A5059708667- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Cosmology and Gravitation Theories
- Particle physics theoretical and experimental studies
- Pulsars and Gravitational Waves Research
- Gas Dynamics and Kinetic Theory
- Nuclear reactor physics and engineering
- Fluid Dynamics and Turbulent Flows
- Pharmaceutical Economics and Policy
- Housing, Finance, and Neoliberalism
- Theoretical and Computational Physics
- Biomedical Ethics and Regulation
- Stochastic processes and statistical mechanics
- Quantum, superfluid, helium dynamics
- Black Holes and Theoretical Physics
- Biotechnology and Related Fields
- Computational Fluid Dynamics and Aerodynamics
- Health and Medical Research Impacts
- COVID-19 Pandemic Impacts
- Statistical Mechanics and Entropy
- Global Public Health Policies and Epidemiology
- Advanced Thermodynamics and Statistical Mechanics
- Solar and Space Plasma Dynamics
- Superconducting Materials and Applications
- Innovations in Medical Education
National Institute of Science Education and Research
2013-2025
Homi Bhabha National Institute
2022-2024
University of Chicago
2024
Yale University
2024
Physical Sciences (United States)
2023
Boston Medical Center
2021
Goethe University Frankfurt
2015-2016
Central China Normal University
2015
Variable Energy Cyclotron Centre
2010-2013
Washington University in St. Louis
2010
In the initial stage of relativistic heavy-ion collisions, strong magnetic fields appear due to large velocity colliding charges. The evolution these appears as a novel and intriguing feature in fluid-dynamical description collisions. this work, we study analytically one-dimensional, longitudinally boost-invariant motion an ideal fluid presence transverse field. Interestingly, find that, limit magnetohydrodynamics, i.e., for infinite conductivity, irrespective strength magnetization, decay...
Relativistic hydrodynamics has been quite successful in explaining the collective behaviour of QCD matter produced high energy heavy-ion collisions at RHIC and LHC. We briefly review latest developments hydrodynamical modeling relativistic collisions. Essential ingredients model such as hydrodynamic evolution equations, dissipation, initial conditions, equation state, freeze-out process are reviewed. discuss observable quantities particle spectra anisotropic flow effect viscosity on these...
We study the one-dimensional, longitudinally boost-invariant motion of an ideal fluid with infinite conductivity in presence a transverse magnetic field, i.e., magnetohydrodynamical limit. In extension our previous work Roy et al., [Phys. Lett. B 750, 45 (2015)], we consider to have non-zero magnetization. First, assume constant susceptibility $\chi_{m}$ and ultrarelativistic gas equation state. For paramagnetic (i.e., $\chi_{m}>0$), decay energy density slows down since gains from field....
We investigate the effect of large magnetic fields on ($2+1$)-dimensional reduced-magnetohydrodynamical expansion hot and dense nuclear matter produced in $\sqrt{{s}_{\mathrm{NN}}}=200$ GeV Au+Au collisions. For sake simplicity, we consider case where field points direction perpendicular to reaction plane. also this be external, with energy density parametrized as a two-dimensional Gaussian. The width Gaussian along directions orthogonal beam axis varies centrality collision. dependence...
An intense transient magnetic field is produced in high energy heavy-ion collisions mostly due to the spectator protons inside two colliding nuclei. The introduces anisotropy medium, and hence isotropic scalar transport coefficients become anisotropic split into multiple components. Here, we calculate coefficients' shear, bulk viscosity, electrical conductivity, thermal diffusion for a multicomponent hadron resonance gas (HRG) model nonzero by using Boltzmann equation relaxation time...
We estimate the event-by-event (e-by-e) distribution of ratio $(\ensuremath{\sigma})$ magnetic and electric field energy density to fluid in transverse plane Au-Au collisions at $\sqrt{{s}_{NN}}=200$ GeV. A Monte Carlo (MC) Glauber model is used calculate $\ensuremath{\sigma}$ for impact parameter $b=0$, 12 fm time ${\ensuremath{\tau}}_{i}\ensuremath{\sim}0.5$ fm. The obtained by using Gaussian smoothing with two different ${\ensuremath{\sigma}}_{g}=0.25$, 0.5 For...
Fluctuations in the initial transverse energy-density distribution lead to anisotropic flows as observed central high-energy heavy-ion collisions. Studies of longitudinal fluctuations can shed further light on conditions and dynamical evolution hot quark-gluon matter these Correlations between with varying pseudorapidity gaps Pb+Pb collisions at CERN Large Hadron Collider are investigated using both an event-by-event (3+1)-D ideal hydrodynamical model fluctuating a multiphase transport...
We have calculated the temperature dependence of shear $\ensuremath{\eta}$ and bulk $\ensuremath{\zeta}$ viscosities quark matter due to quark-meson fluctuations. The thermal width originating from quantum fluctuations quark-$\ensuremath{\pi}$ quark-$\ensuremath{\sigma}$ loops at finite is with formalism real-time field theory. Temperature-dependent constituent-quark meson masses couplings are obtained in Nambu--Jona-Lasinio model. found a nontrivial influence temperature-dependent on...
