Results for "V. D. Toneev"

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Observable Consequences of Crossover-type Deconfinement Phase TransitionOct 13 2002Equation of State (EoS) for hot and dense nuclear matter with a quark-hadron phase transition is constructed within a statistical mixed-phase model assuming coexistence of unbound quarks in nuclear surrounding. This model predicts the deconfinement phase ... More
Chiral Magnetic Effect and evolution of electromagnetic fieldSep 23 2011Nov 28 2011The energy dependence of observable two particle correlator in search for the local strong parity violation in Au+Au collisions is estimated within a simple phenomenological model. The model reproduces available RHIC data but at LHC predicts that the ... More
The Chiral Magnetic Effect: Beam-energy and system-size dependenceDec 07 2010We consider the energy dependence of the local ${\cal P}$ and ${\cal CP}$ violation in Au+Au and Cu+Cu collisions over a large energy range within a simple phenomenological model. It is expected that at LHC the chiral magnetic effect will be about 20 ... More
Beam-energy and system-size dependence of the CMEDec 05 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 (CME) will be about ... More
Dilepton production from hydrodynamically expanding fireballJan 19 2006A hybrid model is put forward for describing relativistic heavy ion collisions. The early interaction stage responsible for entropy creation is calculated within the transport Quark-Gluon String Model resulting in an initial state. The passage to subsequent ... More
Semi-central In-In collisions and Brown-Rho scalingSep 28 2005Mar 09 2006In connection with the claim made at the Quark Matter 2005 Conference that the Brown-Rho scaling is ruled out by NA60 data we consider dimuon production from semi-central In+In collisions in a full dynamical model. It is shown that if only a modification ... More
Anomalous radial expansion in central heavy-ion reactionsJul 12 2000Sep 19 2000The expansion velocity profile in central heavy-ion reactions in the Fermi energy domain is examined. The radial expansion is non-hubblean and in the surface region it scales proportional to a higher exponent ($\alpha > 1$) of the radius. The anomalous ... More
Hadron rapidity spectra within a hybrid modelJun 03 2016Jun 07 2016A 2-stage hybrid model is proposed that joins the fast initial state of interaction, described by the hadron string dynamics (HSD) model, to subsequent evolution of the expanding system at the second stage, treated within ideal hydrodynamics. The developed ... More
Canonical Strangeness and Distillation Effects in Hadron ProductionNov 30 2004Mar 17 2005Strangeness canonical ensemble for Maxwell-Boltzmann statistics is reconsidered for excited nuclear systems with non-vanishing net strangeness. A new recurrence relation method is applied to find the partition function. The method is first generalized ... More
The quark condensate in relativistic nucleus-nucleus collisionsNov 28 1997Aug 27 1998We compute the modification of the quark condensate $<\bar{q} q>$ in relativistic nucleus-nucleus collisions and estimate the 4-volume, where the quark condensate is small ($<\bar{q}q>/<\bar{q} q>_0\leq$ 0.1--0.3) using hadron phase-space distributions ... More
Quark-gluon evolution in early stage of ultra-relativistic heavy-ion collisionsOct 07 2002A set of coupled kinetic equations describing in the Abelian approximation a mixture of quarks and self-interacting gluons is formulated and solved numerically. The model includes the Schwinger-like mechanism for particle creation in a strong field as ... More
Charge-dependent directed flow in asymmetric nuclear collisionsOct 06 2014Nov 19 2014The directed flow of identified hadrons is studied within the parton-hadron-string-dynamics (PHSD) approach for the asymmetric system Cu+Au in non-central collisions at $\sqrt{s_{NN}}$ = 200 GeV. It is emphasized that due to the difference in the number ... More
Strange matter and kaon to pion ratio in SU(3) PNJL modelAug 13 2018Aug 15 2018The behavior of strange matter in the frame of the SU(3)Polyakov-loop extended Nambu-Jona-Lasinio model including $U_A(1)$ anomaly is considered. We discuss the appearance of a peak in the ratio of the number of strange mesons to non-strange mesons known ... More
p-Pb collisions at 5.02 TeV in the Parton-Hadron-String-Dynamics transport approachJan 17 2014Sep 09 2014The Parton-Hadron-String-Dynamics (PHSD) transport model is employed for p-Pb collisions at $\sqrt{s_{NN}}=$ 5.02 TeV and compared to recent experimental data from the LHC as well as to alternative models. We focus on the question of initial state dynamics, ... More
Directed flow in asymmetric nucleus-nucleus collisions and the inverse Landau-Pomeranchuk-Migdal effectOct 20 2016It is proposed to identify a strong electric field - created during relativistic collisions of asymmetric nuclei - via the observation of pseudorapidity and transverse momentum distributions of hadrons with the same mass but opposite charge. The results ... More
Thermodynamics in NJL-like modelsFeb 09 2011Mar 11 2011Thermodynamic behavior of conventional Nambu-Jona-Lasinio and Polyakov-loop-extended Nambu-Jona-Lasinio models is compared. A particular attention is paid to the phase diagram in the ($T -\mu$) plane.
