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MUSE observations of a changing-look AGN I: The re-appearance of the broad emission linesMar 20 2019Optical changing-look Active Galactic Nuclei (AGN) are a class of sources that change type within a short timescale of years or decades. This change is characterised by the appearance or disappearance of broad emission lines, often associated with dramatic ... More

MUSE observations of a changing-look AGN I: The re-appearance of the broad emission linesMar 20 2019Mar 26 2019Optical changing-look Active Galactic Nuclei (AGN) are a class of sources that change type within a short timescale of years or decades. This change is characterised by the appearance or disappearance of broad emission lines, often associated with dramatic ... More

The gas content of peculiar galaxies: strongly interacting systemsMay 06 2004A study of the gas content in 1038 interacting galaxies, essentially selected from Arp, Arp and Madore, Vorontsov-Velyaminov catalogues and some of the published literature, is presented here. The data on the interstellar medium have been extracted from ... More

Molecular gas and star formation in M81Jun 26 2007We present IRAM 30m observations of the central 1.6 kpc of the spiral M81 galaxy. The molecular gas appears weak and with an unusual excitation physics. We discuss a possible link between low CO emission and weak FUV surface brightness.

Metallicity gradients in Local Universe galaxies: time evolution and effects of radial migrationFeb 08 2016Our knowledge of the shape of radial metallicity gradients in disc galaxies has recently improved. Conversely, the understanding of their time evolution is more complex, since it requires analysis of stellar populations with different ages, or systematic ... More

Molecular clouds in the center of M81Jul 28 2007We investigate the molecular gas content and the excitation and fragmentation properties in the central region of the spiral galaxy Messier 81 in both the ^{12}CO(1-0) and ^{12}CO(2-1) transitions. We have recently observed the two transitions of CO in ... More

Relations between ISM tracers in galaxiesSep 26 2006We study the relations existing between fluxes emitted at CO(1-0) line, 60 and 100 micron wavelengths, B and soft X-ray wavebands for galaxies of all morphological types. The large set of data that we created allows to revisit some of known relations ... More

Study of ISM tracers in galaxiesDec 05 2006We collected data for two samples of normal and interacting galaxies for a total of 2953 galaxies having fluxes in one or more of the following wavebands: FIR, 21 cm line, CO(1-0) lines and soft X-ray. The large set of data obtained allowed us to revisit ... More

DustPedia - the relationships between stars, gas and dust for galaxies residing in different environmentsApr 30 2019We use a sub-set of the DustPedia galaxy sample (461 galaxies) to investigate the effect the environment has had on galaxies. We consider Virgo cluster and field samples and also assign a density contrast parameter to each galaxy, as defined by the local ... More

The NUGA project: The Seyfert 2 galaxy NGC3147Dec 03 2007We present CO(1-0) and CO(2-1) maps of the Seyfert 2 galaxy NGC3147 of the NUclei of GAlaxies (NUGA) sample at 1.8'' x 1.6'' and 1.4'' x 1.2'' resolution respectively. Identifying the presence of a bar in NGC3147 we also compute the gravity torques exerted ... More

Molecular Gas in NUclei of GAlaxies (NUGA). X. The Seyfert 2 galaxy NGC 3147Aug 08 2008We present CO(1-0) and CO(2-1) observations of the SA(rs)bc Seyfert 2 galaxy NGC 3147, obtained with the IRAM interferometer at 1\farcs9 $\times$1\farcs6 and 1\farcs6 $\times$1\farcs4 resolutions, respectively. A central peak seen mainly in CO(2-1) and ... More

A gas-rich AGN near the centre of a galaxy cluster at z ~ 1.4Jul 17 2013Jul 29 2013The formation of the first virialized structures in overdensities dates back to ~9 Gyr ago, i.e. in the redshift range z ~ 1.4 - 1.6. Some models of structure formation predict that the star formation activity in clusters was high at that epoch, implying ... More

