Doctor of phys. -mat. sciences, professor, honored scientist of the Republic of Uzbekistan, Laureate of the State Prize named after A. Beruniy.
Prepared 2 doctors of science and 12 candidates of science.
Research Interests: Nonlinear waves and solitons in condensed matter, quantum gases and optical systems.
Publications: 5 monographs, 4 collections of articles, more than 10 reviews and 200 articles in national and international journals.


MAIN DATES OF LIFE AND SCIENTIFIC ACTIVITY OF PROFESSOR F. KH. ABDULLAEV

Abdullaev Fatkhulla Khabibullaevich was born on January 14, 1948 in Tashkent city.
Externally graduated from high school number 82. 1964 - 1969 years.
Student of the Faculty of Physics of Tashkent State University. 1969 – 1971.
Service in the military forces. 1971 – 1974.
A seconded graduate student of the INP AS RUz at JINR, Dubna. 1975.
Defense of a thesis for the degree of candidate of physical and mathematical sciences. 1974 – 1976.
Researcher, INP AS RUz., 1976 – 1977.
Assistant of the Department of Theoretical Physics of Tashkent State University. 1977 – 1983.
Senior Researcher at the Department of Thermal Physics AS RUz., 1983 – 1986.
Head of the Laboratory of wave processes of the Department of Thermal Physics AS RUz., 1985.
Defense of the thesis for the degree of Doctor of Physical and Mathematical Sciences. 1986 – 1992.
Deputy Head of the Department of Thermal Physics, Head of the Department of Thermal Physics. 1989.
Awarded the A. Beruni State Prize. 1990.
Awarded the academic title of professor in 1995.
Awarded the title of Honored Scientist of the Republic of Uzbekistan. 1992 – 1997.
Chairman of the Expert Council on Physics of the Higher Attestation Commission of RUz. 2002.
Prize of the AS RUz for the best scientific work of the year. 2003.
Awarded the Al-Khorezmi Medal of AS RUz for a series of studies on the Bose - Einstein condensates
1992 - 2006
2007 – 2012
2013 - 2016
2017 to the present
Scientific consultant of the Laboratory of theory of solid state and semiconductors, Physical technical Institute “Physics – Sun”, AS RUz.
International University of Malaysia Scientific Consultant, Physical-Technical Institute, Physics-Sun AS RUz.
Invited Professor:
Hugo Bordoni Foundation, Rome, Italy 1992.
University of Madrid, Spain 1993.
INSA, Rouen, France 1993.
Imperial College, London, UK 1994.
INSA, Rouen, France 1994.
Technological University, Denmark 1995.
Institute of Theoretical Optics, Jena, Germany 1997.
INSA, Rouen, France 1998.
Stanford University, USA 1999 – 2000.
Institute of Theoretical Physics, San Paolo, Brazil 2000.
University of Lisbon, Portugal 2001.
University of Illinois, USA 2002 – 2003.
Institute of Theoretical Physics, San Paolo, Brazil 2004.
Paul Sabatier University, France 2005.
University of Salerno, Italy 2006 – 2007.
Institute of Theoretical Physics, San Paolo, Brazil.
Abdullaev Fatkhulla Khabibullaevich - Doctor of Physical and Mathematical Sciences, Professor, the Laureate of State Prize named after Abu Rayhon Beruniy, Honored Scientist of the RUz, was awarded the Al - Khorezmi Medal of the AS RUz for outstanding scientific achievements. Professor F. Kh. Abdullaev, a prominent scientist of world renown, made a significant contribution to the development of science in the field of nonlinear physics. His works on the study of the nonlinear dynamics of various systems such as in optics, laser physics, in condensed matter, and in ultracold quantum gases have earned him fame among the world scientific community. He created an internationally recognized scientific school in nonlinear physics.
Abdullaev Fatkhulla Khabibullaevich was born on January 14, 1948 in Tashkent city. In 1964, he graduated from secondary school number 82. In 1964 - 1969, he studied in the department of physics, Tashkent State University. After graduating from university in 1969-1971, he served in the ranks of the military forces.
