitarity, and tend to have other consequences in the solar system that have not been seen. Then I discuss a class of models that are allowed by general considerations from unitarity and causality from a new light scalar, and how we might test them if neutron star mergers.

If you want to join the seminar please register here before 18:00, April 23 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

15/04/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Apr 16, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Gabriele Casagrande, CPT, École Polytechnique
Title: A unique coupling of the massive spin-2 field to supergravity
Abstract: In this talk, I will discuss the coupling of a massive spin-2 field to (undeformed) D=4, N=1 supergravity. We analyze this coupling by constructing the general stress-energy tensor multiplet for the N=1 massive spin-2 supermultiplet. We show that, at leading order in the Planck mass, this coupling is unique and characterized by a specific non-minimal coupling to the Riemann tensor. The massive spin-2 sector of this unique coupling reproduces the one of an oscillator mode in open string theory. The massive spin-1 sector, on the other hand, includes a higher-derivative term that may lead to violations of causality, which can be resolved by introducing infinitely many higher-spin fields, similar to the Regge trajectories in string theory. Moreover, we argue that this coupling is genuinely different from the one arising from Kaluza-Klein reductions of higher-dimensional supergravities, which we show leads instead to a deformation of the massless supersymmetry transformations.

If you want to join the seminar please register here before 18:00, April 16 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

09/04/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Apr 9, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Nat Levine, University of Amsterdam
Title: Demystifying integrable QFTs in AdS: No-go theorems for higher-spin charges
Abstract: Higher-spin conserved currents and charges feature prominently in integrable 2d QFTs in flat space. Motivated by the question of integrable field theories in AdS space, we consider the consequences of higher-spin currents for QFTs in AdS_2. We find that their effect is much more constraining than in flat space. Specifically, it is impossible to preserve: (a) any higher-spin charges when deforming a massive free field by interactions, or (b) any spin-4 charges when deforming a CFT by a Virasoro primary. We therefore conclude in these settings that there are no integrable theories in AdS with higher-spin conserved charges.

If you want to join the seminar please register here before 18:00, April 9 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

01/04/2025

Dear Colleagues,
We are pleased to announce the special in-person seminar of the "270th Anniversary of MSU" series will be held on Wednesday, Apr 2, 18:00 (Moscow time).

Speaker: Prof. Arkady Tseytlin, ITMP MSU
Title: Non-planar corrections in ABJM theory from quantum M2 branes
Abstract: We will review some recent work on computing non-planar corrections to anomalous dimensions in 3d superconformal Chern-Simons+matter gauge theory (ABJM model) using its connection to M-theory. A way to find the non-planar corrections is by quantizing M2 branes in AdS4 x S7 space. The validity of semiclassical quantization of M2 branes is supported by matching its results with localization results in gauge theory for supersymmetric Wilson loops and related observables.

IN PERSON DETAILS: MSU, Lomonosvkiy build., room G-725. (Г-725). Please be informed that entrance to the building requires a pass, so please bring your ID (passport). To get the pass, please inform us before the seminar starts, so that we can produce one for you. Note, that ID is required for the entrance to the building together with an pass

If you want to join the seminar please register here before 18:00, April 2 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

17/03/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Mar 19. Note the unusual timing 19:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Diksha Jain, University of Cambridge
Title: Supersymmetric Grey Galaxies, Dual Dressed Black Holes and the Superconformal Index
Abstract: In this talk, I will talk about our recent work on supersymmetric grey galaxies and dual dressed black holes in AdS^5 \times S^5. These solutions consist of a core black hole surrounded by some matter (either graviton gas or D-branes). Motivated by these solutions, we conjecture the existence of a large number of supersymmetric states for a five-parameter set of charges. We predict a microcanonical phase diagram of supersymmetric states with eleven distinct phases, and makes a sharp prediction for the supersymmetric entropy (as a function of 5 charges) in each of these phases. The microcanonical version of the superconformal index involves a sum over states - with alternating signs - over a line in 5 parameter charge space. Our second conjecture asserts that this sum is dominated by the point on the line that has the largest supersymmetric entropy. This conjecture predicts a large N formula for the superconformal index as a function of indicial charges, and predicts a microcanonical indicial phase diagram with nine distinct phases. It predicts agreement between the superconformal index and black hole entropy in one phase (so over one range of charges), but disagreement in other phases (and so at other values of charges). We compare our predictions against numerically evaluated superconformal index at N≤10, and find qualitative agreement.