Are truncated stellar disks linked to the molecular gas density?Feb 01 2007We know that the slope of the radial, stellar light distribution in galaxies is well described by an exponential decline and this distribution is often truncated at a break radius ($R_{br}$). We don't have a clear understanding for the origin of these ... More

Molecular Gas in NUclei of GAlaxies (NUGA) XIV. The barred LINER/Seyfert 2 galaxy NGC 3627Jan 13 2011We present CO(1-0) and CO(2-1) maps of the interacting barred LINER/Seyfert 2 galaxy NGC 3627 obtained with the IRAM interferometer at resolutions of 2.1" x 1.3" and 0.9" x 0.6", respectively. The molecular gas emission shows a nuclear peak, an elongated ... More

ALMA Probes the Molecular Gas Reservoirs in the Changing-Look Seyfert Galaxy Mrk 590Sep 30 2015Oct 23 2015We investigate if the active galactic nucleus (AGN) of Mrk 590, whose supermassive black hole was until recently highly accreting, is turning off due to a lack of central gas to fuel it. We analyse new sub-arcsecond resolution ALMA maps of the $^{12}$CO(3-2) ... More

Molecular Gas in NUclei of GAlaxies (NUGA) XIII. The interacting Seyfert 2/LINER galaxy NGC 5953Nov 19 2009We present $^{12}$CO(1--0) and $^{12}$CO(2--1) maps of the interacting Seyfert 2/LINER galaxy NGC 5953 obtained with the IRAM interferometer at resolutions of 2\farcs1 $\times$ 1\farcs4 and 1\farcs1 $\times$ 0\farcs7, respectively. The CO emission is ... More

ALMA reveals the feeding of the Seyfert 1 nucleus in NGC 1566Jan 16 2014Mar 13 2014We report ALMA observations of CO(3-2) emission in the Seyfert 1 galaxy NGC 1566, at a spatial resolution of 25 pc. Our aim is to investigate the morphology and dynamics of the gas inside the central kpc, and to probe nuclear fueling and feedback phenomena. ... More

Physical conditions of the molecular gas in metal-poor galaxiesApr 18 2017Aug 11 2017Studying the molecular component of the interstellar medium in metal-poor galaxies has been challenging because of the faintness of carbon monoxide emission, the most common proxy of H2. Here we present new detections of molecular gas at low metallicities, ... More

New views on bar pattern speeds from the NUGA surveyNov 12 2008We present a review on bar pattern speeds from preliminary results in the context of the Nuclei of Galaxies (NUGA) project. The large variety of molecular circumnuclear morphologies found in NUGA is a challenging result that implies the refinement of ... More

ALMA observations of cool dust in a low-metallicity starburst, SBS0335-052Dec 03 2013We present Atacama Large Millimeter/submillimeter Array (ALMA) Cycle 0 Band 7 observations of an extremely metal-poor dwarf starburst galaxy in the Local Universe, SBS0335-052 (12+log(O/H)~7.2). With these observations, dust is detected at 870micron (ALMA ... More

Molecular depletion times and the CO-to-H2 conversion factor in metal-poor galaxiesSep 16 2015Tracing molecular hydrogen content with carbon monoxide in low-metallicity galaxies has been exceedingly difficult. Here we present a new effort, with IRAM 30-m observations of 12CO(1-0) of a sample of 8 dwarf galaxies having oxygen abundances ranging ... More

ALMA observations of feeding and feedback in nearby Seyfert galaxies: an AGN-driven outflow in NGC 1433Sep 28 2013Mar 21 2014We report ALMA observations of CO(3-2) emission in the Seyfert 2 double-barred galaxy NGC1433, at the unprecedented spatial resolution of 0.5"=24 pc. Our aim is to probe AGN feeding and feedback phenomena through the morphology and dynamics of the gas ... More

Gas-phase oxygen abundances and radial metallicity gradients in the two nearby spiral galaxies NGC7793 and NGC4945Aug 11 2015Gas-phase abundances in HII regions of two spiral galaxies, NGC7793 and NGC4945, have been studied to determine their radial metallicity gradients. We used the strong-line method to derive oxygen abundances from spectra acquired with GMOS-S, the multi-object ... More

