
Methods,
Algorithms and Software for Modeling Physical Systems,

Leaders: 
Gh. Adam 
Deputies: 
J.
Busa 
Participating
Countries and International organizations:
Armenia, Belarus, Brazil, Bulgaria, Canada, CERN, China, Czech Republic, France, Georgia, Germany, Hungary, Israel, Italy, Japan, Kazakhstan, Lithuania, Moldova, Mongolia, Poland, Romania, Russia, Slovakia, South Africa, Switzerland, Tajikistan, United Kingdom, USA, Vietnam.
Issues
addressed and main goals of research:
Carrying out paramount advanced research in computational mathematics and physics, directed to the creation of new mathematical methods, algorithms, and software for the numerical or symbolicnumerical solution of topics arising in experimental and theoretical physics studies. This subject area includes a wide spectrum of investigations approved for completion in JINR within the seven year period 2017–2023 in high energy physics, nuclear physics, physics of condensed matter and of nanostructures, biophysics, information technologies, the solution of which is inseparable from the use of computing. Such subject matters of the outmost importance in JINR are the NICA project, the neutrino program, the superheavy and exotic nuclei physics, the neutron based investigations. The needed numerical or symbolicnumerical computing will be done on the Multifunctional Information and Computing Complex (MICC), primarily the HybriLIT heterogeneous computing platform which involves the training and test cluster HybriLIT and the "Govorun" supercomputer and the emerging Big Data distributed infrastructure. The research teams include both experienced scientists with outstanding scientific achievements and enthusiastic young scientists and engineers. The requested financing will cover salaries, participations in scientific conferences, scientific visits and the acquisition of a minimal number of personal computers and licenses, within the approved resources for LITJINR. A distinctive feature of this research is the close cooperation of the Laboratory of Information Technologies (LIT) with research groups from all JINR laboratories and Member State institutions.
Expected
main results in the current year:
Threedimensional computer simulation of superconducting magnets for the NICA (JINR) and FAIR (GSI) projects. Construction of maps of the magnetic field distributions in the working areas of the magnets with a view to their further application to simulate physical processes.
Solution of nonstandard magnetostatics problems arising due to ROT asymmetry in the fission of heavy nuclei.
COMSOL Multiphysics based development of a comprehensive model of an isochronous cyclotron.
Development of a mathematical model and calculation of beam dynamics in isochronous cyclotrons based on the use of equations of motion.
Mathematical modeling of magnetic fields in the study of polarization phenomena and spin effects.
Generalization of the Nambu–JonaLasinio model with Polyakov loop enabling analysis of available experimental data on the collision of heavy ions at the NICA energy range.
Modeling radiation induced changes in structures with defects in the framework of the molecular dynamics method.
Numerical simulation of effects produced by double femtosecond laser pulses on targets of various compositions.
Numerical modeling of magnetization reversal in nanomagnetic materials using the chirping effect.
Computer modeling of quantum solids with dislocations exhibiting superfluid properties.
Investigation of nuclear physics processes within the hybrid microscopic potential using various density models of colliding nuclei.
Numerical study of the structure of phospholipid membranes in vesicular systems based on smallangle neutron and xray scattering data.
Development of robust numerical methods for the study of complex processes in layered Josephson structures and systems of superconducting spintronics.
Numerical study of particlelike solutions in multidimensional models of field theory; investigation of solitary waves in condensed matter systems.
Numerical investigation of the essential characteristics of electromagnetic cascade showers in the energy range E ≥ 10^{15 }eV.
Search for blackhole, wormhole and solitonlike solutions from a selfconsistent system of EinsteinMaxwellDirac equations.
Upgrade of the SAS primary processing program for the YuMO spectrometer to include anisotropic pattern scattering samples at the positionsensitive detector.
Extension of the FITTER program by increasing the number of theoretical models, improving its performance and GPU interface for experimental data processing.
Development of an extrapolation method within the basic element method (BEM) on nonuniform threepoint grids for data processing and the numerical solution of ordinary differential equation problems.
Further BEM application for the processing and analysis of neutron noise of the IBR2M reactor.
BEM use for the approximation of the dependence of the energy losses of charged particles in the ionization chamber (STAR experiment).
Implementation of Bayesian automatic adaptive quadrature with two interpolatory rules.
Modeling the interaction of electrons with a grating in a freeelectron laser of SmithPurcell type.
Development of methods of extracting the mass spectrum of neutron stars from the comparison of the observations of surface temperature of pulsars with the simulation results of their cooling evolution.
Modeling heavyion fragmentation within the combined transport – statistical approach.
Numerical analysis of crystal fields in magnetic rareearth systems using quantum chemistry methods.
Numerical study of electron scattering through a multiple corrugated graphene structure.
Tuning of FTF and QGS models of Geant4 for charmed particle production.
Simulation and analysis of nucleusnucleus interactions at the NICA energy range in the Geant4 FTF and QGS hadronic models.
Further extension of the MonteCarlo generator of heavyion collisions, DCMSMM, with features asked by the NICA projects.
Use of DCMSMM for the mass simulation of events for BM@N, SRC and MPD and participation in data analysis within the experiments conducted at these facilities.
Development of detector alignment algorithms for the TimeProjection Chamber of the MPD central barrel.
Further contribution to the development of the complex of databases for the CBM, BM@N and MPD experiments.
