A5058822719- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Quantum, superfluid, helium dynamics
- Astro and Planetary Science
- Planetary Science and Exploration
- Cold Atom Physics and Bose-Einstein Condensates
- Pulsars and Gravitational Waves Research
- Relativity and Gravitational Theory
- Statistical Mechanics and Entropy
- Optical properties and cooling technologies in crystalline materials
- Atomic and Subatomic Physics Research
- Gamma-ray bursts and supernovae
- Scientific Research and Discoveries
- Physics of Superconductivity and Magnetism
- High-pressure geophysics and materials
University of Jyväskylä
2019-2022
Helsinki Institute of Physics
2019-2022
University of Helsinki
2019-2022
Brookhaven National Laboratory
2016-2019
Stony Brook University
2016-2019
American Physical Society
2018
We demonstrate that the striking systematics of two-particle azimuthal Fourier harmonics v_{2} and v_{3} in ultrarelativistic collisions protons, deuterons, helium-3 ions off gold nuclei measured by PHENIX Collaboration at Relativistic Heavy Ion Collider (RHIC) is reproduced color glass condensate effective field theory. This contradicts claim C. Aidala et al. (PHENIX Collaboration), arXiv:1805.02973, their data rule out initial state-based explanations. The underlying effect, as discussed...
We perform the first, to our knowledge, classical-statistical real time lattice simulations of topological transitions in nonequilibrium glasma weakly coupled but highly occupied gauge fields created immediately after collision ultrarelativistic nuclei. Simplifying description by employing SU(2) fields, and neglecting their longitudinal expansion, we find that rate is initially strongly enhanced relative thermal sphaleron transition decays with during thermalization process. Qualitative...
Qualitative features of multiparticle correlations in light-heavy ion (p+A) collisions at RHIC and LHC are reproduced a simple initial state model partons the projectile coherently scattering off localized domains color charge heavy nuclear target. These include (i) ordering magnitudes azimuthal angle nth Fourier harmonics two-particle v_{n}{2}, (ii) energy transverse momentum dependence four-particle harmonic v_{2}{4}, (iii) symmetric cumulants measuring between different harmonics. Similar...
We present a real-time lattice approach to study the nonequilibrium dynamics of vector and axial charges in $SU(N)\ifmmode\times\else\texttimes\fi{}U(1)$ gauge theories. Based on classical description non-Abelian Abelian fields, we include dynamical fermions develop operator definitions for (improved) Wilson overlap that allow us manifestations anomaly from first principles. application this anomalous transport phenomena such as chiral magnetic effect (CME) separation (CSE) by studying...
In arXiv:1705.00745, an initial state "parton model" of quarks scattering off a dense nuclear target was shown to qualitatively reproduce the systematics multiparticle azimuthal anisotropy cumulants measured in proton/deuteron-nucleus ($pA$) collisions at RHIC and LHC. The included i) behavior four-particle cumulant $c_2\{4\}$, which generates real second Fourier harmonic $v_2\{4\}$, ii) ordering $v_2\{2\}>v_2\{4\}\approx v_2\{6\}\approx v_2\{8\}$ for two-, four-, six-, eight-particle...
Simple power counting arguments in the dilute-dense framework of Color Glass Condensate (CGC) Effective Field Theory predict that even and odd azimuthal anisotropy harmonics two-particle correlations proton-nucleus collisions at LHC will respectively satisfy v^2_{2n} ~ N_{ch}^0 v^2_{2n+1} N_{ch}, where N_{ch} denotes number charged particles. We show these expectations are borne out qualitatively, quantitatively, within systematic uncertainties, for v_2 v_4 comparisons with data from ATLAS...
We present a first principles study of chiral plasma instabilities and the onset turbulence in QED plasmas with strong gauge matter interaction (e^{2}N_{f}=64), far from equilibrium. By performing classical-statistical lattice simulations microscopic theory, we show that generation helical magnetic fields helicity imbalance fermion sector proceeds via three distinct phases. During initial linear instability regime causes an exponential growth (damping) field modes right- (left-) handed...
Abstract At the earliest times after a heavy-ion collision, magnetic field created by spectator nucleons will generate an extremely strong, albeit rapidly decreasing in time, field. The impact of this may have detectable consequences, and is believed to drive anomalous transport effects like Chiral Magnetic Effect (CME). We detail exploratory study on dynamical hydrodynamic medium collisions two ultrarelativistic heavy-ions, using framework numerical ideal MagnetoHydroDynamics (MHD) with...
We investigate strongly correlated non-Abelian plasmas out of equilibrium. Based on numerical simulations, we establish a self-similar scaling property for the time evolution spatial Wilson loops that characterizes universal state matter far from Most remarkably, it exhibits generalized area law which holds sufficiently large ratio and fractional power time. Performing calculations also perturbative regime at higher momenta, are able to characterize full nonthermal properties SU(2) SU(3)...
We develop a method to obtain fermion spectral functions non-perturbatively in non-Abelian gauge theory with high occupation numbers of fields. After recovering the free field case, we extract function fermions highly occupied plasma close its non-thermal fixed point, i.e., self-similar regime non-equilibrium dynamics. find good agreement hard loop perturbation for medium-induced masses, dispersion relations and quasiparticle residues. also full momentum dependence damping rate collective...
The large density of gluons, which is present shortly after a nuclear collision at very high energies, can lead to the formation condensate. We identify gauge-invariant order parameter for condensation based on elementary nonperturbative excitations plasma, are described by spatial Wilson loops. Using real-time lattice simulations, we demonstrate that self-similar transport process towards low momenta builds up macroscopic zero mode. Our findings reveal intriguing similarities recent...
We present a first principles approach to study the Chiral Magnetic Effect during pre-equilibrium stage of heavy-ion collision. discuss dynamics and Wave based on real-time lattice simulations with dynamical (Wilson Overlap) fermions simultaneously coupled color electromagnetic fields. While for light quarks we observe dissipation-less transport charges as in anomalous hydrodynamics, demonstrate that heavier effects explicit chiral symmetry breaking lead significant reduction associated currents.
The study of multiparticle correlations and collectivity in the hot dense matter created collisions heavy-ions as well those smaller systems such proton--heavy-ion has progressed to point where detailed knowledge three-dimensional structure proton is needed confront experimental data. We discuss results from a simple proof-of-principle initial state parton model which reproduces many features data on that are often ascribed hydrodynamic flow. outline how this can be further improved with...
It was argued in arXiv:1805.09342 and arXiv:1807.00825 that the systematics of azimuthal anisotropy coefficients $v_{2,3}$ measured ultrarelativistic light-heavy ion collisions at RHIC LHC can be described an initial state dilute-dense Color Glass Condensate (CGC) framework. We elaborate here on discussion these papers provide further novel results strengthen their conclusions. The underlying mathematical framework numerical techniques employed are very similar to those CGC based IP-Glasma...
The study of multiparticle correlations and collectivity in the hot dense matter created collisions heavy-ions as well those smaller systems such proton--heavy-ion has progressed to point where detailed knowledge three-dimensional structure proton is needed confront experimental data. We discuss results from a simple proof-of-principle initial state parton model which reproduces many features data on that are often ascribed hydrodynamic flow. outline how this can be further improved with...
We report on recent progress in understanding multiparticle correlations small systems from the initial state. First, we consider a proof-of-principle parton model, which use to demonstrate that many of observed light-heavy ion collisions, often ascribed hydrodynamic collectivity, can be qualitatively reproduced an state model. Then, study two-particle harmonics v2 and v3 for p/d/3He+Au collisions at RHIC using dilute-dense Color Glass Condensate Effective Field Theory framework. show this...