The Boltzmann equation is solved in the relaxation time approximation using a hierarchy of angular moments distribution function. Our solution obtained for an azimuthally symmetric radially expanding boost-invariant conformal system that undergoing Gubser flow. we get after truncating infinite set equations at various orders compared to exact kinetic solution. dynamics transition described by presence fixed points which describes evolution from early collisionless free streaming hydrodynamic...
A bstract We derive the relativistic non-resistive, viscous second-order magnetohydrodynamic equations for dissipative quantities using relaxation time approximation. The Boltzmann equation is solved a system of particles and antiparticles Chapman-Enskog like gradient expansion single-particle distribution function truncated at second order. In first order, transport coefficients are independent magnetic field. second-order, new that couple field appear which different from those obtained in...
CoVID-19 is spreading throughout the world at an alarming rate. So far it has spread over 200 countries in whole world. Mathematical modelling of epidemic like always useful for strategic decision making, especially very to gain some understanding future densely populous India. We use a simple yet effective mathematical model SIR(D) predict India by using existing data. also estimate effect lock-down/social isolation via time-dependent coefficient model. The study with realistic parameters...
A bstract We investigate the causality and stability of relativistic viscous non-resistive magneto-hydrodynamics in framework Israel-Stewart (IS) second-order theory, also within a modified IS theory which incorporates effect magnetic fields relaxation equations stress. compute dispersion relation by perturbing fluid variables around their equilibrium values. In ideal magnetohydrodynamics limit, linear yields well-known propagating modes: Alfvén magneto-sonic modes. presence bulk pressure,...
In this article, there are 18 sections discussing various current topics in the field of relativistic heavy-ion collisions and related phenomena, which will serve as a snapshot state art. Section 1 reviews experimental results some recent light-flavored particle production data from ALICE collaboration. Other mostly theoretical nature. Very strong but transient magnetic created could have important observational consequences. This has generated lot activity last decade. Sections 2, 7, 9, 10...
Here we derive the relativistic resistive dissipative second-order magnetohydrodynamic evolution equations using Boltzmann equation, thus extending our work from previous paper [A. K. Panda et al., J. High Energy Phys. 03 (2021) 216] where considered nonresistive limit. We solve equation for a system of particles and antiparticles relaxation time approximation Chapman-Enskog--like gradient expansion off-equilibrium distribution function, truncating beyond second order. In first order, bulk...
The discovery of hot and dense quantum chromodynamics (QCD) matter, known as Quark–Gluon Plasma (QGP), is an essential milestone in understanding the finite temperature QCD medium. Experimentalists around world collect unprecedented amount data heavy ion collisions, at Relativistic Heavy Ion Collider (RHIC), Brookhaven National Laboratory (BNL) New York, USA, Large Hadron (LHC), CERN Geneva, Switzerland. experimentalists analyze these to unravel mystery this new phase matter that filled a...
Simulated results from a (2+1)-D relativistic viscous hydrodynamic model have been compared to the experimental data on centrality dependence of invariant yield, elliptic flow (${v}_{2}$), and hexadecapole (${v}_{4}$) as function transverse momentum (${p}_{T}$) charged hadrons in Au-Au collisions at $\sqrt{{s}_{NN}}=200$ GeV. Results two types initial energy density profile, one based Glauber other color glass condensate (CGC) model, are presented. We observe no difference simulated yield...
We derive a first-order, stable and causal, relativistic hydrodynamic theory from the microscopic kinetic equation using gradient expansion technique in general frame. The frame is introduced arbitrary matching conditions for fields. interaction Boltzmann through momentum-dependent relaxation time approximation (MDRTA) with proposed collision operator that preserves conservation laws. demonstrate here first not only choice but also momentum dependence of rate, captured MDRTA, imperative...
At Large Hadron Collider energy, the expected large multiplicities suggests presence of collective behavior even in pp collisions. A hydrodynamical approach has been applied to estimate elliptic flow measured by azimuthal asymmetry parameter $v_2$, collisions at $\surd$s = 14 TeV. $v_2$ $\pi^-$ is found be strongly dependent on parton density profile inside a proton [e.g., surface diffuseness ($\xi$)]. For $\xi$ 0.105, positive while 0.25, close zero and approaches negative values $p_t$. The...
We investigate the impact of baryon stopping on temporal evolution electromagnetic fields in vacuum at low-energy Au+Au collisions with $\sqrt{{s}_{NN}}=4--20\phantom{\rule{0.16em}{0ex}}\mathrm{GeV}$. Baryon is incorporated into Monte Carlo Glauber model by employing a parametrized velocity profile participant nucleons nonzero deceleration. The presence these decelerating participants leads to noticeable changes centrality and $\sqrt{{s}_{NN}}$ dependence compared scenarios vanishing...