ALMA captures feeding and feedback from the active galactic nucleus in NGC613May 06 2019We report ALMA observations of CO(3-2) emission in the Seyfert galaxy NGC613, at a spatial resolution of 17pc, as part of our NUclei of GAlaxies sample. Our aim is to investigate the morphology and dynamics of the gas inside the central kpc, and to probe ... More

ALMA observations of molecular tori around massive black holesNov 02 2018Feb 12 2019We report ALMA observations of CO(3-2) emission in a sample of 7 Seyfert/LINER galaxies at the unprecedented spatial resolution of 0.1'' = 4-9 pc. Our aim is to explore the close environment of AGN, and the dynamical structures leading to its fueling. ... More

The resolved star-formation relation in nearby active galactic nucleiMar 01 2015Mar 13 2015We present an analysis of the relation between star formation rate (SFR) surface density (sigmasfr) and mass surface density of molecular gas (sigmahtwo), commonly referred to as the Kennicutt-Schmidt (K-S) relation, at its intrinsic spatial scale, i.e. ... More

Old and young stellar populations in DustPedia galaxies and their role in dust heatingMar 14 2019Within the framework of the DustPedia project we investigate the properties of cosmic dust and its interaction with the stellar radiation (originating from different stellar populations) for 814 galaxies in the nearby Universe, all observed by the Herschel ... More

DustPedia - A Definitive Study of Cosmic Dust in the Local UniverseSep 20 2016The European Space Agency has invested heavily in two cornerstones missions; Herschel and Planck. The legacy data from these missions provides us with an unprecedented opportunity to study cosmic dust in galaxies so that we can answer fundamental questions ... More

Old and young stellar populations in DustPedia galaxies and their role in dust heatingMar 14 2019Apr 16 2019Within the framework of the DustPedia project we investigate the properties of cosmic dust and its interaction with the stellar radiation (originating from different stellar populations) for 814 galaxies in the nearby Universe, all observed by the Herschel ... More

The radial metallicity gradient and the history of elemental enrichment in M81 through emission-line probesMar 21 2014Mar 27 2014We present a new set of weak-line abundances of HII regions in M81, based on Gemini Multi-Object Spectrograph (GMOS) observations. The aim is to derive plasma and abundance analysis for a sizable set of emission-line targets to study the galactic chemical ... More

A systematic metallicity study of DustPedia galaxies reveals evolution in the dust-to-metal ratiosJan 25 2019Observations of evolution in the dust-to-metal ratio allow us to constrain the dominant dust processing mechanisms. In this work, we present a study of the dust-to-metal and dust-to-gas ratios in a sub-sample of ~500 DustPedia galaxies. Using literature ... More

Multi-frequency polarimetry of a complete sample of PACO radio sourcesNov 23 2016We present high sensitivity polarimetric observations in 6 bands covering the 5.5-38 GHz range of a complete sample of 53 compact extragalactic radio sources brighter than 200 mJy at 20 GHz. The observations, carried out with the Australia Telescope Compact ... More

Italian Science Case for ALMA Band 2+3Sep 09 2015Sep 11 2015The Premiale Project "Science and Technology in Italy for the upgraded ALMA Observatory - iALMA" has the goal of strengthening the scientific, technological and industrial Italian contribution to the Atacama Large Millimeter/submillimeter Array (ALMA), ... More

Radial distribution of dust, stars, gas, and star-formation rate in DustPedia face-on galaxiesJun 16 2017The purpose of this work is the characterization of the radial distribution of dust, stars, gas, and star-formation rate (SFR) in a sub-sample of 18 face-on spiral galaxies extracted from the DustPedia sample. This study is performed by exploiting the ... More

The fraction of bolometric luminosity absorbed by dust in DustPedia galaxiesOct 02 2018We study the fraction of stellar radiation absorbed by dust, f_abs, in 814 galaxies of different morphological types. The targets constitute the vast majority (93%) of the DustPedia sample, including almost all large (optical diameter larger than 1'), ... More