If you want to join the seminar please register before 18:00, March 19 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

24/02/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Feb 26, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Maria Nocchi, University of Oxford
Title: String amplitudes in AdS: lessons from the Regge limit
Abstract: One of the earliest achievements of string theory is the Virasoro-Shapiro amplitude, which describes the tree-level scattering of four gravitons. An outstanding question is how to generalize to curved spacetimes, where a worldsheet theory is still lacking. Nonetheless, the AdS/CFT correspondence provides a powerful indirect tool for computing string amplitudes in AdS from boundary CFT correlators. In this talk, I will discuss recent progress in the "AdS Virasoro-Shapiro" program, with a focus on its Regge limit. We apply the standard ideas of Regge theory to the AdS amplitude, defined as a curvature expansion around flat space. At each order in the small-curvature expansion, we find an explicit representation as derivatives of the flat space result, with the only necessary input being the CFT data of the leading Regge trajectory. I will conclude by discussing the implications for the putative worldsheet theory and the strong evidence they provide for the proposed full amplitude.

If you want to join the seminar please register before 18:00, Feb 26 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

18/02/2025

Dear Colleagues,
We are pleased to announce the special in-person seminar of the "270th Anniversary of MSU" series will be held on Wednesday, Feb 19, 18:00 (Moscow time).

Speaker: Alexander Gorsky, Institute for Information Transmission Problems, RAS
Title: Around a quantum chaos
Abstract: I will discuss some aspects of a diagnostics of a quantum chaos. It will be argued that in quite general setting there is the late-time transition from Gauss to KPZ scaling in the autocorrelators evaluated in the Krylov basis. In the DSSYK model similar analysis yields the transition between the KPZ to superdiffusion in the fluctuations of the Krylov complexity. Other approach to identification of quantum chaos is based on the geometry of parameter space. The three regimes for the 2-dimensional parameter space in matrix models have been identified. The talk is based on 2406.02782, 2411.11968 and works in progress.

IN PERSON DETAILS: MSU, Lomonosvkiy korpus, room G-725. (Г-725). Please be informed that entrance to the building requires a pass, so please bring your ID (passport). To get the pass, please inform us before the seminar starts, so that we can produce one for you. Note, that ID is required for the entrance to the building together with a pass.

If you want to join the seminar please register before 18:00, Feb 19 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

11/02/2025

Dear Colleagues,
We are pleased to announce that the next ITMP seminar will be held on Wednesday, Feb 12, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Dr. Sabir Ramazanov, ITMP MSU
Title: Primordial gravitational waves from spontaneous breaking of discrete symmetrie
Abstract: Strong evidence in support of stochastic gravitational wave background has been found recently in pulsar timing array (PTA) measurements. I will discuss how this background can be interpreted in terms of primordial gravitational waves emitted by extended topological objects in the early Universe, i.e., domain walls. The latter generically arise in systems exhibiting spontaneous breaking of discrete symmetries. I will describe two types of domain walls depending on the nature of a vacuum expectation value responsible for the symmetry breaking. Conventional domain walls correspond to the case of a constant expectation value. Less commonly discussed is the situation, where the expectation value decreases proportionally to the Universe temperature, in which case one deals with the so called melting domain walls. I will demonstrate that gravitational wave signatures of melting domain walls are in a particular good agreement with pulsar timing experiments.

If you want to join the seminar please register before 18:00, Feb 12 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

24/01/2025

Dear Colleagues,
We are pleased to announce that the first ITMP seminar of the 2025 will be held on Wednesday, Jan 29, 18:00 (Moscow time). It will be organised via Zoom.

Speaker: Christopher Couzens, University of Oxford
Title: Localising Romans Supergravity
Abstract: In this talk I will discuss how Equivariant Localization can be used to compute observables in supergravity without the need to solve the equations of motion. We will use 6d Romans supergravity as our test case and show that the on-shell action is almost completely determined in terms of topological data. This allows us to recover known results in the literature and to make predictions for hitherto unknown solutions.

If you want to join the seminar please register before 18:00, Jan 29 here: https://docs.google.com/forms/d/e/1FAIpQLSfocDfhceSOdpIR7i1-xzyTrCyHwqvweF25wEHiGkpwMFsNOw/viewform
If you would like to subscribe to newsletters about ITMP seminars, please, contact [email protected]

Institute for Theoretical and Mathematical Physics MSU

27/05/2025

21/05/2025

06/05/2025

22/04/2025

15/04/2025

09/04/2025

01/04/2025

17/03/2025

24/02/2025

18/02/2025

11/02/2025

24/01/2025

Address

Telephone

Website

Alerts

Contact The Business

Shortcuts

Share

Category