Equation of state of deconfined matter within dynamical quasiparticle descriptionOct 08 2004Dec 13 2004A simple quasiparticle model, motivated by lowest-order perturbative QCD, is proposed. It is applied to interpret the lattice QCD equation of state. A reasonable reproduction of the lattice data is obtained. In contrast to existing quasiparticle models, ... More
Quark scattering off quarks and hadronsApr 26 2013Dec 13 2013The in-medium elastic scattering $qq\to qq, q\bar{q}\to q\bar{q}$ and $\bar{q}\bar{q}\to \bar{q}\bar{q}$ is calculated within the two-flavor Polyakov-loop-extended Nambu-Jona-Lasinio model. The integral and differential quark-quark scattering, its energy ... More
Relativistic Mean-Field Model with Scaled Hadron Masses and CouplingsFeb 27 2008Oct 07 2008Here we continue to elaborate properties of the relativistic mean-field based model (SHMC) proposed in ref. [6] where hadron masses and coupling constants depend on the $\sigma$-meson field. The validity of approximations used in [6] is discussed. We ... More
Remarks concerning bulk viscosity of hadron matter in relaxation time ansatzApr 26 2012Sep 26 2013The bulk viscosity is calculated for hadron matter produced in heavy-ion collisions, being described in the relaxation time approximation withi n the relativistic mean- field-based model with scaled hadron masses and couplings. W e show how different ... More
Viscosity coefficients for hadron and quark-gluon phasesMar 18 2010Oct 18 2010The shear ($\eta$) and bulk ($\zeta$) viscosities are calculated in a quasiparticle relaxation time approximation. The hadron phase is described within the relativistic mean field based model with scaled hadron masses and couplings. The quark phase is ... More
Shear and bulk viscosities for pure glue matterNov 03 2010Apr 05 2011Shear $\eta$ and bulk $\zeta$ viscosities are calculated in a quasiparticle model within a relaxation time approximation for pure gluon matter. Below $T_c$ the confined sector is described within a quasiparticle glueball model. Particular attention is ... 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
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
Relaxation time ansatz and shear and bulk viscosities of gluon matterJun 23 2011Sep 21 2011Shear and bulk viscosity-to-entropy density ratios are calculated for the pure gluon matter in a non-equilibrium mean-field quasiparticle approach within the relaxation time approximation. We study how different approximations used in the literature affect ... More
Decay of a scalar $σ$-meson near the critical end-point in the PNJL modelApr 14 2011Properties of a scalar $\sigma$-meson are investigated in the two-flavor Nambu-Jona-Lasinio model with the Polyakov loop. Model analysis of the phase diagram of strong interacting matter is performed. The temperature dependence of the $\sigma\rightarrow\pi\pi$ ... More
Impact of the vector interaction on the phase structure of QCD matterDec 22 2014The 2-flavor Polyakov-loop extended model is generalized by taking into account the effective four-quark vector-type interaction with the coupling strengths, which are endowed with a dependence on the Polyakov field $\Phi$. The effective vertex generates ... More
Vorticity and hyperon polarization at NICA energiesJan 22 2018We study the formation of fluid vorticity and the hyperon polarization in heavy-ion collisions at NICA energies in the framework of the Parton-Hadron-String Dynamic Model, taking into account both hadronic and quark-gluonic (partonic) degrees of freedom. ... More
Relativistic Heavy-Ion Collisions within 3-Fluid Hydrodynamics: Hadronic ScenarioMar 31 2005Mar 15 2006A 3-fluid hydrodynamic model for simulating relativistic heavy-ion collisions is introduced. Alongside with two baryon-rich fluids, the new model considers time-delayed evolution of a third, baryon-free (i.e. with zero net baryonic charge) fluid of newly ... More
Impact of the initial size of spatial fluctuations on the collective flow in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeVNov 20 2014Mar 21 2015The Parton-Hadron-String-Dynamics (PHSD) transport model is used to study the influence of the initial size of spatial fluctuations of the interacting system on flow observables in Pb-Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV for different centralities. ... More
