A5046335930- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Theoretical and Computational Physics
- Cosmology and Gravitation Theories
- Nonlinear Dynamics and Pattern Formation
- Black Holes and Theoretical Physics
- Complex Systems and Time Series Analysis
- stochastic dynamics and bifurcation
- Advanced Thermodynamics and Statistical Mechanics
- Statistical Mechanics and Entropy
- Pulsars and Gravitational Waves Research
- Ecosystem dynamics and resilience
- High-Velocity Impact and Material Behavior
- Cold Atom Physics and Bose-Einstein Condensates
- Combustion and flame dynamics
- High-pressure geophysics and materials
- Energetic Materials and Combustion
- Laser-Plasma Interactions and Diagnostics
- Complex Systems and Dynamics
- Particle Dynamics in Fluid Flows
- Microstructure and mechanical properties
- Quantum, superfluid, helium dynamics
- Quantum many-body systems
- Advanced Algebra and Logic
North Carolina State University
2018-2025
RIKEN BNL Research Center
2015-2024
Brookhaven National Laboratory
2015-2024
Istituto Nazionale di Fisica Nucleare, Sezione di Pisa
2024
University of Pisa
2024
RIKEN Center for Computational Science
2024
University of Parma
2024
Istituto Nazionale di Fisica Nucleare, Gruppo Collegato di Parma
2024
Bielefeld University
2024
University of Utah
2024
Magnetic fields created in the noncentral heavy-ion collision are studied within a microscopic transport model, namely Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). Simulations were carried out for different impact parameters SPS energy range ($E_{lab} = 10 - 158 A$ GeV) and highest energies accessible RHIC. We show that magnetic field emerging collisions has magnitude of order $eB_y \sim 10^{-1} m_π^2$ RHIC energies. The estimated value strength LHC amounts to 15 m_π^2$.
We show that fluctuating proton positions in the colliding nuclei generate, on event-by-event basis, very strong magnetic and electric fields direction both parallel perpendicular to reaction plane. The magnitude of E B each event is order m_pi^2 \approx 10^18 Gauss. Implications observation dipole heavy ion collisions discussed, possibility measuring conductivity hot medium pointed out.
We introduce a novel photon production mechanism stemming from the conformal anomaly of $\mathrm{QCD}\ifmmode\times\else\texttimes\fi{}\mathrm{QED}$ and existence strong (electro)magnetic fields in heavy ion collisions. Using hydrodynamical description bulk modes QCD plasma, we show that this leads to yield is comparable conventional sources. This also provides significant positive contribution azimuthal anisotropy photons, ${v}_{2}$, as well radial ``flow.'' compare our results data PHENIX...
We discuss the modification of cumulants net baryon and proton distributions due to global conservation number in heavy-ion collisions. Corresponding probability their are derived analytically. show that results a substantial decrease higher order cumulants. Based on our studies, we propose an observable is insensitive modifications conservation.
We consider the thermodynamics of chiral models in mean-field approximation and discuss relevance (frequently omitted) fermion vacuum loop. Within quark-meson model its Polyakov loop extended version, we show that fluctuations can change order phase transition limit strongly influence physical observables. compute temperature-dependent effective potential baryon-number susceptibilities these models, with without term, explore cutoff pion mass dependence susceptibilities. Finally,...
The thermodynamics and phase structure of the Polyakov loop-extended two-flavor chiral quark-meson (PQM) model are explored beyond mean-field approximation. analysis PQM is based on functional renormalization group (FRG) method. We formulate solve flow equation for scale-dependent thermodynamic potential in presence gluonic background field at finite temperature density. determine diagram FRG approach discuss its modification compared to focus fluctuations net-quark number density, including...
Thermodynamics of the Polyakov-loop-extended two-flavor chiral quark-meson model (PQM) is explored. The analysis PQM based on functional renormalization group method. An appropriate truncation effective action with quarks coupled to background gluonic fields introduced. Within this scheme, we derive flow equation for scale-dependent thermodynamic potential at finite temperature and density in presence a symmetry breaking external field. influence fluctuations gluon field properties net-quark...
We consider the effect of volume fluctuations on cumulants net baryon number. Based a general formalism, we derive universal expressions for number in presence with an arbitrary probability distribution. The relevance these baryon-number and particular ratios is assessed Polyakov loop extended quark-meson model within functional renormalization group. show that are generally enhanced by critical behavior higher-order may be modified significantly.
In this review, we examine the current theoretical and experimental status of chiral magnetic effect. We discuss possible future strategies for resolving uncertainties in interpretation including recommendations work, measurements based on data collected past five years, beam use coming years RHIC. specifically investigate case colliding nuclear isobars (nuclei with same mass but different charge) find compelling. recommend that a program isobar collisions to isolate effect from background...
