SCIENCE BRINGS NATIONS TOGETHER International Conference "Advances in Quantum Field Theory (AQFT'25)"

11 Aug 2025, 08:00 → 15 Aug 2025, 20:00 Europe/Moscow

BLTP Conference Hall

The Bogoliubov Laboratory of Theoretical Physics of the Joint Institute for Nuclear Research organises the International Conference "Advances in Quantum Field Theory 2025" (AQFT-25).

Topics of the conference are:

• Quantum theory of gauge fields 
• Supersymmetric field theory
• Quantum field theory in curved spacetime
• Quantum gravity
• Higher spin field theory
• Nonperturbative methods in quantum field theory
• Multiloop calculations
• String/brane theory and AdS/CFT correspondence

 

The working languages are Russian and English. There will be a limited number of talks and no parallel sessions. Participation is possible only by invitation from the Organising Committee.

For registration, please fill in the online registration form. The deadline for application and title submission is 11 June. 

 

 

Poster.pdf

Monday 11 August

Morning session

1 Opening

Speaker: Dmitry Kazakov (JINR)

2 Surprises in supersymmetric quantum field theory (lecture)

Lecture

Speaker: Ioseph Buchbinder (Laboratory of Theoretical Physics, Joint Institute for Nuclear Research)

3 Functorial properties of Schwinger-DeWitt expansion and Mellin-Barnes transform

Speaker: Andrei Barvinsky

11:00 Coffee break

Morning session

4 Non-renormalizable interactions beyond the leading order

Speaker: Dmitry Kazakov (JINR)

5 Factorization of infrared singularities and the Steinmann relation

Speaker: Victor Fadin (Budker Institute of Nuclear Physics)

13:00 Lunch

Afternoon session

6 On beta-function of supersymmetric deformed integrable sigma models

Speaker: Mikhail Alfimov (HSE University, LPI RAS and NRNU MEPhI)

7 Integrability and collinear OPE for form factors in N=4 SYM

Speaker: Leonid Bork (ITEP, CFAR VNIIA)

8 4d superconformal indices, 3d partition functions and many-body systems

Speaker: Vyacheslav Spiridonov (BLTP JINR)

9 Active and sterile Majorana neutrinos in models with left-right chiral symmetry

Speaker: Mikhail Dubinin (SINP, Moscow State University)

10 On the kinetic mixing of the Weyl meson and vector bosons of the Standard Model

Speaker: Sergey Sedov (Sarov State Physics Technical Institute, National Research Nuclear University MEPhI, Sarov Branch (SarPhTI), Sarov, Russia)

16:00 Photo

Afternoon session

11 Hypergeometric functions, IBP reduction and series expansions

Speaker: Andrei Onishchenko (JINR)

12 Holographic RG flows in a 3D gauged supergravity

Speaker: Lev Astrakhantsev (MIPT, ITEP, ITMP MSU)

13 Disparity in sound speeds: implications for unitarity and effective potential in quantum field theory

In this talk a complete unitarity framework for quantum field theories whose massive scalar excitations propagate at different sound speeds will be presented. Starting from first principles we derive the exact partial-wave unitarity condition for «two-to-two» scattering with arbitrary masses and velocity hierarchies, recovering the standard and massless limits as special cases. Applying the formalism to a renormalizable two-field model, the optical theorem at one loop is verified and next we obtain compact, velocity-dependent perturbative unitarity bounds. Then the one-loop Coleman-Weinberg potential is derived in the background-field method, tracking how a small splitting between sound speeds reshapes the renormalization-group flow. Finally, it will be shown that all of quartic β-functions are rescaled in such a way that an accidental fixed line emerges.