Development and implementation of algorithms for data modeling and reconstruction at the BM@N track detectors.
FAIRRoot and Geant4 MonteCarlo simulation of the experiments with the OLVEHERO detector prototype during its testing at the SPS accelerator at CERN.
Development of methods and algorithms for identifying the distribution of events with hadronic and electromagnetic showers from arrival directions of cosmic rays recorded by the NUCLEON satellite experiment.
Support for the ATLAS experiment software: development and maintenance of the configuration and management of ATLAS TDAQ, EventIndex for future RUN3, the CREST data format and the CREST client library.
Development of methods for evaluating the characteristics of the Cathode Strip Chambers with updated electronics in the CMS experiment.
Development of models, methods, algorithms and software for the selection of rare processes in the CBM experiment.
Development of methods and algorithms for machine and deep learning, as well as algorithms based on computer vision for automating the analysis of data from radiobiological studies of laboratory animals and radiobiological experiments.
Development of efficient scalable algorithms based on the neural network approach for reconstructing multiple tracks in highenergy physics experiments, including for the NICA megaproject.
Optimization of the most timeconsuming parts of the algorithms used for event modeling and reconstruction in the NICA experiments using highperformance computing techniques such as OpenMP, MPI, CUDA/OpenCL.
Application of machine learning methods for the simulation and analysis of the properties of linear structures in the mass distribution of nuclear reaction products.
Further development of machine and deep learning methods and algorithms for predicting the state of the environment and detecting plant diseases.
Development and implementation of hybrid FEMBEM algorithms for solving complex nonlinear magnetostatic problems with highaspect ratio geometries within the COMSOL Multiphysics package.
Development and application of the parallel method of asynchronous differential evolution and other minimization algorithms for the study of multiparameter models of nuclear physics and condensed matter physics.
Development of methods and software for the highperformance solution of multiparameter physical models described by systems of nonlinear differential equations (including superconducting processes in Josephson structures and gashydrodynamic processes in porous media).
Development and implementation of parallel algorithms and programs for the molecular dynamics modeling of structures with defects on the HybriLIT platform.
Adaptation of the ROOT toolkit designed for the most plausible fitting and modeling of the expected distribution of events in physical analysis for the GPU component of the HybriLIT platform.
Completion of the implementation of the parallel package for heavyion collisions on the HybriLIT platform and its inclusion in the JINRLIB library.
Development of parallel algorithms on largescale random matrices.
Solution of multiphysical problems in the accelerator design, dosimetry and radiation safety.
Development of parallel algorithms and program modules for the highaccuracy solution of nonlinear magnetostatics problems by means of higherorder discontinuous and twolevel domain decomposition methods.
Optimization of the parameterization of superdense nuclear matter models in the simulation of heavyion collisions and in astrophysical applications.
Use of minimal information entropy as a criterion for selecting a code for an iterative process of decoding lowdensity paritycheck (LDPC) codes.
Development of minimax optimization computational schemes for calculating the relativistic energies of the ground and excited states of singleelectron homonuclear superheavy dimers and trimmers.
Numerical simulation of Compton double ionization of helium atoms near the threshold.
Study of the possibility of using Fortran library programs (from JINRLIB, CERNLIB) by modern programming languages (Python, C#).
Development of a prototype of an intelligent monitoring system for distributed computing systems for streaming data (computer infrastructure, data transmission networks, information security).
Application of methods and techniques of machine learning and artificial intelligence for the optimization of the functioning and security of distributed computing for physical experiments.
Development of algorithms for modeling, reconstruction and classification/identification of events, as well as of approaches and methods for the intelligent monitoring of detectors of physical experiments on hybrid systems.
Selection and implementation of a business analytics solution for a heterogeneous computing environment that allows solving the problems of analysis and visualization of the results of physical experiments, monitoring systems and other applications.
Application of the created methods and algorithms of Big Data Analytics for the solution of relevant applied problems from other fields of science, socioeconomic research included.
Analysis of errors caused by the hardware of 5qubit IBM quantum computers on examples of quantum teleportation of the Bell states.
Development of quantum algorithms for Tensor Networks contractions with the aim at modeling phase transitions in Lattice QCD.
Calculation of nonclassicality indicators of lowdimensional quantum systems based on the negativity of the Wigner functions.
Comparative analysis of the separability/entanglement probability with nonclassicality indicators for lowdimensional quantum systems.
Application of the method of evolutionary Bogolyubov equations in quantum field theory to the description of open lowdimensional quantum systems.
Development and implementation of algorithms for studying entanglement in models of quantum systems based on unitary representations of wreath products of finite groups.
Development and implementation of new efficient algorithms for investigating and solving systems of nonlinear algebraic equations based on the use of GRID environment resources and on the construction of a new involutive division of monomials.
Development of new finite element schemes enabling collective nuclear spectra estimates.
Derivation of functional equations for 5 and 6point oneloop Feynman integrals with massive particles.
List of Activities 



