SCIENCE BRINGS NATIONS TOGETHER
International Conference "Advances in Quantum Field Theory (AQFT'25)"
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.
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08:30
Registration
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Morning session
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1
OpeningSpeaker: Dmitry Kazakov (JINR)
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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 transformSpeaker: Andrei Barvinsky
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1
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11:00
Coffee break
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Morning session
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4
Non-renormalizable interactions beyond the leading orderSpeaker: Dmitry Kazakov (JINR)
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5
Factorization of infrared singularities and the Steinmann relationSpeaker: Victor Fadin (Budker Institute of Nuclear Physics)
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6
The modern status of heavy quark physics in the covariant confined quark modelSpeaker: Mikhail Ivanov (Joint Institute for Nuclear Research, Dubna, Russia)
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4
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13:00
Lunch
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Afternoon session
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7
On beta-function of supersymmetric deformed integrable sigma modelsSpeaker: Mikhail Alfimov (HSE University, LPI RAS and NRNU MEPhI)
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8
Integrability and collinear OPE for form factors in N=4 SYMSpeaker: Leonid Bork (ITEP, CFAR VNIIA)
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9
4d superconformal indices, 3d partition functions and many-body systemsSpeaker: Vyacheslav Spiridonov (BLTP JINR)
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10
Active and sterile Majorana neutrinos in models with left-right chiral symmetrySpeaker: Mikhail Dubinin (SINP, Moscow State University)
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11
On the kinetic mixing of the Weyl meson and vector bosons of the Standard ModelSpeaker: Sergey Sedov (Sarov State Physics Technical Institute, National Research Nuclear University MEPhI, Sarov Branch (SarPhTI), Sarov, Russia)
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7
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16:00
Photo
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Afternoon session
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12
Hypergeometric functions, IBP reduction and series expansionsSpeaker: Andrei Onishchenko (JINR)
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13
Holographic RG flows in a 3D gauged supergravitySpeaker: Lev Astrakhantsev (MIPT, ITEP, ITMP MSU)
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14
Jet Quenching in Anisotropic Holographic QCD: Analysis of Phase Transitions and Critical RegionsSpeaker: Pavel Slepov (MI RAS)
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16
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: Yulia Ageeva (INR RAS)
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12
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18:00
Break
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Welcome party
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08:30
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Morning session
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18
Relativistic fluid dynamics with multiple conserved charges and holographySpeaker: Andrei Starinets (University of Oxford)
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11:00
Coffee break
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Morning session
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20
Monodromy of multiloop integrals in d dimensionsSpeaker: Roman Lee (Budker Institute of Nuclear Physics)
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22
Small-pT charmonium production in the soft-gluon resummation approachSpeaker: Vladimir Saleev (Samara National Research University)
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20
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13:00
Lunch
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Afternoon session
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23
On a covariant quantization of totally antisymmetric tensor-spinor field modelSpeaker: Vladimir Krykhtin (Tomsk State Pedagogical University)
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24
Yang-Baxter structure of extended spaceSpeaker: Edvard Musaev (BLTP JINR)
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25
Thermal holographic RG flows and bulk-boundary propagators in truncated supergravitiesSpeaker: Anastasia Golubtsova (BLTP JINR)
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26
Physical state of axion and its phenomelogy in the 3-3-1 with B-L symmetry modelSpeaker: Vu Hoa Binh (Vietnam Academy of Science and Technology)
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27
A New Approach to Study the Structure of Renormalization Group Equation SolutionsSpeaker: Denis Tolkachev (JINR BLTP)
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23
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16:00
Coffee break
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Afternoon session
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28
Exploring multiparticle amplitudes by means of Exact Landau methodSpeaker: Bulat Farkhtdinov (INR RAS)
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29
String tension in magnetic field for HQGPSpeaker: Kristina Rannu (Educational and Scientific Institute of Gravitation and Cosmology (ESIGC) of Peoples Friendship University of Russia (RUDN))
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30
Two-loop chiral effective superpotential in some gauge N=1 supersymmetric modelsSpeaker: Alfiia Mukhaeva (Dubna State University, Joint Institute for nuclear research)
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31
Sigma Models as Spin Chains LimitSpeaker: Viacheslav Krivorol (Institute for Theoretical and Mathematical Physics (MSU) and Steklov Mathematical Institute, Moscow)
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32
On the interplay between the BFKL resummation and high-energy factorization in Mueller-Navelet dijet productionSpeaker: Alexey Chernyshev (BLTP JINR and Moscow State U.)
