Lomonosov Moscow State University

Postdoctoral Fellows

  • Dmitry Ponomarev


    Since October, 2019

    I am mainly interested in constructing and analyzing interacting theories of higher-spin 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 higher-spin theories employing the light-cone gauge approach and established the relation of the latter theories to self-dual Yang Mills theory and sigma models, as well as computed simplest quantum corrections in higher-spin theories.  

  • Ariel Alejandro Arza Conejeros


    Since December, 2019

    My research topic is mainly related to axions, hidden photons and weakly interacting particles. So far, I have been investigating new mechanism to search for them and their role as dark matter candidates. I am also interested in Bose condensation and the influence of quantum effects in large structures and cosmology.

  • Ilya Bakhmatov


    Since March, 2020

    My scientific interests revolve around supergravity and string theory symmetries and dualities. I have worked on fermionic T-duality and applying it to supergravity solutions that are important from the holographic point of view. Using the supergravity formulations that are T- and U-duality covariant, I have been studying properties of the ordinary and exotic branes. Main research topics at present are the Yang-Baxter deformations of string sigma-models in the supergravity language, and their possible generalisations for M-theory.

  • David Osten


    Since December, 2020

    My main research focus lies in the study of dualities of string and M-theory and their geometrical description via generalised (exceptional) geometry - in particular its appearance in the world-volume descriptions of string and M-theory and its use in the study Poisson-Lie T-duality.
    Connected to generalised geometry are my interests in the study of integrability, in particular the study of the classical integrability of string sigma models in certain backgrounds. Methods of generalised geometry helped to generate and understand new integrable sigma models.

  • Jose Alejandro Rosabal Rodriguez


    Since January, 2021

    My research interests focus on QFT and  entanglement entropy;  string theory and the study of its duality relations using generalized geometry or the so called exceptional field theory; and quantum gravity with emphasis on the quantum aspects of the  black holes and Hawking radiation. Currently,   I am working on computing the S-matrix of a 4D spherically symmetric and asymptotically flat spacetime, using the canonical formalism of gravity to describe the  evaporating black hole,  in connection with some recent developments in this field related to the replica wormhole calculus.

  • Valentina Prilepina


    Since September, 2021

    The research interests of Valentina Prilepina lie at the heart of quantum field theory (QFT), in the conformal field theory (CFT) approach to exploring the vast space of theories. She seeks to shed light on strongly-coupled QFTs by exploiting the conformal bootstrap approach to CFT. Broadly, she desires to contribute to the development of efficient general nonperturbative techniques for solving such theories, with a particular emphasis on CFTs and their applications. She is also interested in probing aspects of holography, string theory, and black hole physics from the perspective of AdS/CFT duality.

  • Maxime Trepanier


    Since October, 2021

    I am interested in extended operators in superconformal field theories and the wide array of nonperturbative techniques used to study them. In my work I mostly focus on the surface operators of the 6d N=(2,0) theories, which I study using a combination of holography, supersymmetry and CFT techniques. 

    In particular, together with my collaborators I have constructed new classes of BPS surfaces with interesting expectation value. They offer a new playground for precision tests of holography and other methods, as well as give a window into the dynamics of M5-branes.

  • Andrea Fontanella


    Since October, 2021

    My research interests include string theory, supergravity, differential geometry and integrability in the AdS/CFT correspondence. I obtained various results about the quantum behaviour of massless modes appearing in integrable AdS2 and AdS3 string backgrounds. In particular I proposed a new geometric interpretation of their scattering matrix. I studied problems related to supersymmetric solutions of heterotic supergravity with alpha prime corrections, in particular regarding their classification and the supersymmetry enhancement mechanism for near-horizon geometries. Recently, I am working on non-relativistic string theory, aiming to a non-relativistic formulation of the AdS/CFT correspondence and questioning about its integrability. 

  • Timothy Anson


    Since November, 2021

    My research is focused on modified theories of gravitation, and in particular the extensions of general relativity (GR) with a scalar field (scalar-tensor theories). I am interested in the properties of black holes, stars and cosmology in these theories. It is important to study the solutions for black holes and stars in modified gravity in order to predict new phenomena and/or constrain deviations from GR, especially given the growing precision of experimental tests that probe the nature of these objects.
    Recently, my collaborators and I constructed a deformed version of the Kerr metric (which describes a rotating black hole in GR). The construction relies on the disformal map, and the spacetime presents many interesting features. While it is similar to Kerr in some aspects, certain properties (like noncircularity) are very different from those of black holes in GR, and they are worthy of further study. We also obtained experimental signatures of these solutions by examining the post-Newtonian orbit of stars around such objects.

  • Luca Cassia


    Starting from May, 2022