Quantum Statistical Model of Nuclear Multifragmentation in the Canonical Ensemble MethodDec 15 1999A quantum statistical model of nuclear multifragmentation is proposed. The recurrence equation method used within the canonical ensemble makes the model solvable and transparent to physical assumptions and allows to get results without involving the Monte ... More
Estimates of hyperon polarization in heavy-ion collisions at collision energies $\sqrt{s_{NN}}=$ 4--40 GeVMar 13 2019Global polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons in Au+Au collisions at collision energies $\sqrt{s_{NN}}=$ 4-40 GeV in the midrapidity region and total polarization, i.e. averaged over all rapidities, are studied within the scope of the ... More
QCD Matter: A Search for a Mixed Quark-Hadron PhaseAug 11 2006Nov 15 2006Physics aspects of a JINR project to reach the planned 5A GeV energy for the Au and U beams and to increase the bombarding energy up to 10A GeV are discussed. The project aims to search for a possible formation of a strongly interacting mixed quark-hadron ... More
Fragile Signs of Criticality in the Nuclear MultifragmentationJun 08 2001Deviations from an idealized equilibrium phase transition picture in nuclear multifragmentation is studied in terms of the entropic index. We investigate different heat-capacity features in the canonical quantum statistical model of nuclear multifragmentation ... More
Towards a New Strategy of Searching for QCD Phase Transition in Heavy Ion CollisionsDec 12 1995We reconsider the Hung and Shuryak arguments in favour of searching for the deconfinement phase transition in heavy ion collisions {\em downward} from the nominal SPS energy, at $E_{lab} \approx 30 \ GeV/A$ where the fireball lifetime is the longest one. ... More
A Mixed Phase Model and the 'Softest Point' EffectFeb 06 1998Particularities of the statistical mixed phase model for describing the deconfinement phase transition and physics constraints on the model parameters, are discussed. The modifications proposed concern an improved treatment of hadron-hadron interactions ... More
Estimates of hyperon polarization in heavy-ion collisions at collision energies $\sqrt{s_{NN}}=$ 4--40 GeVMar 13 2019Mar 18 2019Global polarization of $\Lambda$ and $\bar{\Lambda}$ hyperons in Au+Au collisions at collision energies $\sqrt{s_{NN}}=$ 4-40 GeV in the midrapidity region and total polarization, i.e. averaged over all rapidities, are studied within the scope of the ... More
Equation of State for Hot and Dense Matter: $σ$-$ω$-$ρ$ Model with Scaled Hadron Masses and CouplingsDec 13 2006Mar 27 2007The proposed earlier relativistic mean-field model with hadron masses and coupling constants depending on the $\sigma$-meson field is generalized to finite temperatures. Within this approach we simulate the in-medium behavior of the hadron masses motivated ... More
Viscosity of hadron matter within relativistic mean-field based model with scaled hadron masses and couplingsDec 11 2009Dec 18 2009The shear ($\eta$) and bulk ($\zeta$) viscosities are calculated in a quasiparticle relaxation time approximation for a hadron matter described within the relativistic mean-field based model with scaled hadron masses and couplings. Comparison with results ... More
Multifragmentation of non-spherical nucleiJan 29 1999Sep 20 1999The shape influence of decaying thermalized source on various characteristics of multifragmentation as well as its interplay with effects of angular momentum and collective expansion are first studied and the most pertinent variables are proposed. The ... More
Constraints on shear stress tensor in viscous relativistic hydrodynamicsOct 24 2018We extend our hybrid model HydHSD by taking into account shear viscosity within the Israel-Stewart hydrodynamics. The influence of different forms of $\pi^{\mu\nu}$ constraints on observables is analyzed. We show that the form of the corresponding condition ... More