Activity or experiment 
Leaders 


Laboratory
or other 
Main researchers 

1. 
Mathematical
and computation 
Gh.
Adam 


LIT 
S. Adam, P.G. Akishin, I.V. Amirkhanov, P.Kh. Atanasova, A.S. Ayriyan, E.A. Ayrjan, I.V. Barashenkov, M.V. Bashashin, A.A. Bogolubskaya, A.M. Chervyakov, N.D. Dikoussar, H. Grigorian, M. Kakenov, Yu.L. Kalinovsky, T.V. Karamysheva, D.S. Kulyabov, K.V. Lukyanov, N.V. Makhaldiani, T.I. Mikhailova, E.G. Nikonov, K. Oganesyan, D.V. Podgainy, R.V. Polyakova, T.P. Puzynina, V.S. Rikhvitsky, B. Saha, N.R. Sarkar, I. Sarkhadov, S.I. Serdyukova, Z.A. Sharipov, N.Yu. Shirikova, A.G. Soloviev, T.M. Solovieva, O.I. Streltsova, L.A. Syurakshina, Z.K. Tukhliev, O.O. Voskresenskaya, R.M. Yamaleev, E.P. Yukalova, O.I. Yuldashev, M.B. Yuldasheva, E.V. Zemlyanaya


VBLHEP 
G.N. Agakishiev, A.Yu. Boytsov, E.E. Donets, H.G. Khodzhibagiyan, A.D. Kovalenko, V.P.Ladygin, E.E. Perepelkin 




BLTP 
D.E. AlvarezCastillo, D. Blaschke, A.V. Friesen, M. Hnatič, R.V. Jolos, A.S. Khvorostukhin, E.E. Kolomeitsev, V.K. Lukyanov, R.G. Nazmitdinov, V.V. Papoyan, A.B. Pestov, L.A. Sevastyanov, V.D. Toneev, V.V. Voronov, D.N. Voskresensky, V.I. Yukalov, V.Yu. Yushankhai