Speaker: Dr Yulia Ageeva (INR RAS)

14 Jet Quenching in Anisotropic Holographic QCD: Analysis of Phase Transitions and Critical Regions

Speaker: Pavel Slepov (MI RAS)

15 Continuous spin field in AdS spaces

Speaker: Mikhail Podoinitsyn (JINR, BLTP)

18:00 Break

Welcome party

Tuesday 12 August

Morning session

16 Gravity and QCD

Speaker: Oleg Teryaev (JINR)

17 Relativistic fluid dynamics with multiple conserved charges and holography

Speaker: Andrei Starinets (University of Oxford)

18 TBA

Speaker: Irina Aref'eva (Steklov Mathematical Institute)

11:00 Coffee break

Morning session

19 Monodromy of multiloop integrals in d dimensions

Speaker: Roman Lee (Budker Institute of Nuclear Physics)

20 Hatted zeta-values in Feynman diagrams

Speaker: Anatoly Kotikov (JINR)

21 Small-pT charmonium production in the soft-gluon resummation approach

Speaker: Vladimir Saleev (Samara National Research University)

13:00 Lunch

Afternoon session

22 On a covariant quantization of totally antisymmetric tensor-spinor field model

Speaker: Vladimir Krykhtin (Tomsk State Pedagogical University)

23 1D sigma models via spin chains

Speaker: Dmitry Bykov (MI RAS)

24 TBA

Speaker: Konstantin Alkalaev (LPI RAS)

25 Yang-Baxter structure of extended space

Speaker: Edvard Musaev (Moscow Institute of Physics and Technology)

26 Thermal holographic RG flows and bulk-boundary propagators in truncated supergravities

Speaker: Anastasia Golubtsova (BLTP JINR)

16:00 Coffee break

Afternoon session

27 TBA

Speaker: Denis Tolkachev (JINR BLTP)

28 Exact Landau method in QM

Speaker: Bulat Farkhtdinov (INR RAS)

29 Physical state of axion and its phenomelogy in the 3-3-1 with B-L symmetry model

Speaker: Dr Vu Hoa Binh (Vietnam Academy of Science and Technology)

30 String tension in magnetic field for HQGP

Speaker: Dr Kristina Rannu (Educational and Scientific Institute of Gravitation and Cosmology (ESIGC) of Peoples Friendship University of Russia (RUDN))

31 Two-loop chiral effective superpotential in some gauge N=1 supersymmetric models

Speaker: Alfiia Mukhaeva (Dubna State University, Joint Institute for nuclear research)

32 Vacuum Viscosity: The Unruh Effect vs. String Theory Bound

Speaker: Georgy Prokhorov

33 On the interplay between the BFKL resummation and high-energy factorization in Mueller-Navelet dijet production

Speaker: Alexey Chernyshev (BLTP JINR and Moscow State U.)

Wednesday 13 August

Morning session

34 Correlator of heavy-light quark currents in HQET

Speaker: Andrey Grozin (Budker Institute of Nuclear Physics)

35 (Hyper)kahler reduction for pedestrians

Speaker: Andrei Smilga (University of Nantes)

36 Extending the LCSR method to the electromagnetic pion form factor at low momenta using QCD renormalization-group summation

Speaker: Sergey Mikhailov (BLTP, JINR)

11:00 Coffee break

Morning session

37 Conformal four-point ladder integrals in diverse dimensions and polylogarithms

Speaker: Alexey Isaev (BLTP, JINR)

38 Critical non-Abelian vortex string in N=2 supersymmetric QCD and (mass-deformed) world sheet Liouville theory

Speaker: Alexei Yung (Petersburg Nuclear Physics Institute)

39 Critical Non-Abelian Strings and N=2 2D Black Holes

Speaker: Andrei Marshakov (HSE University & ITEP)

13:00 Lunch

Afternoon session

40 Scale and scheme dependence in applications of QED parton distribution and fragmentation functions

Speaker: Andrej Arbuzov (BLTP JINR)

41 Meson mass spectrum in large N 2D QCD

We study the two-particle approximation of the Ising Field Theory (IFT), formulated in terms of the Bethe–Salpeter (BS) equation. Motivated by the striking structural similarity between BS equation in IFT and the 't Hooft equation in two-dimensional QCD, we develop a new non-perturbative analytical framework inspired by the method of Fateev, Lukyanov, and Zamolodchikov (FLZ). Within this approach, we compute spectral sums and systematically derive the large-n WKB expansion for the Bethe–Salpeter equation, which governs the spectrum of an infinite tower of mesons.