Multifragmentation of non-spherical nuclei : Analysis of central Xe + Sn collisions at 50 MeV/nuclFeb 22 1999The influence of shape of expanding and rotating source on various characteristics of the multifragmentation process is studied. The analysis is based on the extension of the statistical microcanonical multifragmentation model. The comparison with the ... More
Effects of Model Parameters in Thermodynamics of the PNJL ModelNov 13 2011The thermodynamic behavior of the two-flavor($N_f=$2) three-color ($N_c=3$) Polyakov-loop-extended Nambu-Jona-Lasinio model at the finite chemical potential is investigated. New lattice gluon data for gluon thermodynamics are used defining the effective ... More
Towards thermodynamical consistency of qusiparticle pictureFeb 12 2001Apr 10 2002The purpose of the present article is to call attention to some realistic quasiparticle-based description of the quark/gluon matter and its consistent implementation in thermodynamics. A simple and transparent representation of the thermodynamical consistency ... More
The non-equilibrium distribution function of particles and anti-particles created in strong fieldsNov 10 1999Dec 15 1999We investigate the quantum Vlasov equation with a source term describing the spontaneous particle creation in strong fields. The back-reaction problem is treated by solving this kinetic equation together with the Maxwell equation which determines the ... More
A quantum kinetic equation for particle production in the Schwinger mechanismSep 02 1998A quantum kinetic equation is derived for the description of pair production in a time-dependent homogeneous electric field $E(t)$. As a source term, the Schwinger mechanism for particle creation is incorporated. Possible particle production due to collisions ... More
Rise of azimuthal anisotropies as a signature of the Quark-Gluon-Plasma in relativistic heavy-ion collisionsSep 14 2011Jan 11 2012The azimuthal anisotropies of the collective transverse flow of hadrons are investigated in a large range of heavy-ion collision energy within the Parton-Hadron-String Dynamics (PHSD) microscopic transport approach which incorporates explicit partonic ... More
Event-by-event background in estimates of the chiral magnetic effectAug 13 2012Dec 17 2012In terms of the parton-hadron-string-dynamics (PHSD) approach - including the retarded electromagnetic field - we investigate the role of fluctuations of the correlation function in the azimuthal angle $\psi$ of charged hadrons that is expected to be ... More
Towards exotic nuclei via binary reaction mechanismNov 19 1997Assuming a binary reaction mechanism, the yield of isotopes near the heaviest $N=Z$ neutron-deficit nucleus $^{100}$Sn is studied with a microscopic transport model. The large influence of nuclear shell structure and isotope composition of the colliding ... More
Dynamical derivation of a quantum kinetic equation for particle production in the Schwinger mechanismDec 15 1997A quantum kinetic equation has been derived for the description of pair production in a time-dependent homogeneous electric field $E(t)$. As a source term, the Schwinger mechanism for particle creation is incorporated. Possible particle production due ... More
Non-Markovian effects in strong-field pair creationOct 22 1998We analyze a quantum kinetic equation describing both boson and fermion pair production and explore analytically and numerically the solution of the non-Markovian kinetic equation. In the Markovian limit of the kinetic equation we find an analytical solution ... More
Electromagnetic field evolution in relativistic heavy-ion collisionsMar 22 2011May 11 2011The hadron string dynamics (HSD) model is generalized to include the creation and evolution of retarded electromagnetic fields as well as the influence of the magnetic and electric fields on the quasiparticle propagation. The time-space structure of the ... More
Theoretical analysis of a possible observation of the chiral magnetic effect in Au + Au collisions within the RHIC beam energy scan programDec 12 2011Mar 26 2012In terms of the hadron-string-dynamics (HSD) approach we investigate the correlation function in the azimuthal angle $\psi$ of charged hadrons that is expected to be sensitive to a signal of local strong parity violation. Our analysis of Au+Au collisions ... More