The Science Case for ALMA Band 2 and Band 2+3Feb 07 2016Aug 14 2017We discuss the science drivers for ALMA Band 2 which spans the frequency range from 67 to 90 GHz. The key science in this frequency range are the study of the deuterated molecules in cold, dense, quiescent gas and the study of redshifted emission from ... More

Molecular line emission in NGC1068 imaged with ALMA. I An AGN-driven outflow in the dense molecular gasMay 28 2014Jun 13 2014We investigate the fueling and the feedback of star formation and nuclear activity in NGC1068, a nearby (D=14Mpc) Seyfert 2 barred galaxy, by analyzing the distribution and kinematics of the molecular gas in the disk. We have used ALMA to map the emission ... More

Molecular line emission in NGC1068 imaged with ALMA: II. The chemistry of the dense molecular gasJul 18 2014We present a detailed analysis of ALMA Bands 7 and 9 data of CO, HCO+, HCN and CS, augmented with Plateau de Bure Interferometer (PdBI) data of the ~ 200 pc circumnuclear disk (CND) and the ~ 1.3 kpc starburst ring (SB ring) of NGC~1068, a nearby (D = ... More

Dust emission profiles of DustPedia galaxiesNov 21 2018Most radiative transfer models assume that dust in spiral galaxies is distributed exponentially. In this paper our goal is to verify this assumption by analysing the two-dimensional large-scale distribution of dust in galaxies from the DustPedia sample. ... More

DustPedia: Multiwavelength Photometry and Imagery of 875 Nearby Galaxies in 42 Ultraviolet--Microwave BandsAug 17 2017The DustPedia project is capitalising on the legacy of the Herschel Space Observatory, using cutting-edge modelling techniques to study dust in the 875 DustPedia galaxies - representing the vast majority of extended galaxies within 3000 km s$^{-1}$ that ... More

ALMA resolves the torus of NGC 1068: continuum and molecular line emissionApr 01 2016May 04 2016We have used the Atacama Large Millimeter Array (ALMA) to map the emission of the CO(6-5) molecular line and the 432 {\mu}m continuum emission from the 300 pc-sized circumnuclear disk (CND) of the nearby Seyfert 2 galaxy NGC 1068 with a spatial resolution ... More

The Herschel Virgo Cluster Survey. XX. Dust and gas in the foreground Galactic cirrusSep 19 2016We study the correlation between far-infared/submm dust emission and atomic gas column density in order to derive the properties of the high Galactic latitude, low density, Milky Way cirrus in the foreground of the Virgo cluster of galaxies. Dust emission ... More

The Science Case for ALMA Band 2 and Band 2+3Feb 07 2016We discuss the science drivers for ALMA Band 2 which spans the frequency range from 67 to 90 GHz. The key science in this frequency range are the study of the deuterated molecules in cold, dense, quiescent gas and the study of redshifted emission from ... More

ALMA reveals a warm and compact starburst around a heavily obscured supermassive black hole at z=4.75Dec 04 2013Jan 07 2014We report ALMA Cycle 0 observations at 1.3mm of LESS J033229.4-275619 (XID403), an Ultraluminous Infrared Galaxy at $z=4.75$ in the Chandra Deep Field South hosting a Compton-thick QSO. The source is not resolved in our data at a resolution of $\sim$0.75 ... More

Molecular outflow and feedback in the obscured Quasar XID2028 revealed by ALMADec 12 2017Jan 31 2018We imaged with ALMA and ARGOS/LUCI the molecular gas and the dust and stellar continuum in XID2028, an obscured QSO at z=1.593, where the presence of a massive outflow in the ionized gas component traced by the [O III]5007 emission has been resolved up ... More

Molecular gas and nuclear activity in early-type galaxies: any link with radio-loudness?Dec 02 2014Aims. We want to study the amount of molecular gas in a sample of nearby early-type galaxies (ETGs) which host low-luminosity Active Galactic Nuclei (AGN). We look for possible differences between the radio-loud (RL) and radio-quiet (RQ) AGN. Methods. ... More