FLNR 
A.G. Artukh, B. Erdemchimeg, R.A. Rymzhanov, Yu.M. Sereda, V.A. Skuratov


FLNP 
E.B. Askerov, O.I. Ivankov, A.I. Kuklin, V.V. Novitsky, Yu.N. Pepelyshev 

DLNP 
G.A. Karamysheva, O.V. Karamyshev, I.N. Kiyan, V.A. Malinin, D.V. Popov, G.T. Torosyan

2. 
Software
complexes and 
P.V.
Zrelov 


LIT 
E.P. Akishina, E.I. Aleksandrov, I.N. Aleksandrov, D.A. Baranov, O.Yu. Derenovskaya, I.A. Filozova, Val.V. Ivanov, A.I. Kazymov, B.F. Kostenko, M.A. Mineev, G.J. Musulmanbekov, V.V. Palichik, R.V. Polozov, V.S. Rikhvitsky, T.F. Sapozhnikova, I. Satyshev, V.N. Shigaev, S.K. Slepnev, A.N. Sosnin, V.V. Uzhinsky, N.N. Voitishin, A.V. Yakovlev, V.B. Zlokazov


VBLHEP 
P.N. Batyuk, B.V. Batyunya, A.V. Bychkov, D.K. Dryablov, A.S. Galoyan, K.V. Gertsenberger, I.A. Golutvin, N.V. Gorbunov, A.Yu. Kamenev, M.N. Kapishin, V.Yu. Karzhavin, V.V. Lenivenko, A.M. Makan’kin, S.P. Merts, A.N. Morozov, M. Patsyuk, V.V. Perelygin, Yu.P. Petukhov, S.V. Razin, O.V. Rogachevsky, M.M. Rumyantsev, S.S. Shimansky, S.V. Shmatov, V.N. Spaskov, A.V. Zarubin, V. Zhezher


BLTP 
R.G. Nazmitdinov, V.D. Toneev 

FLNR 
Yu.S. Tsyganov, V.K. Utenkov 

FLNP 
A.M. Balagurov, A.V. Belushkin, D.P. Kozlenko, S.A. Manoshin 

DLNP 
I.V. Bednyakov, V.A. Bednyakov, I.A. Belolaptikov, V.M. Grebenyuk, A.G. Olshevsky, A.E. Pan, D.B. Pontecorvo, F.V. Prokoshin, B.A. Shaibonov, L.G. Tkatchev


UC 
S.Z. Pakulyak

3. 
Numerical
methods, algorithms 
Gh.
Adam 


LIT 
P.Kh. Atanasova, A.S. Аyriyan, D.R. Badreeva, D.A. Baranov, M.V. Bashashin, S.D. Belov, D.V. Belyakov, J.Busa, J. Buša Jr., Yu.A. Butenko, A.M. Chervyakov, G. Chuluunbaatar, O. Chuluunbaatar, P.V. Goncharov, H. Grigorian, A.A. Gusev, J.N. ogly Javazade, I.S. Kadochnikov, M. Kakenov, Yu.L. Kalinosky, M.A. Matveev, A.V. Nechaevsky, G.A. Ososkov, V.V. Papoyan, D.V. Podgainy, L.V. Popkova, T.P. Puzynina, A.A. Sapozhnikov, T.F. Sapozhnikova, R.N. Semenov, Z.A. Sharipov, T.M. Solovieva, A.V. Stadnik, Z.K. Tukhliev, A.V. Uzhinsky, A.V. Volokhova, O.I. Yuldashev, M.B. Yuldasheva, E.V. Zemlyanaya, E.I. Zhabitskaya, M.I. Zuev


LITMICC 
V.V. Mitsyn, T.A. Strizh 

FLNR 
R. Kabytayeva, S.V. Mitrofanov, Yu.Ts. Oganesyan, Yu.V. Pyatkov


BLTP 
Yu. B. Ivanov, S. Liebing, K.A. Maslov, R.G. Nazmitdinov, Yu.V. Popov, I.R. Rakhmonov, Yu.M. Shukrinov, S.I. Vinitsky


