A5055571744- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- Cold Atom Physics and Bose-Einstein Condensates
- Pulsars and Gravitational Waves Research
- Cosmology and Gravitation Theories
- Atomic and Subatomic Physics Research
- High-pressure geophysics and materials
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Theoretical and Computational Physics
- Stochastic processes and statistical mechanics
- Black Holes and Theoretical Physics
- Atomic and Molecular Physics
- Advanced NMR Techniques and Applications
- Particle Detector Development and Performance
- Advanced Thermodynamics and Statistical Mechanics
- Quantum chaos and dynamical systems
- Particle Accelerators and Free-Electron Lasers
- Computational Physics and Python Applications
- Dark Matter and Cosmic Phenomena
- Nuclear reactor physics and engineering
- Gamma-ray bursts and supernovae
Mitchell Institute
2005-2025
Texas A&M University
2016-2025
Brookhaven National Laboratory
2010-2014
Center for Theoretical Physics
2011
University of Wisconsin–Madison
2011
The University of Tokyo
2006
Tokyo University of Science
2006
Novo Nordisk (Denmark)
2003-2004
Stony Brook University
1997-2003
State University of New York
1997-2003
Instantons lead to strong correlations between up and down quarks with spin zero anti-symmetric color wave functions. In cold dense matter, $n_b>n_c\simeq 1 fm^{-3}$ $T$ condensate restoring chiral symmetry. At high density, the ground state is a superconductor in which diquarks play role of Cooper pairs. An interesting toy model provided by QCD two colors: it has particle-anti-particle symmetry relates $$ $< qq>$ condensates.
Thermalization and collective flow of charm (c) bottom (b) quarks in ultrarelativistic heavy-ion collisions are evaluated based on elastic parton rescattering an expanding quark-gluon plasma (QGP). We show that resonant interactions a strongly interacting QGP (sQGP), as well coalescence, can play essential role the interpretation recent data from BNL Relativistic Heavy-Ion Collider (RHIC), thus illuminate nature sQGP its hadronization. Our main assumption, motivated by findings lattice...
Employing nonperturbative transport coefficients for heavy-flavor (HF) diffusion through quark-gluon plasma (QGP), hadronization and hadronic matter, we compute $D$- $B$-meson observables in Pb+Pb ($\sqrt{s}$=2.76\,TeV) collisions at the LHC. Elastic heavy-quark scattering QGP is evaluated within a thermodynamic $T$-matrix approach, generating resonances close to critical temperature which are utilized recombination into $D$ $B$ mesons, followed by using effective amplitudes. The implemented...
We study the thermal emission of photons from hot and dense strongly interacting hadronic matter at temperatures close to expected phase transition quark-gluon plasma (QGP). Earlier calculations photon radiation ensembles mesons are reexamined with additional constraints, including new production channels as well an assessment form factor effects. Whereas strangeness-induced yields turn out be moderate, hitherto not considered $t$-channel exchange $\ensuremath{\omega}$ is found contribute...
We investigate effects of charm-quark interactions in a Quark-Gluon Plasma on the production $D$ and $J/\psi$ mesons high-energy heavy-ion collisions. Employing previously constructed coalescence model that successfully reproduces transverse momentum ($p_T$) spectra elliptic flow ($v_2(p_T)$) light hadrons at RHIC from underlying light-quark distributions phase transition temperature $T_c$, $D$-meson $p_T$ are evaluated. For distributions, we consider two limiting scenarios: (i) {\em no}...
We evaluate heavy-quark (HQ) transport properties in a quark-gluon plasma (QGP) within Brueckner many-body scheme employing interaction potentials extracted from thermal lattice QCD. The in-medium T matrices for elastic charm- and bottom-quark scattering off light quarks the QGP are dominated by attractive meson diquark channels which support resonance states up to temperatures of ~1.5T(c). resulting drag coefficient increases with decreasing temperature, contrary expectations based on...
Charm- and bottom-quark rescattering in a quark-gluon plasma (QGP) is investigated with the objective of assessing approach toward thermalization. Employing Fokker-Planck equation to approximate collision integral Boltzmann we augment earlier studies based on perturbative parton cross sections by introducing resonant heavy-light quark interactions. The latter are motivated recent QCD lattice calculations that indicate presence ``hadronic'' states QGP. We model these colorless (pseudo-)...
We present a hydrodynamic assessment of preliminary particle spectra observed in $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{\mathrm{NN}}}=200\mathrm{GeV}.$ The hadronic part the underlying equation state is based on explicit conservation (measured) ratios throughout resonance gas stage after chemical freezeout by employing potentials for stable mesons, nucleons, and antinucleons. find that under these conditions data (in particular, proton spectra) favor low temperature around...
We calculate diffusion and hadronization of heavy quarks in high-energy heavy-ion collisions, implementing the notion a strongly coupled quark-gluon plasma both micro- macroscopic components. The process is simulated using relativistic Fokker-Planck dynamics for elastic scattering hydrodynamic background. heavy-quark transport coefficients medium are obtained from nonperturbative $T$-matrix interactions which build up resonant correlations close to transition temperature. latter also form...
The modifications of ${D}_{s}$-meson spectra in ultrarelativistic heavy-ion collisions are identified as a quantitative probe key properties the hot nuclear medium. unique valence-quark content ${D}_{s}=c\overline{s}$ couples well-known strangeness enhancement with collective-flow pattern primordially produced charm quarks. This idea is illustrated utilizing consistent strong-coupling treatment hydrodynamic bulk evolution and nonperturbative $T$-matrix interactions for both heavy-quark...
Charmonium production in heavy-ion collisions is investigated within a kinetic theory framework incorporating in-medium properties of open- and hidden-charm states line with recent QCD lattice calculations. A continuously decreasing open-charm threshold across the phase boundary hadronic quark-gluon matter found to have important implications for equilibrium abundance charmonium states. The survival $J/\ensuremath{\psi}$ resonance above transition temperature enables their recreation also...
We set up a framework in which in-medium charmonium properties are constrained by thermal lattice quantum chromodynamics and subsequently implemented into rate equation enabling the comparison with experimental data heavy-ion collisions. Specifically, we evaluate phenomenological consequences for production originating from two different scenarios either free or internal energy identified two-body potential between charm anticharm quarks. These represent $J/\ensuremath{\psi}$ ``melting...
We update our calculations of thermal-photon production in nuclear collisions at the Relativistic Heavy-Ion Collider (RHIC). Specifically, we address recent experimental observation an elliptic flow direct photons comparable magnitude to that pions, which is variance with expectations based on quark-gluon plasma (QGP) dominated photon radiation. Our thermal emission rate previous work, i.e., resummed leading-order QGP and in-medium hadronic rates confined phase. These are nearly degenerate...