Quantum dynamics of nuclear spins and spin relaxation in organic semiconductorsJul 06 2016We investigate the role of the nuclear spin quantum dynamics in hyperfine-induced spin relaxation of hopping carriers in organic semiconductors. The fast hopping regime with a small carrier spin precession during a waiting time between hops is typical ... More

Two-dimensional model of intrinsic magnetic flux losses in helical flux compression generatorsSep 25 2012Helical Flux Compression Generators (HFCG) are used for generation of mega-amper current and high magnetic fields. We propose the two dimensional HFCG filament model based on the new description of the stator and armature contact point. The model developed ... More

Realistic model of correlated disorder and Anderson localizationApr 01 1999A conducting 1D chain or 2D film inside (or on the surface of) an insulator is considered. Impurities displace the charges inside the insulator. This results in a long-range fluctuating electric field acting on the conducting line (plane). This field ... More

Morita invariance of the filter dimension and of the inequality of BernsteinOct 29 2006It is proved that the filter dimenion is Morita invariant. A direct consequence of this fact is the Morita invariance of the inequality of Bernstein: if an algebra $A$ is Morita equivalent to the ring $\CD (X)$ of differential operators on a smooth irreducible ... More

Hyperfine-induced spin relaxation of a diffusively moving carrier in low dimensions: implications for spin transport in organic semiconductorsMar 27 2015The hyperfine coupling between the spin of a charge carrier and the nuclear spin bath is a predominant channel for the carrier spin relaxation in many organic semiconductors. We theoretically investigate the hyperfine-induced spin relaxation of a carrier ... More

Double resonant processes in $χ^{(2)}$ nonlinear periodic mediaAug 07 2000In a one-dimensional periodic nonlinear $\chi^{(2)}$ medium, by choosing a proper material and geometrical parameters of the structure, it is possible to obtain two matching conditions for simultaneous generation of second and third harmonics. This leads ... More

Neutron Diffraction and Optics of a Noncentrosymmetric Crystal. New Feasibility of a Search for Neutron EDMApr 25 2005May 03 2005Recently strong electric fields (up to 10^9 V/cm) have been discovered, which affect the neutrons moving in noncentrosymmetric crystals. Such fields allow new polarization phenomena in neutron diffraction and optics and provide, for instance, a new feasibility ... More

A remark on the Dixmier ConjectureNov 30 2018The Dixmier Conjecture says that every endomorphism of the (first) Weyl algebra $A_1$ (over a field of characteristic zero) is an automorphism, i.e., if $PQ-QP=1$ for some $P, Q \in A_1$ then $A_1 = K \langle P, Q \rangle$. The Weyl algebra $A_1$ is a ... More

On the irreducible representation algebra of the alternating group of degree fourOct 05 2010We obtain a description of the irreducible representation algebra of the alternating group of degree four over the ring of 2-adic integers.

On Participants Number Fluctuations for Given Centrality AA-Interactions in the Classical Glauber ApproachFeb 14 2007In the framework of the classical Glauber approach the exact analytical expression for the variance of the number of participants (wounded nucleons) for given centrality AA interactions is presented. It's shown, that in the case of nucleus-nucleus collisions ... More

Time dynamics in chaotic many-body systems: can chaos destroy a quantum computer?Nov 15 1999Highly excited many-particle states in quantum systems (nuclei, atoms, quantum dots, spin systems, quantum computers) can be ``chaotic'' superpositions of mean-field basis states (Slater determinants, products of spin or qubit states). This is a result ... More

Predictions of chiral perturbation theory for Compton scattering off protonsMay 24 2009We compute the Compton scattering off the nucleons in the framework of manifestly covariant baryon chiral perturbation theory (B$\chi$PT). The results for observables differ substantially from the corresponding calculations in heavy-baryon chiral perturbation ... More

Analysis of network by generalized mutual entropiesSep 06 2007Generalized mutual entropy is defined for networks and applied for analysis of complex network structures. The method is tested for the case of computer simulated scale free networks, random networks, and their mixtures. The possible applications for ... More