In 1971, he entered for postgraduate program at the Institute of Nuclear Physics, Academy of Sciences of the Republic of Uzbekistan and attached to the Joint Institute of Nuclear Research (JINR, Dubna). Here he worked on the theory of weak interactions, in particular, he studied Lie-type models with non-polynomial Lagrangians and non-local interactions. He showed that such an interaction leads to the existence of an infinite number of ground states. Later, he investigated the semiclassical limit of quantum electrodynamics with gravity. He calculates the addition to the electron’s eigen electromagnetic energy in a gravitational field. Under these results he successfully defended his thesis for the degree of Candidate of Physical and Mathematical Sciences under the name “Theory of weak interactions with non-polynomial Lagrangians” in 1975 at the joint scientific council of the AS RUz.
Upon returning from JINR, F.Kh. Abdullaev works as a research fellow at the INP, AS RUz, as an assistant at the Department of theoretical physics of the Tashkent State University. At the same time he began to be interested in nonlinear phenomena in various fields of physics.
In 1977 he was enlisted as a senior researcher in the Department of thermal physics, AS RUz. In 1983 he became the Head of the laboratory of wave processes at the Department of thermal physics AS RUz.
In 1985 he defended his doctoral thesis on the topic “Dynamics of solitons in inhomogeneous media” at the Scientific Council of the Institute of Theoretical Physics (Kiev), which he developed the theory of solitons in condensed media.
From 1986 to 1992, he worked as Deputy Head of Science, and later as a Head of the Department of Thermal Physics, AS RUz. During these years he wrote three monographs, two of them were translated into English.
In 1989, F. Kh. Abdullaev, together with S.A. Bahramov, S.A. Darmanyan and M.Ya. Mesh, for the series of works on the "Investigation of nonlinear wave processes of interaction of laser radiation with matter" was awarded the State Prize for Science and Technology named after Abu Rayhon Beruniy.
In 1990, F.Kh. Abdullayev was awarded the title of professor, and in 1995 the title of "Honored Scientist" of Uzbekistan.
In 1992 -1997 he headed the expert council in physics of the Higher Attestation Commission of the RUz.
Recognizing scientific achievements, in 1995 he was awarded the title “Honored Scientist” of the Republic of Uzbekistan. In 2003, he was awarded the Al-Khorezmi Medal of the Academy of Sciences of the Republic of Uzbekistan for a series of studies on the Bose - Einstein condensate.
All this time he has been intensively working on the study of nonlinear phenomena in optics and in condensed media, in particular, he has been studying the dynamics of solitons in various systems. In this case, the evolution of solitons in stochastic molecular crystals, magnets, ferroelectrics, and liquid crystals is comprehensively studied. He studied the chaos of nonlinear magnetic waves and fluxons in long Josephson junctions. He showed the possibility of the existence of dissipative breathers in nematic liquid crystals with simultaneous exposure to viscosity and an external field. He predicted the bound state of the proton and domain walls in molecular chains. By investigating the systems described by the Korteweg-de Vries, sine-Gordon and nonlinear Schrödinger equations with periodic perturbations, he predicted the dynamic chaos of solitons arising in an inhomogeneous medium under the action of an external field.
For the scientific activities of Professor F.Kh. Abdullayev, it is characterized by the rapid and in-depth development of new areas of physics and the ability to apply developed methods in one direction to another. He successfully solves the problem of particle motion in the central potential under the action of random perturbations (the Kepler stochastic problem) and applies the results to the propagation of optical solitons in fibers with random parameters. He created the theory of a soliton coupler, which was later experimentally implemented. He predicted the existence of an optical analogue of the localization of Anderson in the gratings of optical fibers with random parameters. This effect was experimentally observed by the group of F. Lederer in 2004 (Jena, Germany).
He studied the modulation instability of waves in media with periodically and randomly modulated parameters. A group of P. Kevrekidis from the University of Massachusetts (USA) observed these effects in experiments in 2006. He found a new region of modulation instability in optical fibers when higher orders of dispersion are essential. This prediction was also confirmed in experiment by the G. Millot’s group in 2003 (Dijon, France).