Relativistic quantum kinetic equation of the Vlasov type for systems with internal degrees of freedomSep 25 1997We present an approach to derive a relativistic kinetic equation of the Vlasov type. Our approach is especially reliable for the description of quantum field systems with many internal degrees of freedom. The method is based on the Heisenberg picture ... More
Inertial mechanism: dynamical mass as a source of particle creationOct 01 2007Dec 10 2007A kinetic theory of vacuum particle creation under the action of an inertial mechanism is constructed within a nonpertrubative dynamical approach. At the semi-phenomenological level, the inertial mechanism corresponds to quantum field theory with a time-dependent ... More
Lattice QCD Constraints on the Nuclear Equation of StateMay 25 2006Sep 19 2006Based on the quasi-particle description of the QCD medium at finite temperature and density we formulate the phenomenological model for the equation of state that exhibits crossover or the first order deconfinement phase transition. The models are constructed ... More
The QGP phase in relativistic heavy-ion collisionsFeb 22 2012The dynamics of partons, hadrons and strings in relativistic nucleus-nucleus collisions is analyzed within the novel Parton-Hadron-String Dynamics (PHSD) transport approach, which is based on a dynamical quasiparticle model for partons (DQPM) matched ... More
Collective properties of nucleus-nucleus collisions from AGS to LHC energiesJul 13 2012Jul 18 2012The azimuthal anisotropies of the collective transverse flow of charged hadrons are investigated in a wide range of heavy-ion collision energies within the microscopic Parton-Hadron-String Dynamics (PHSD) transport approach which incorporates explicit ... More
Azimuthal anisotropies for Au+Au collisions in the parton-hadron transient energy rangeJan 16 2012May 02 2012The azimuthal anisotropies of the collective transverse flow of charged hadrons are investigated in a wide range of heavy-ion collision energies within the microscopic parton-hadron-string dynamics (PHSD) transport approach which incorporates explicit ... More
Parton/hadron dynamics in heavy-ion collisions at FAIR energiesAug 19 2014Recent STAR data for the directed flow of protons, antiprotons and charged pions obtained within the beam energy scan program are analyzed within the Parton-Hadron-String-Dynamics (PHSD/HSD) transport models. Both versions of the kinetic approach are ... More
Evolution of Baryon-Free Matter Produced in Relativistic Heavy-Ion CollisionsFeb 13 2003Dec 08 2003A 3-fluid hydrodynamic model is introduced for simulating heavy-ion collisions at incident energies between few and about 200 AGeV. In addition to the two baryon-rich fluids of 2-fluid models, the new model incorporates a third, baryon-free (i.e. with ... More
Decay Anisotropy of $e^+e^-$ Sources from $pN$ and $pd$ collisionsAug 27 1995A full calculation of lepton-pair angular characteristics is carried out for $e^+e^-$ pairs created in $pp$, $pn$ and $pd$ collisions at intermediate energies. It is demonstrated that the proposed new observable, the dilepton decay anisotropy, quite sensitively ... More
Three-Fluid Simulations of Relativistic Heavy-Ion CollisionsSep 03 2003Sep 05 2003A relativistic 3-fluid 3D hydrodynamic model has been developed for describing heavy-ion collisions at incident energies between few and $\sim$ 200 A$\cdot$GeV. In addition to two baryon-rich fluids which simulate mutually decelerating counterflows of ... More
Examination of the directed flow puzzle in heavy-ion collisionsApr 10 2014Jul 14 2014Recent STAR data for the directed flow of protons, antiprotons, and charged pions obtained within the beam energy scan program are analyzed within the parton-hadron-string-dynamics (PHSD and HSD) transport models and a 3-fluid hydrodynamics (3FD) approach. ... More
Search for a mixed phase of strongly interacting matter at the JINR NuclotronNov 08 2005A physical program is formulated for new facilities opening in Dubna for acceleration of heavy ions with an energy up to 5 AGeV.