Generalized entropies and open random and scale-free networksSep 13 2007We propose the concept of open network as an arbitrary selection of nodes of a large unknown network. Using the hypothesis that information of the whole network structure can be extrapolated from an arbitrary set of its nodes, we use Renyi mutual entropies ... More

Properties of the quark-antiquark-gluon Fock state in the η_c mesonJan 29 2012In this paper the twist-3 distribution amplitude of the quark-antiquark-gluon Fock state in the \eta_c meson is studied. To calculate the moments of this distribution amplitude QCD sum rules is applied. Using the results of the calculation the model of ... More

Spontaneous creation of chromomagnetic field and A_0-condensate at high temperature on a latticeNov 19 2007In a lattice formulation of SU(2)-gluodynamics, the spontaneous generation of chromomagnetic fields at high temperature is investigated. A procedure to determine this phenomenon is developed. By means of the $\chi^2$-analysis of the data set accumulating ... More

Two-stream Instability in Pulsar MagnetospheresApr 24 2002Creation of electron-positron pairs near the pulsar surface and the parameters of plasma in pulsar magnetospheres are discussed. It is argued that the pair creation process is nonstationary, and the pair plasma that flows out from the pulsar environment ... More

Thermalization of neutrons at ultracold nanoparticles to the energy range of ultracold neutronsMar 11 2005Two hypothesizes concerning interaction of neutrons with nanoparticles and having applications in the physics of ultracold neutron (UCN) were recently considered in ref. [Physics of Atomic Nuclei 65(3): 400 (2002)]; they were motivated by the experimental ... More

High-order optical processes: towards nonperturbative nonlinear opticsApr 29 2015We develop an approach describing nonlinear-optical processes in the strong-field domain characterized by the nonperturbative field-with-matter interaction. The polarization of an isolated atom in the external field calculated via the numerical solution ... More

Construction of separately continuous functions of $n$ variables with given restrictionFeb 01 2016It is solved the problem on construction of separately continuous functions on product of $n$ topological spaces with given restriction. In particular, it is shown that for every topological space $X$ and $n-1$ Baire class function $g:X\to \mathbb R$ ... More

Baire classification of separately continuous functions and Namioka propertyJan 20 2016We prove the following two results. 1. If $X$ is a completely regular space such that for every topological space $Y$ each separately continuous function $f:X\times Y\to\mathbb R$ is of the first Baire class, then every Lindel\"of subspace of $X$ bijectively ... More

Lebesgue measurability of separately continuous functions and separabilityDec 23 2015It is studied a connection between the separability and the countable chain condition of spaces with the $L$-property (a topological space $X$ has the $L$-property if for every topological space $Y$, separately continuous function $f:X\times Y\to\mathbb ... More

Construction of separately continuous functions with given restrictionJan 29 2016It is solved the problem on constructed of separately continuous functions on product of two topological spaces with given restriction. In particular, it is shown that for every topological space $X$ and first Baire class function $g:X\to \bf R$ there ... More

Separate continuity topology and a generalization of Sierpinski's theoremJan 27 2016The separately continuity topology is considered and some its properties are investigated. With help of these properties a generalization of Sierpinski theorem on determination of real separately continuous function by its values on an arbitrary dense ... More

Spin-charge separation and Kondo effect in transport through a 1D Mott-Hubbard insulatorMay 19 2011We study low energy spin and charge transport through a 1D Mott-Hubbard insulator of finite length $L$ attached to Fermi liquid reservoirs characterized by different chemical potentials for electrons of opposite spin polarizations as it happens in quantum ... More

Alternative set of defining constants for redefinition of four SI unitsJul 08 2016We discuss different sets of defining constants, fixed values of which are considered in connection with the transition to new definitions of four SI units (the kilogram, the mole, the ampere, and the kelvin). The notion of constant's order in a given ... More