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28
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Morning session
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33
Correlator of heavy-light quark currents in HQETSpeaker: Andrey Grozin (Budker Institute of Nuclear Physics)
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34
(Hyper)kahler reduction for pedestriansSpeaker: Andrei Smilga (University of Nantes)
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35
Extending the LCSR method to the electromagnetic pion form factor at low momenta using QCD renormalization-group summationSpeaker: Sergey Mikhailov (BLTP, JINR)
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33
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11:00
Coffee break
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Morning session
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36
Conformal four-point ladder integrals in diverse dimensions and polylogarithmsSpeaker: Alexey Isaev (BLTP, JINR)
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37
Critical non-Abelian vortex string in N=2 supersymmetric QCD and (mass-deformed) world sheet Liouville theorySpeaker: Alexei Yung (Petersburg Nuclear Physics Institute)
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38
Critical Non-Abelian Strings and N=2 2D Black HolesSpeaker: Andrei Marshakov (HSE University & ITEP)
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36
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13:00
Lunch
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Afternoon session
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39
Scale and scheme dependence in applications of QED parton distribution and fragmentation functionsSpeaker: Andrej Arbuzov (BLTP JINR)
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40
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) -
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New TMD functions and the twisted quark statesSpeaker: Igor V. Anikin (Bogoliubov Lab of Theor Phys JINR)
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42
Three-loop divergent contributions to effective action in N=(1,1) D=6 SYM theorySpeaker: Boris Merzlikin (TPU)
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39
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16:00
Coffee break
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Afternoon session
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44
On quantum properties of the higher-derivative supersymmetric 6D gauge theorySpeaker: Alexandra Budekhina (BLTP JINR)
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45
Indecomposable multiplets in supersymmetric mechanicsSpeaker: Stepan Sidorov (BLTP JINR)
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46
Minimal string theory and topological recursionSpeaker: Aleksandr Artemev (Landau Institute for Theoretical Physics)
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47
Improved N=(1,0), d=6 non-Abelian tensor theorySpeaker: Nikolay Kozyrev (BLTP JINR)
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44
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Morning session
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48
The Dirac singleton as a relativistic field beyond the Standard ModelSpeaker: Mikhail Vasiliev (LPI RAS)
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50
Harmonic Analyticity as a Basis of N=2 Supersymmetric Higher SpinsSpeaker: Evgeny Ivanov (BLTP JINR)
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48
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11:00
Coffee break
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Morning session
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51
On BRST Lagrange formulation of higher spin fieldsSpeaker: Sergey Fedoruk (BLTP JINR)
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52
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 областиSpeaker: Mikhail Nalimov (SPdU) -
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Methods for deriving functional relations for multi-loop Feynman integralsSpeaker: Oleg Tarasov (JINR Dubna, Moscow Region, Russia)
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51
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13:00
Lunch
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Afternoon session
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54
Lorentz covariance of the four-dimensional higher spin theory within the BRST formalismSpeaker: Olga Gelfond (LPI RAS)
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55
Decomposition of the gluon field into monopole and monopoleless componentsSpeaker: Vitaly Bornyakov (IHEP, Protvino)
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56
General Lagrangian formulations and structure of covariant cubic vertices for mixed-antisymmetric HS fieldsSpeaker: Alexander Reshetnyak (TSPU)
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57
Dirac fermion theory and spacetime geometrySpeaker: Yuri Obukhov (Nuclear Safety Institute (IBRAE), Russian Academy of Sciences)
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54
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16:00
Coffee break
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Afternoon session
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61
Off-diagonal expansions for some functions of minimal operatorsSpeaker: Alexey Kalugin (MIPT)
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17:50
Break
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19:00
Conference dinner
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Morning session
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63
Once more on Riemann dzeta functions cancellations and manifestations in the multiloop calculationsSpeaker: Andrei Kataev (Institute for Nuclear Research of RAS)
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64
Renormalization group running of couplings in various supersymmetric theoriesSpeaker: Konstantin Stepanyantz (MSU)
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65
Naturalness Criteria for Standard ModelSpeaker: Victor Kim (NRC KI - PNPI, Gatchina)
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63
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11:00
Coffee break
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Morning session
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66
Three-loop anomalous dimensions of fixed-charge operators in the SMSpeaker: Alexander Bednyakov (Joint Institute for Nuclear Research)
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67
On QED in the Schwarzschild spacetimeSpeaker: Igor Volobuev (Skobeltsyn Institute of Nuclear Physics (SINP MSU))
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68
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"))
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66
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13:00
Lunch
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Afternoon session
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69
Casimir effect for scalar field rotating on a diskSpeaker: Michael Bordag (Universität Leipzig)
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70
Bounds on the renormalization group functions and dark matterSpeaker: Nikolai Krasnikov (Institute for Nuclear Research RAS)
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71
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) -
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Quantum field theory description of neutrino oscillations in external fieldsSpeaker: Maxim Dvornikov (IZMIRAN)
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73
On the behavior of correlation functions at large time–like separation in curved space-timeSpeaker: Dmitrii Diakonov (MIPT and ITEP)
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69
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16:00
Coffee break
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Afternoon session
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74
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) -
75
The role of vacuum polarization in the decay of scalars during the preheatingSpeaker: Andrey Nikitenko (Russia)
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76
Neutrino spin oscillations in the vicinity of a black hole.Speaker: Mridupawan Deka (Joint Institute for Nuclear Research)
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74
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