Nuclear Multifragmentation in the Non-extensive Statistics - Canonical FormulationMar 11 2000We apply the canonical quantum statistical model of nuclear multifragmentation generalized in the framework of recently proposed Tsallis non-extensive thermostatistics for the description of nuclear multifragmentation process. The test calculation in ... More
Directed Flow of Baryons in Heavy-Ion CollisionsNov 01 2000The collective motion of nucleons from high-energy heavy-ion collisions is analyzed within a relativistic two-fluid model for different equations of state (EoS). As function of beam energy the theoretical slope parameter F_y of the differential directed ... More
Dynamical interpretation of chemical freeze-out in heavy ion collisionsNov 08 2000It is demonstrated that there exists a direct correlation between chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy density, $p(\epsilon)/\epsilon$, has a minimum. A dynamical model is given ... More
Transverse momentum spectra of hadrons produced in central heavy-ion collisionsFeb 22 2008In-medium effects of transverse-mass distributions of quarks and gluons are considered assuming a possible local equilibrium for colorless quark objects like mesons and baryons created in central A+A collisions. It is shown that the average square of ... More
Towards Searching for a Mixed Phase of Strongly Interacting QCD Matter at the JINR NuclotronJan 24 2006Available experimental data in respect to a possible formation of a strongly interacting mixed phase are outlined. A physical program is formulated for new facilities being opend in Dubna for acceleration of heavy ions with an energy up to 5 AGeV.
Spectra and femtoscopic scales in a hydrokinetic model for baryon-rich fireballsDec 10 2010The hydrokinetic model and the scheme of dynamical freeze out proposed earlier for the RHIC energy are extended to lower colliding energy for non-vanishing baryon chemical potential. In this case a new two-phase equation of state is applied where baryon-rich ... More
Dynamical Interpretation of Chemical Freeze-Out ParametersApr 16 1999Apr 17 1999It is shown that the condition for chemical freeze-out, average energy per hadron approximately 1 GeV, selects the softest point of the equation of state, namely the point where the pressure divided by the energy density has a minimum. The sensitivity ... More
Estimate of the magnetic field strength in heavy-ion collisionsJul 08 2009Magnetic fields created in the noncentral heavy-ion collision are studied within a microscopic transport model, namely the Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). Simulations were carried out for different impact parameters within ... More
Evidence for creation of strong electromagnetic fields in relativistic heavy-ion collisionsApr 21 2016It is proposed to identify a strong electric field created during relativistic collisions of asymmetric nuclei via observation of pseudorapidity and transverse momentum distributions of hadrons with the same mass but opposite charges. The detailed calculation ... More
Collective effects in central heavy-ion collisionsJan 30 2008Feb 13 2008In-medium effects on transverse-mass distributions of quarks and gluons are considered assuming a possible local equilibrium for colorless quark objects (mesons and baryons) created in central A-A collisions. It is shown that the average transverse momentum ... More
Strangeness Production in Nuclear Matter and Expansion DynamicsAug 07 2003Thermodynamical properties of hot and dense nuclear matter are analyzed and compared for different equation of state (EoS). It is argued that the softest point of the equation of state and the strangeness separation on the phase boundary can manifest ... More
Non-Abelian color fields from relativistic color charge configurations in the classical limitFeb 06 2013Dec 16 2013We study the dynamics of color fields as generated by simple configurations of relativistic particles with Abelian and non-Abelian (SU(2)) charges in the classical limit. We find that chromodynamic (non-Abelian) systems generally show Coulomb-like features ... More