Residual HCRF Rotation relative to the Inertial Coordinate SystemFeb 28 2015VLBI measurements of the absolute proper motions of 23 radio stars have been collected from published data. These are stars with maser emission, or very young stars, or asymptotic-giant-branch stars. By comparing these measurements with the stellar proper ... More

The proper characteristics of frame reference as a 4-invariantsJun 02 2015The paper derived 4-dimensional equation for the proper characteristics of the rigid frame of reference. From these conditions it follows the laws of motion of its proper tetrad and inverse kinematics equation, i. e., differential equations, which solves ... More

Energy and system-size dependence of the Chiral Magnetic EffectNov 25 2010The energy dependence of the local ${\cal P}$ and ${\cal CP}$ violation in Au+Au and Cu+Cu collisions in a large energy range is estimated within a simple phenomenological model. It is expected that at LHC the chiral magnetic effect will be about 20 times ... More

Weakly left localizable ringsAug 24 2014A new class of rings, {\em the class of weakly left localizable rings}, is introduced. A ring $R$ is called {\em weakly left localizable} if each non-nilpotent element of $R$ is invertible in some left localization $S^{-1}R$ of the ring $R$. Explicit ... More

An analogue of the Conjecture of Dixmier is true for the algebra of polynomial integro-differential operatorsNov 12 2010Let $A_1:=K\langle x, \frac{d}{dx} \rangle$ be the Weyl algebra and $\mI_1:= K\langle x, \frac{d}{dx}, \int \rangle$ be the algebra of polynomial integro-differential operators over a field $K$ of characteristic zero. The Conjecture/Problem of Dixmier ... More

Lie algebras of triangular polynomial derivations and an isomorphism criterion for their Lie factor algebrasApr 22 2012Nov 11 2012The ideals of the Lie algebras of unitriangular polynomial derivations are classified. An isomorphism criterion is given for the Lie factor algebras of the Lie algebras of unitriangular polynomial derivations.

Ion-Acoustic Solitons in Bi-Ion Dusty PlasmaDec 02 2008The propagation of ion-acoustic solitons in a warm dusty plasma containing two ion species is investigated theoretically. Using an approach based on the Korteveg-de-Vries equation, it is shown that the critical value of the negative ion density that separates ... More

Energy loss by the arbitrary moving charged particle in classical electrodynamicsJan 02 2013Jan 18 2013The energy-impulse flow of electromagnetic field, produced by the arbitrary moving charged particle, through the sphere of large radius is calculated. The result formulae are used in problem of radiation produced by hyperbolically moving particle and ... More

Hydrodynamic view in the NICA energy rangeSep 14 2008Results for penetrating probes treated within a hybrid hydro-kinetic model are projected onto the energy range covered by the NICA and FAIR projects. A new source of dileptons emitted from a mixed quark-hadron phase, quark-hadron bremsstrahlung, is proposed. ... More

The non-perturbative equation of state for gluon matterDec 01 2007In order to derive equation of state for the pure SU(3) Yang-Mills fields from first principles, it is proposed to generalize the effective potential approach for composite operators to non-zero temperatures. It is essentially non-perturbative by construction, ... More

On algebraic structure of matter spectrumAug 04 2016An algebraic structure of matter spectrum is studied. It is shown that a base mathematical construction, lying in the ground of matter spectrum (introduced by Heisenberg) , is a two-level Hilbert space. Two-level structure of the Hilbert space is defined ... More

Log Adjunction: effectiveness and positivityAug 23 2013This is a first instalment of much larger work about relations between birational geometry and moduli of triples. The extraction of work is mainly related to Theorem 6. It is a weak version of Kawamata's Conjecture 1 and an important technical step toward ... More

Normal zone propagation along superconducting films deposited on wide substratesMar 06 2007The propagation of a normal zone in a long superconducting film on a dielectric or conducting substrate is analyzed analytically. The obtained expressions for the propagation velocity allow one to analyze the effect of the thermal resistance between the ... More

Thermal state of superconducting films on wide substratesJul 05 2006The stationary thermal state and propagation of a normal zone in a long superconducting film on a wide substrate are analyzed analytically. Expressions describing voltage-current characteristics and temperature-current dependence of the film are derived ... More