Continuing to study the dynamics of solitons in inhomogeneous and random environments, he applies the developed methods to nonlinear optics and Bose – Einstein condensate (BEC). Herewith, new physical models for nonlinear fibers, optical gratings and coupled waveguides are proposed. F. Kh. Abdullaev develops the theory of localized modes for a Bose condensate in a periodic potential, controlling dynamics of nonlinear excitations of condensate by the Feshbach resonance. He also predicts nonlinear resonance and chaos in a condensate in a two-well potential with a variable coupling constant. In addition, the existence of discrete breathers in a condensate placed in an optical lattice was shown. Later, such breathers were discovered in the experiments of the group of M. Ingushio (Florence, Italy) in 2002. In the ongoing researches, great attention is paid to a possibility of stabilizing solitons in nonlinear optical systems, ferromagnets, and Bose condensate. In studies on the BEC, F. Kh. Abdullaev developed the theory of nonlinear Fresnel diffraction for matter waves. He also studies the dynamics of discrete solitons of matter waves in systems with controlled nonlinearity. He found conditions for the existence and stability of two-dimensional solitons in a condensate with controlled dispersion. Also proposed a method for generating a chain of solitons in a Bose condensate by slowly varying the atomic scattering length in time. Investigating the dynamics of Bose condensate in an optical lattice, he, for the first time, proposed the use of the tight-binding method and predicted the existence of localized states in such a system. F. Kh. Abdullaev actively developed the theory of localized modes in nonlinear lattices, including dissipative discrete solitons in Ablowitz – Ladik systems, discrete nonlinear Schrödinger equation and the Toda chain.
Abdullaev F. Kh. is invited for joint work in the leading scientific Institutions and Universities in the world. Since 1987, he has been working as a visiting Professor in leading research centers in Australia, England, Germany, Brazil, Greece, Denmark, Italy, Spain, Malaysia, Portugal, USA, Finland, France and Japan.
Abdullaev Fatkhulla Khabibullaevich pays great attention to the education of young scientists. All these years he, in parallel with scientific work and the management of scientific activity with his companion in labour, also engaged in teaching activity. He gives a lecture on classical and quantum mechanics, quantum field theory, chaotic and nonlinear mechanics at the Physics Department, National University of Uzbekistan named after M. Ulugbek. He prepared 12 candidates of Sciences, and he was a consultant of two doctoral dissertations. He created a world-recognized scientific school on nonlinear physics. His students work productively in Uzbekistan and foreign countries, and themselves have become well-known experts in this field of science.
To date, about 300 of his scientific works have been published in the world's leading physical journals. He has written reviews for scientific journals such as Physics Reports, Progress in Optics, International Journal of Modern Physics, and articles in the Physical Review series A, B, and E, Physics Letters, Optics Letters, Optics Communications, Journal of Optical Society of America, Journal of Physics B, and a number of others.  In addition, during these years he published 4 monographs on topical issues of modern physics.
Abdullayev was the organizer of a number of international scientific conferences in Tashkent. On his initiative in 1990 (Nonlinearity and Disorder) and 2000 (Nonlinearity with Disorder: Theory and Applications) international conferences devoted to nonlinear and chaotic phenomena were held in Tashkent. He was a guest speaker at 25 international conferences held in the USA, Germany, France, Italy, Portugal, Spain, Brazil. In many of these conferences, he was a member of the organizing Committee.
Abdullayev was awarded many times national and international grants for conducting scientific research on fundamental problems of nonlinear physics. Only international grants, such as CRDF, INTAS, ISF, NATO, JSPS, he received more than ten times.
Abdullayev successfully combines the talent of researcher, organizer and teacher. He is a born leader, he is distinguished by a special insight, sharpness and independence of thinking. High demands on himself and others are combined with a friendly attitude to friends and colleagues. He has a great sense of humor and cheerfulness.