VBLHEP 
A.Yu. Boytsov, E.E. Donets, O.V. Rogachevsky 

DLNP 
G.A. Karamysheva, G.D. Shirkov, A.S. Zhemchugov 

FLNP 
M.V. Frontaseva, M.F. Kiselev, N. Kucherka 

LRB 
I.M. Enyagina, I.A. Kolesnikova

4. 
Methods,
algorithms and software 
D.V. Podgainy 


LIT 
N. Abbasly, V. Abgaryan, M. Bures, O. Chuluunbaatar, A.A. Gusev, V.V. Kornyak, Yu. Palii, A.M. Raportirenko, I.A. Rogozhin, O.V. Tarasov, A.G. Torosyan, D.A. Yanovich


BLTP 
P. Fiziev, S.N. Nedelko, A. I. Titov, S.I. Vinitsky, V.I. Yukalov 

VBLHEP 
O.V. Rogachevsky 

LRB 
A.V. Czhizhov 
Collaboration
Country or International Organization 
City 
Institute or laboratory 
Armenia 
Yerevan 
Foundation ANSL 


IIAP NAS RA 


RAU 


YSU 
Belarus 
Brest 
BrSU 

Gomel 
GSTU 

Minsk 
IM NASB 
Brazil 
Sao Carlos, SP 
IFSC USP 
Bulgaria 
Plovdiv 
PU 

Sofia 
IMI BAS 


INRNE BAS 


SU 
Canada 
Toronto 
IBM Lab 

Vancouver 
UBC 
CERN 
Geneva 
CERN 
China 
Beijing 
IHEP CAS 
Czech Republic 
Prague 
CTU 
France 
Marseille 
UPC 

Nancy 
UL 

Saclay 
IRFU 
Georgia 
Tbilisi 
GTU 


TSU 


UG 
Germany 
Berlin 
MBI 

Bonn 
UniBonn 

Darmstadt 
GSI 

Dresden 
IFW 

Frankfurt/Main 
Univ. 

Giessen 
JLU 

Hamburg 
Univ. 

Heidelberg 
MPIK 

Karlsruhe 
KIT 

Kassel 
Uni Kassel 

Munich 
LMU 

Rostock 
Univ. 
Hungary 
Budapest 
Wigner RCP 
Israel 
Rehovot 
WIS 

Tel Aviv 
TAU 
Italy 
Bari 
UniBa 

Catania 
INFN LNS 

Genova 
INFN 
Japan 
Saitama 
SU 
Kazakhstan 
Almaty 
INP 
Lithuania 
Kaunas 
VMU 
Moldova 
Chisinau 
IAP 
Mongolia 
Ulaanbaatar 
IMDT MAS 
Poland 
Krakow 
INP PAS 

Lublin 
UMCS 

Otwock (Swierk) 
NCBJ 

Wroclaw 
UW 
Romania 
Bucharest 
IFINHH 


UB 

ClujNapoca 
INCDTIM 

Magurele 
IFA 


ISS 

Timisoara 
UVT 
Russia 
Dubna 
Dubna State Univ. 

Gatchina 
NRC KI PNPI 

Irkutsk 
ISU 

Moscow 
GPI RAS 


ITEP 


JIHT RAS 


MRSU 


MSU 


NNRU "MEPhI" 


PFUR 


RCC MSU 


SINP MSU 

Moscow, Troitsk 
INR RAS 

Perm 
PSNRU 

Puschino 
IMPB RAS 

Saratov 
SSU 

St. Petersburg 
NIIEFA 


SPbSU 

Tomsk 
TSU 
Slovakia 
Banska Bistrica 
UMB 

Kosice 
IEP SAS 


TUKE 


UPJS 
South Africa 
Cape Town 
UCT 

Port Elizabeth 
NMU 

Stellenbosch 
SU 
Switzerland 
Zurich 
ETH 
Tajikistan 
Dushanbe 
PHTI NAST 


TNU 

Khujand 
KSU 
United Kingdom 
London 
Imperial College 

Oxford 
Univ. 

Plymouth 
Univ. 
USA 
Arlington, TX 
UTA 

Cambridge, MA 
MIT 

College Station, TX 
Texas A&M 

Davis, CA 
UCDavis 

Denton, TX 
UNT 

Los Angeles, CA 
UCLA 

Newport News, VA 
JLab 

San Diego, CA 
SDSU 

Upton, NY 
BNL 
Vietnam 
Hanoi 
VNU 
▲ 