Lattice QCD Constraints on Hybrid and Quark StarsJan 13 2005Jun 01 2005A QCD-motivated dynamical-quasiparticle model with parameters adjusted to reproduce the lattice-QCD equation of state is extrapolated from region of high temperatures and moderate baryonic densities to the domain of high baryonic densities and zero temperature. ... More
The QGP dynamics in relativistic heavy-ion collisionsApr 15 2013The dynamics of partons and hadrons in relativistic nucleus-nucleus collisions is analyzed within the novel Parton-Hadron-String Dynamics (PHSD) transport approach, which is based on a dynamical quasiparticle model for the partonic phase (DQPM) including ... More
Dynamical phase trajectories for relativistic nuclear collisionsSep 15 2006Central collisions of gold nuclei are simulated by several existing models and the central net baryon density rho and the energy density eps are extracted at successive times, for beam kinetic energies of 5-40 GeV per nucleon. The resulting trajectories ... More
Plasma production and thermalisation in a strong fieldMar 28 2001Aspects of the formation and equilibration of a quark-gluon plasma are explored using a quantum kinetic equation, which involves a non-Markovian, Abelian source term for quark and antiquark production and, for the collision term, a relaxation time approximation ... More
Statistical Multifragmentation of Non-Spherical Expanding Sources in Central Heavy-Ion CollisionsSep 22 2003Mar 02 2004We study the anisotropy effects measured with INDRA at GSI in central collisions of Xe+Sn at 50 A.MeV and Au+Au at 60, 80, 100 A.MeV incident energy. The microcanonical multifragmentation model with non-spherical sources is used to simulate an incomplete ... More
The NICA/MPD Project at JINR (Dubna)Sep 10 2007Sep 11 2007A new project of Nuclotron-based Ion Collider fAcility (NICA) and Multi-Purpose Detector (MPD) is proposed at JINR (Dubna). Status of this NICA/MPD project is outlined. Main system parameters and some construction details are given.
Transition from Thermal to Rapid Expansion in Multifragmentation of Gold Induced by Light Relativistic ProjectilesFeb 17 2001Multiple emission of intermediate-mass fragments has been studied for the collisions of p, $^4$He and $^{12}$C on Au with the $4\pi$ setup FASA. In the case of $^{12}$C(22.4 GeV)+Au and $^4$He(14.6 GeV)+Au collisions, the deviations from a pure thermal ... More
Resonance Structure in the $γγ$ Invariant Mass Spectrum in $p$C- and $d$C-InteractionsJun 17 2008Sep 28 2009Along with $\pi^0$ and $\eta$ mesons, a resonance structure in the invariant mass spectrum of two photons at $M_{\gamma\gamma}= 360 \pm 7 \pm 9$ MeV is observed in the reaction $d C\to\gamma + \gamma +X$ at momentum 2.75 GeV/c per nucleon. Estimates of ... More
Comparative Study of Multifragmentation of Gold Nuclei Induced by Relativistic Protons, $^4$He, and $^{12}$CJul 02 2002Multiple emission of intermediate-mass fragments has been studied for the collisions of p, $^4$He and $^{12}$C on Au with the $4\pi$ setup FASA. The mean IMF multiplicities (for the events with at least one IMF) are saturating at the value of $2.2\pm0.2$ ... More
Finite-wavevector Jahn-Teller-pairing and superconductivity in the cuprat esOct 13 2000A model interaction is proposed in which pairing is caused by a non-local Jahn-Teller (JT) -like instability due to the coupling between planar O states and knot equal to 0 phonons. Apart from pairing, the interaction is found to naturally allow metallic ... More
Classification of stationary compact homogeneous special pseudo Kähler manifolds of semisimple groupsNov 11 1997May 26 1999The variation of Hodge structure of a Calabi-Yau 3-fold induces a canonical K\"ahler metric on its Kuranishi moduli space, known as the Weil-Petersson metric. Similarly, special pseudo K\"ahler manifolds correspond to certain (abstract) variations of ... More