Speaker: Alexey Litvinov (Skoltech)

42 New TMD functions and the twisted quark states

Speaker: Igor V. Anikin (Bogoliubov Lab of Theor Phys JINR)

43 Perturbative renormalization by FEs on a compact manifold without boundary

Speaker: Majdouline Borji (Max-Planck institute for mathematics (Leipzig))

44 Three-loop divergent contributions to effective action in N=(1,1) D=6 SYM theory

Speaker: Boris Merzlikin (TPU)

16:00 Coffee break

Afternoon session

45 Conformal field theory in boxed black holes and information paradox

Speaker: Dmitry Ageev (Steklov Mathematical Institute, RAS)

46 Loop Corrections in Fermi Theory

Speaker: Arthur Borlakov (JINR)

47 On quantum properties of the higher-derivative supersymmetric 6D gauge theory

Speaker: Alexandra Budekhina (BLTP JINR)

48 Reducible multiplets of N=8, d=1 supersymmetry

Speaker: Dr Stepan Sidorov (BLTP JINR)

49 Minimal string theory and topological recursion

Speaker: Aleksandr Artemev (Landau Institute for Theoretical Physics)

50 Off-diagonal expansions for some functions of minimal operators

Speaker: Alexey Kalugin (MIPT)

51 The modern status of heavy quark physics in the covariant confined quark model

Speaker: Mikhail Ivanov (Joint Institute for Nuclear Research, Dubna, Russia)

Thursday 14 August

Morning session

52 The Dirac singleton as a relativistic field beyond the Standard Model

Speaker: Mikhail Vasiliev (LPI RAS)

53 On massive higher spins and gravity

Speaker: Yurii Zinoviev (IHEP)

54 Harmonic Analyticity as a Basis of N=2 Supersymmetric Higher Spins

Speaker: Evgeny Ivanov (BLTP JINR)

11:00 Coffee break

Morning session

55 On BRST Lagrange formulation of higher spin fields

Speaker: Sergey Fedoruk (BLTP JINR)

56 IR-effective quantum gravity in a theory with a cosmological constant: a renormalization group study of the gravitational potential at large distances

Исследуется стандартное неренормируемое действие квантовой гравитации без вклада материи
$$ S = \frac{1}{2\kappa} \int d^4x \sqrt{-g} \left( R - 2\Lambda \right). $$ Размерным анализом, общепринятым при исследовании непрерывных фазовых переходов в статистической физике, получено инфракрасно - эффективное действие для описания теории на больших расстояниях. Данное действие ренормируемо, логарифмической размерностью оказывается d=5+1. Метод квантово-полевой ренормализационной группы использован для построения $5+1-\epsilon$ - разложения функций Грина гравитонов. В однопетлевом приближении обнаружено степенное поведение на больших расстояниях гравитационного потенциала (степень отличатется от $1/r$ ), рост эффективных масс. Все это является результатом учета самодействия безмассовых гравитонов в ИК области

Speaker: Mikhail Nalimov (SPdU)

57 Strong interaction origin of hadron mass

Speaker: Yi-Bo Yang (ITP CAS)

13:00 Lunch

Afternoon session

58 Lorentz covariance of the four-dimensional higher spin theory within the BRST formalism

Speaker: Olga Gelfond (LPI RAS)

59 Decomposition of the gluon field into monopole and monopoleless components

Speaker: Vitaly Bornyakov (IHEP, Protvino)

60 On structure of covariant cubic vertices for interacting fermionic and bosonic higher-spin fields

Speaker: Alexander Reshetnyak

61 Dirac fermion theory and spacetime geometry

Speaker: Yuri Obukhov (Nuclear Safety Institute (IBRAE), Russian Academy of Sciences)

62 Methods for deriving functional relations for multi-loop Feynman integrals

Speaker: Oleg Tarasov (JINR Dubna, Moscow Region, Russia)

16:00 Coffee break

Afternoon session

63 Non-topological Solitons in CFT

Speaker: Emin Nugaev (INR RAS)

64 FeynGrav and Feynman rules for quantum gravity

Speaker: Boris Latosh (BLTP JINR)

65 U(1) gauged boson stars

Speaker: Yakov Shnir (BLTP, JINR)