We determine the distribution of linearly polarized gluons a dense target at small x by solving Balitsky-Jalilian-Marian-Iancu-McLerran-Weigert-Leonidov-Kovner rapidity evolution equations. From these solutions, we estimate amplitude ∼cos2ϕ azimuthal asymmetries in deep inelastic scattering dijet production high energies. find sizable long-range with magnitude range v_{2}=⟨cos2ϕ⟩∼10%.
We consider a nonperturbative approach to the thermal production of dileptons and photons at temperatures near critical temperature in QCD. The suppression colored excitations low is modeled by including small value Polyakov loop, ``semi''-quark-gluon plasma (QGP). Comparing semi-QGP perturbative QGP, we find mild enhancement dileptons. In contrast, leading logarithmic order weak coupling there are far fewer hard from than usual QGP. To illustrate possible effects on photon dilepton...
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...
This paper introduces a transverse-momentum dependent (TMD) factorization scheme designed to unify both large and small Bjorken-x regimes. We compute the next-to-leading order quantum chromodynamics (QCD) corrections gluon TMD operator for an unpolarized hadron within this proposed scheme. leads emergence of new evolution, incorporating those in transverse momentum, rapidity, Bjorken-x. When matched collinear scheme, our faithfully reproduces well-established...
The phase structure of the Polyakov loop-extended chiral quark-meson model is explored in a nonperturbative approach, beyond mean-field approximation, presence magnetic field. We show that by including meson fluctuations one cannot resolve qualitative discrepancy on dependence crossover transition temperature nonzero field between effective predictions and recent lattice results [1]. compute curvature line $T\ensuremath{-}{\ensuremath{\mu}}_{B}$ plane at increases with increasing On basis...
We show how angular asymmetries $\sim\cos 2\phi$ can arise in dipole scattering at high energies. illustrate the effects due to anisotropic fluctuations of saturation momentum target with a finite correlation length transverse impact parameter plane, i.e.\ from domain-like structure. compute two-particle azimuthal cumulant this model including both one-particle factorizable as well genuine non-factorizable contributions cross section. also full BBGKY hierarchy for four-particle and find that...
The production of a hard dijet with small transverse momentum imbalance in semi-inclusive DIS probes the conventional and linearly polarized Weizsaecker-Williams (WW) Transverse Momentum Dependent (TMD) gluon distributions. latter, particular, gives rise to an azimuthal dependence cross-section. In this paper we analyze feasibility measurement these TMDs through on nucleus at Electron-Ion Collider. We introduce MCDijet Monte-Carlo generator sample quark-antiquark configurations based...
A bstract We introduce the notion of Color Glass Condensate (CGC) density matrix $$ \widehat{\rho} <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mover><mml:mi>ρ</mml:mi><mml:mo>^</mml:mo></mml:mover></mml:math> . This generalizes concept probability for distribution color charges in hadronic wave function and is consistent with understanding CGC as an effective theory after integration part degrees freedom. derive evolution equations show that JIMWLK equation arises here...
Recent lattice QCD calculations strongly indicate that the chiral crossover of at zero baryon chemical potential \mu_B is a remnant second-order phase transition. Universal properties this transition can be mapped to temperature T and using non-universal parameters determined by recently. Motivated these results, first, we discuss analytic structure partition function in regime - so-called Yang-Lee edge singularity solely based on universal properties. Next, utilizing results for map real...
We present simulations of stochastic fluid dynamics in the vicinity a critical endpoint belonging to universality class Ising model.This study is motivated by challenge modeling fluctuations near conjectured phase diagram Quantum Chromodynamics (QCD).We focus on interaction shear modes with conserved scalar density, which known as model H.We show that observed dynamical scaling behavior depends correlation length and viscosity fluid.As increased or decreased we observe cross-over from...
The McLerran-Venugopalan model describes a highly boosted hadron/nucleus as sheet of random color charges which source soft classical Weizs\"acker-Williams gluon fields. We show that due to fluctuations, individual configurations are azimuthally anisotropic. present initial evidence impact parameter dependent small-$x$ Jalilian-Marian, Iancu, McLerran, Weigert, Leonidov and Kovner (JIMWLK) resummation preserves such anisotropies over several units rapidity. Finally, we compute the first four...
Recent measurements of the azimuthal anisotropy direct photons in heavy-ion collisions at energies Relativistic Heavy Ion Collider show that it is same order as hadronic one. This finding appears to contradict expected dominance photon production from a quark-gluon plasma an early stage collision. A possible explanation strong photons, given recently, based on presence large magnetic field phase In this Letter, we propose method experimentally measure degree which responsible for observed...