Strong-coupling branching of FQHL edgesJun 25 2004We have developed a theory of quasiparticle backscattering in a system of point contacts formed between single-mode edges of several Fractional Quantum Hall Liquids (FQHLs) with in general different filling factors $\nu_j$ and one common single-mode edge ... More
Optical properties of a two-nanospheroid cluster: analytical approachOct 27 2010Optical properties of a plasmonic nano-antenna made of two metallic nanospheroids (prolate or oblate) are investigated analytically in quasistatic approximation. It is shown that in clusters of two nanospheroids, three types of plasmonic modes can be ... More
Duality results in Banach and quasi-Banach spaces of homogeneous polynomials and applicationsMar 03 2015Jul 28 2016Spaces of homogeneous polynomials on a Banach space are frequently equipped with quasinorms instead of norms. In this paper we develop a technique to replace the original quasi-norm by a norm in a dual preserving way, in the sense that the dual of the ... More
Thermodynamics of pharmacological action for electron-accepting compounds on activated or damaged cell in the context of Ling's model of the living cellOct 27 2011Aug 20 2012The theory describing action of medicines explored in this paper is based on assumption that vital activity of the cell may be described in terms of the model of two states: resting state and excitation. According to available physiological data excitation ... More
A Note on Quantum CompactonsJan 14 2015Compactons are solutions of the equations of motion that behave trivially outside a compact region. In general, the operators describing quantum fluctuations above compactons have singularities. However, we show that despite these singularities the quantum ... More
The fluctuating α-effect and Waldmeier relations in the nonlinear dynamo modelsOct 11 2011Oct 13 2011We study the possibility to reproduce the statistical relations of the sunspot activity cycle, like the so-called Waldmeier relations, the cycle period - amplitude and the cycle rise rate - amplitude relations, by means of the mean field dynamo models ... More
Spectroscopic test of Bose-Einstein statistics for photonsJan 12 2010Feb 04 2010Using Bose-Einstein-statistics-forbidden two-photon excitation in atomic barium, we have limited the rate of statistics-violating transitions, as a fraction $\nu$ of an equivalent statistics-allowed transition rate, to $\nu<4.0\times10^{-11}$ at the 90% ... More
Finite-wavevector phonon coupling to degenerate electronic states in LaSrCuOJul 17 2000We consider finite-k electron-phonon coupling appropriate for a superconductor with a very short coherence length and local intersite pairs. From group theoretical analyis we find that phonons with nonzero k can couple to degenerate electronic states ... More
On pseudo-Riemannian manifolds with many Killing spinorsFeb 26 2009Let $M$ be a pseudo-Riemannian spin manifold of dimension $n$ and signature $s$ and denote by $N$ the rank of the real spinor bundle. We prove that $M$ is locally homogeneous if it admits more than ${3/4}N$ independent Killing spinors with the same Killing ... More
Plasmonic atoms and plasmonic moleculesMar 28 2007The proposed paradigm of plasmonic atoms and plasmonic molecules allows one to describe and predict the strongly localized plasmonic oscillations in the clusters of nanoparticles and some other nanostructures in uniform way. Strongly localized plasmonic ... More
Composite electric S-brane solutions with maximal number of branesJul 27 2004Nov 16 2004In this paper we consider (n+1)-dimensional cosmological model with scalar field and antisymmetric (p+2)-form. Using an electric composite Sp-brane ansatz the field equations for the original system reduce to the equations for a Toda-like system with ... More
Two models of protoplasm microstructure of the living cell in resting stateSep 14 2011May 27 2012In order to develop the methods of thermodynamic analysis for the living cell, two models of protoplasm microstructure of the living cell in resting state were suggested. Both models are based on the assumption that the Ling's cell as a statistical mechanics ... More