66 Improved N=(1,0), d=6 non-Abelian tensor theory

Speaker: Nikolay Kozyrev (BLTP JINR)

67 N=2 supergravity with cosmological constant and AdS harmonic superspace

Speaker: Nikita Zaigraev (JINR, MIPT)

18:10 Break

19:00 Conference dinner

Friday 15 August

Morning session

68 Once more on Riemann dzeta functions cancellations and manifestations in the multiloop calculations

Speaker: Andrei Kataev (Institute for Nuclear Research of RAS)

69 Renormalization group running of couplings in various supersymmetric theories

Speaker: Konstantin Stepanyantz (MSU)

70 Naturalness Criteria for Standard Model

Speaker: Victor Kim (NRC KI - PNPI, Gatchina)

11:00 Coffee break

Morning session

71 Three-loop anomalous dimensions of fixed-charge operators in the SM

Speaker: Alexander Bednyakov (Joint Institute for Nuclear Research)

72 On QED in the Schwarzschild spacetime

Speaker: Igor Volobuev (Skobeltsyn Institute of Nuclear Physics (SINP MSU))

73 Mathematical paradoxes of the Dirac equation representations

We examine the Foldy-Wouthuysen, Feynman-Gell-Mann, and self-adjoint representations of the Dirac equation for fermions with spinor wave functions. The analysis is conducted for electrons and positrons interacting with electromagnetic fields. Versions of quantum electrodynamics are considered both within the scope of perturbation theory and in the non-perturbative regime with strong electromagnetic fields. Mathematical artifacts contradicting the physical premises of the theory are identified in the studied representations of the Dirac equation. These mathematical paradoxes are resolved if the theory only employs amplitude states (real and virtual) with positive energies.

Speaker: Vasiliy Neznamov (Federal Nuclear Center-All-Russian Research Institute of Experimental Physics (FSUE "RFNC-VNIIEF"))

13:00 Lunch

Afternoon session

74 Casimir effect for scalar field rotating on a disk

Speaker: Michael Bordag (Universität Leipzig)

75 Bounds on the renormalization group functions and dark matter

Speaker: Nikolai Krasnikov (Institute for Nuclear Research RAS)

76 The model of the interaction of the Majorana fermion with the electromagnetic field

На основе предположений о вещественности релятивистского фермионного поля Майораны спина ½ строится его Лагранжиан. В наиболее общей формулировке он содержит два параметра размерности массы. В безмассовой версии модели возможно локальное калибровочно-инвариантное взаимодействие спинорного поля с электромагнитным. Эта аналогичная квантовой электродинамике модель оказывается перенормируемой. Обсуждается специфика ее теории возмущений. Приводятся результаты расчета однопетлевых приближений функций Грина, а также и проделанного на их основе анализа наиболее важных особенностей поведения моделируемой системы.

Speaker: Yury Pismak (Saint-Petersburg State University)

77 Physics at the front of a gravitational shock wave

Speaker: Irina Pirozhenko (BLTP JINR)

78 Quantum field theory description of neutrino oscillations in external fields

Speaker: Maxim Dvornikov (IZMIRAN)

16:00 Coffee break

Afternoon session

79 On the behavior of correlation functions at large time–like separation in curved space-time

Speaker: Dmitrii Diakonov (MIPT and ITEP)

80 Effective action for Einstein Universe and anomaly driven Inflation

We calculate gravitational effective action of the conformal scalar on the perturbed static spacetimes having topologies $S^1 × R^d$, $R × S^d$ and $S^1 × S^d$, generalizing well-known $R^{d+1}$ case. Then, exploiting Wess-Zumino action of conformal anomaly, we apply the result obtained to the problem of primordial perturbations in Early Universe.

Speaker: Nikita Kolganov (MIPT & ITMP MSU & ITEP)

81 The role of vacuum polarization in the decay of scalars during the preheating

Speaker: Andrey Nikitenko (Russia)

82 Neutrino spin oscillations in the vicinity of a black hole.

Speaker: Mridupawan Deka (Joint Institute for Nuclear Research)

83 Holographic QCD running coupling for light quarks in strong magnetic field

Speaker: Mr Alexander Nikolaev (MI RAS & MSU)