2k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Russian Academy of SciencesRU151 papers
- University of TrentoIT90 papers
- National Research University Higher School of EconomicsRU47 papers
- Moscow Institute of Physics and TechnologyRU45 papers
- ETH ZurichCH32 papers
- Istituto Nazionale per la Fisica della MateriaIT27 papers
- Laboratory for Solid State PhysicsCH26 papers
- Institute of PhysicsPL22 papers
- Landau Institute for Theoretical PhysicsRU20 papers
- A.V. Shubnikov Institute of CrystallographyRU17 papers
- Technion – Israel Institute of TechnologyIL16 papers
- University of AugsburgDE16 papers
24 papers · 1 filter
Stabilization of Solitons Generated by a Supersonic Flow of Bose-Einstein Condensate Past an Obstacle
A. M. Kamchatnov, L. P. Pitaevskii
Stability of dark solitons generated by a supersonic flow of Bose-Einstein condensate past an obstacle is investigated. It is shown that in the reference frame attached to the obst…
How to realize "a sense of humour" in computers ?
I. M. Suslov
Computer model of a "sense of humour" suggested previously [arXiv:0711.2058, 0711.2061, 0711.2270] is raised to the level of a realistic algorithm.
Can a Computer Laugh ?
I. M. Suslov
A computer model of "a sense of humour" suggested previously [arXiv:0711.2058,0711.2061], relating the humorous effect with a specific malfunction in information processing, is giv…
Computer Model of a "Sense of Humour". II. Realization in Neural Networks
I. M. Suslov
The computer realization of a "sense of humour" requires the creation of an algorithm for solving the "linguistic problem", i.e. the problem of recognizing a continuous sequence of…
Computer Model of a "Sense of Humour". I. General Algorithm
I. M. Suslov
A computer model of a "sense of humour" is proposed. The humorous effect is interpreted as a specific malfunction in the course of information processing due to the need for the ra…
On the Critical Exponents for the Λ-Transition in Liquid Helium
A. A. Pogorelov, I. M. Suslov
The use of a new method for summing divergent series makes it possible to significantly increase the accuracy of determining the critical exponents from the field theoretical renor…
Renormalization Group Functions for Two-Dimensional Phase Transitions: To the Problem of Singular Contributions
A. A. Pogorelov, I. M. Suslov
According to the available publications, the field theoretical renormalization group (RG) approach in the two-dimensional case gives the critical exponents that differ from the kno…
Spin-liquid dynamics of pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7
S. S. Sosin, L. A. Prozorova, A. I. Smirnov +3
The spin-liquid phase of two highly frustrated pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7 is probed using electron spin resonance in the temperature range 1.3 - 30 K. The deviation o…
Longitudinal and Transverse NMR in Superfluid 3He in Anisotropic Aerogel
V. V. Dmitriev, D. A. Krasnikhin, N. Mulders +2
It was found that NMR properties of both superfluid phases of He in anisotropic aerogel can be described in terms of the bulk superfluid order parameters with the orbital order…
Soliton-like Spin State in the A-like Phase of 3He in Anisotropic Aerogel
V. V. Dmitriev, D. A. Krasnikhin, N. Mulders +1
We have found a new stable spin state in the A-like phase of superfluid 3He confined to intrinsically anisotropic aerogel. The state can be formed by radiofrequency excitation appl…
Equilibrium and dynamics of a trapped superfluid Fermi gas with unequal masses
G. Orso, L. P. Pitaevskii, S. Stringari
Interacting Fermi gases with equal populations but unequal masses are investigated at zero temperature using local density approximation and the hydrodynamic theory of superfluids…
Triplet spin resonance of the Haldane compound with interchain coupling
A. I. Smirnov, V. N. Glazkov, T. Kashiwagi +5
Spin resonance absorption of the triplet excitations is studied experimentally in the Haldane magnet PbNi2V2O8. The spectrum has features of spin S=1 resonance in a crystal field,…
Quantum turbulence in propagating superfluid vortex front
V. B. Eltsov, A. I. Golov, R. de Graaf +4
We present experimental, numerical and theoretical studies of a vortex front propagating into a region of vortex-free flow of rotating superfluid 3He-B. We show that the nature of…
Model calculation of orientational effect of deformed aerogel on the order parameter of superfluid 3He
E. V. Surovtsev, I. A. Fomin
Theory of Rainer and Vuorio of small objects in superfluid ^3He is applied for calculation of the average orientational effect of a deformed aerogel on the order parameter of 3He.…
Global strings in extra dimensions: a full map of solutions, matter trapping and the hierarchy problem
K. A. Bronnikov, B. E. Meierovich
We consider (d_0+2)-dimensional configurations with global strings in the two extra dimensions and a flat metric in d_0 dimensions, endowed with a warp factor e^{2γ} depending on t…
Long-range order in the A-like phase of superfluid 3He in aerogel
I. A. Fomin
A mutual action of the random anisotropy brought in the superfluid 3He by aerogel and of the global anisotropy caused by its deformation is considered. Strong global anisotropy ten…
Number fluctuations in cold quantum gases
G. E. Astrakharchik, R. Combescot, L. P. Pitaevskii
In ultracold gases many experiments use atom imaging as a basic observable. The resulting image is averaged over a number of realizations and mostly only this average is used. Only…
On Sound Reflection in Superfluid
L. A. Melnikovsky
We consider reflection of the first and the second sound waves by a rigid flat wall in superfluid. Nontrivial dependence of the reflection coefficients on the angle of incidence is…
Theory of ultracold Fermi gases
Stefano Giorgini, Lev P. Pitaevskii, Sandro Stringari
The physics of quantum degenerate Fermi gases in uniform as well as in harmonically trapped configurations is reviewed from a theoretical perspective. Emphasis is given to the effe…
Casimir-Lifshitz force out of thermal equilibrium
Mauro Antezza, Lev P. Pitaevskii, Sandro Stringari +1
We study the Casimir-Lifshitz interaction out of thermal equilibrium, with particular attention devoted to the surface-surface and surface-atom configurations. A systematic investi…
Dark solitons in a superfluid Fermi gas
Mauro Antezza, Franco Dalfovo, Lev P. Pitaevskii +1
We investigate the behavior of dark solitons in a superfluid Fermi gas along the BCS-BEC crossover by solving the Bogoliubov - de Gennes equations and looking for real and odd solu…
Supersolidity of glasses
A. F. Andreev
Supersolidity of glasses is explained as a property of an unusual state of condensed matter. This state is essentially different from both normal and superfluid solid states. The m…
Absence of low temperature anomaly on the melting curve of He
I. A. Todoshchenko, H. Alles, H. J. Junes +2
We have measured the melting pressure and pressure in the liquid at constant density of ultra-pure He (0.3 ppb of He impurities) with the accuracy of about 0.5 bar in th…
On the interpretation of muon-spin-rotation experiments in the mixed state of type-II superconductors
I. L. Landau, H. Keller
We argue that claims about magnetic field dependence of the magnetic field penetration depth lambda, which were made on the basis of moun-spin-rotation studies of some superconduct…