Some recent results in calculating the Casimir energy at zero and finite temperatureNov 01 2002The survey summarizes briefly the results obtained recently in the Casimir effect studies considering the following subjects: i) account of the material characteristics of the media and their influence on the vacuum energy (for example, dilute dielectric ... More

Breaking a "poor man" RG approach in the Luttinger liquid with one impurityApr 16 2016The method of summation of infrared logarithms for reflection coefficient in one-dimensional channel with impurity is suggested. The method is based on the original formulation of Gell-Mann-Low renormalization group. On the level of 2 loops results are ... More

Vector field and rotational curves in dark galactic halosApr 09 2004May 17 2004We study equations of a non-gauge vector field in a spherically symmetric static metric. The constant vector field with a scale arrangement of components: the time component about the Planck mass m_{Pl} and the radial component about M suppressed with ... More

Acceleration parameter of the Universe expansion and cosmological equation of stateAug 08 2003Nov 14 2003This paper has been withdrawn by the author, due an error in Eq.(4.4), wherein a term of cosmological constant added into a theory of gravitation by Ref.[8], in which such the term is truly forbidden.

Gold-plated Mode of CP-Violation in Decays of B_c Meson from QCD Sum RulesFeb 26 2003The model-independent method based on the triangle ideology is implemented to extract the CKM-matrix angle gamma in the decays of doubly heavy long-lived meson B_c. We analyze a color structure of diagrams and conditions to reconstruct two reference-triangles ... More

Hard approximation in two-particle hadronic decays of B_c at large recoilsMay 31 1996Oct 08 2001The two-particle decays of B_c^+ to psi pi^+(rho^+) and B_c^+ to eta_c pi^+(rho^+) are considered in a way taking into account a soft binding of quarks in the heavy quarkonia and a hard gluon exchange between the constituents at large recoil momenta of ... More

f_B^{stat} and μ_π^2 in quasiclassical approximation of sum rulesFeb 21 1996In the framework of sum rules with a use of quarkonium mass spectrum, evaluated in the quasiclassical approximation, estimates of leptonic constant $f_B^{stat}\simeq 320\pm 60$ MeV in a static limit and for the average heavy quark momentum squared $\mu_\pi^2 ... More

Alpha_s from spectroscopy of psi- and Upsilon-particles in QCD sum rulesSep 13 1994In a specific scheme of the QCD sum rules, one gives the estimate of $\alpha_S\simeq 0.20$ from the data on the masses and leptonic constants of $\psi$- and $\Upsilon$-particles.

Scaling Properties of $S$-wave Level Density for Heavy Quarkonium from QCD Sum RulesJul 26 1994In the framework of a specific scheme of the QCD sum rules for $S$-wave levels of the heavy quarkonium, one derives an expression, relating the energetic density of quarkonium states and universal characteristics in the heavy quarkonium physics, such ... More

Quantum black hole and Hawking radiation at microscopic magnifyingJun 01 2005We establish a state of stopping the Hawking radiation by quantum Schwarzschild black hole in the framework of quasi-classical thermal quantization for particles behind the horizon. The mechanism of absorption and radiation by the black hole is presented. ... More

Ghost condensate model of flat rotation curvesJun 22 2004Jul 05 2004An effective action of ghost condensate with higher derivatives creates a source of gravity and mimics a dark matter in spiral galaxies. We present a spherically symmetric static solution of Einstein--Hilbert equations with the ghost condensate at large ... More

Strong CP theta-problem in QCD and local gluon condensateApr 07 2003Jun 12 2003We calculate the contribution of local gluon condensate into the quadratic theta-term of vacuum energy and discuss its application to the study of axion mass.

Neutrino masses and Z' physicsDec 14 1998The characteristic scale of neutral current, provided by an extension of Standard Model with a local group over the right-handed fermions, determines the smallness of neutrino masses of Dirac kind. The experimental observation of neutrino oscillations ... More