scholarly journals Directed flow of charm quarks as a witness of the initial strong magnetic field in ultra-relativistic heavy ion collisions

2017 ◽  
Vol 768 ◽  
pp. 260-264 ◽  
Author(s):  
Santosh K. Das ◽  
S. Plumari ◽  
S. Chatterjee ◽  
J. Alam ◽  
F. Scardina ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Strong Magnetic Field ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Directed Flow ◽  
Charm Quarks ◽  
Ion Collisions

scholarly journals Directed flow and freeze-out in relativistic heavy-ion collisions at NICA and FAIR energies

2019 ◽  
Author(s):  
Larissa Bravina ◽  
Y. Kvasiuk ◽  
D. Sachenko ◽  
S Y. Sivoklokov ◽  
O. Vitiuk ◽  
...  
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Directed Flow ◽  
Ion Collisions ◽  
Freeze Out

scholarly journals A Systematic Study of Magnetic Field in Relativistic Heavy-Ion Collisions in the RHIC and LHC Energy Regions

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Yang Zhong ◽  
Chun-Bin Yang ◽  
Xu Cai ◽  
Sheng-Qin Feng
Keyword(s):  
Magnetic Field ◽  
Magnetic Fields ◽  
Heavy Ion Collisions ◽  
Field Model ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Collision Time ◽  
Ion Collisions ◽  
200 Gev ◽  
Magnetic Field Model

The features of magnetic field in relativistic heavy-ion collisions are systematically studied by using a modified magnetic field model in this paper. The features of magnetic field distributions in the central point are studied in the RHIC and LHC energy regions. We also predict the feature of magnetic fields at LHCsNN=900, 2760, and 7000 GeV based on the detailed study at RHICsNN=62.4, 130, and 200 GeV. The dependencies of the features of magnetic fields on the collision energies, centralities, and collision time are systematically investigated, respectively.

scholarly journals ENHANCEMENT OF FLOW ANISOTROPIES DUE TO MAGNETIC FIELD IN RELATIVISTIC HEAVY-ION COLLISIONS

2011 ◽  
Vol 26 (33) ◽  
pp. 2477-2486 ◽  
Author(s):  
RANJITA K. MOHAPATRA ◽  
P. S. SAUMIA ◽  
AJIT M. SRIVASTAVA
Keyword(s):  
Magnetic Field ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Flow Coefficient ◽  
Relativistic Heavy Ion Collisions ◽  
Early Stages ◽  
Ion Collisions ◽  
Background Magnetic Field ◽  
Different Types ◽  
The Magnetic Field

It is known that the presence of background magnetic field in cosmic plasma distorts the acoustic peaks in CMBR. This primarily results from different types of waves in the plasma with velocities depending on the angle between the magnetic field and the wave vector. We consider the consequences of these effects in relativistic heavy-ion collisions where very strong magnetic fields arise during early stages of the plasma evolution. We show that flow coefficients can be significantly affected by these effects when the magnetic field remains strong during early stages due to strong induced fields in the conducting plasma. In particular, the presence of magnetic field can lead to enhancement in the elliptic flow coefficient v2.

scholarly journals Effects of magnetic field on plasma evolution in relativistic heavy-ion collisions

2017 ◽  
Vol 96 (3) ◽  
Author(s):  
Arpan Das ◽  
Shreyansh S. Dave ◽  
P. S. Saumia ◽  
Ajit M. Srivastava
Keyword(s):  
Magnetic Field ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions

scholarly journals Particle Production in Strong Electromagnetic Fields in Relativistic Heavy-Ion Collisions

2013 ◽  
Vol 2013 ◽  
pp. 1-34 ◽  
Author(s):  
Kirill Tuchin
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Electromagnetic Fields ◽  
Heavy Ion Collisions ◽  
Particle Production ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Strong Electromagnetic Field ◽  
Kinetic Coefficients

I review the origin and properties of electromagnetic fields produced in heavy-ion collisions. The field strength immediately after a collision is proportional to the collision energy and reaches ~mπ2at RHIC and ~10mπ2at LHC. I demonstrate by explicit analytical calculation that after dropping by about one-two orders of magnitude during the first fm/c of plasma expansion, it freezes out and lasts for as long as quark-gluon plasma lives as a consequence of finite electrical conductivity of the plasma. Magnetic field breaks spherical symmetry in the direction perpendicular to the reaction plane, and therefore all kinetic coefficients are anisotropic. I examine viscosity of QGP and show that magnetic field induces azimuthal anisotropy on plasma flow even in spherically symmetric geometry. Very strong electromagnetic field has an important impact on particle production. I discuss the problem of energy loss and polarization of fast fermions due to synchrotron radiation, consider photon decay induced by magnetic field, elucidateJ/ψdissociation via Lorentz ionization mechanism, and examine electromagnetic radiation by plasma. I conclude thatallprocesses in QGP are affected by strong electromagnetic field and call for experimental investigation.

scholarly journals Nonequilibrium Dynamics of the Chiral Quark Condensate under a Strong Magnetic Field

Symmetry ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 551
Author(s):  
Gastão Krein ◽  
Carlisson Miller
Keyword(s):  
Magnetic Field ◽  
Time Evolution ◽  
Strong Magnetic Field ◽  
Early Universe ◽  
Langevin Equation ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Quark Condensate ◽  
Damping Coefficient ◽  
Ion Collisions

Strong magnetic fields impact quantum-chromodynamics (QCD) properties in several situations; examples include the early universe, magnetars, and heavy-ion collisions. These examples share a common trait—time evolution. A prominent QCD property impacted by a strong magnetic field is the quark condensate, an approximate order parameter of the QCD transition between a high-temperature quark-gluon phase and a low-temperature hadronic phase. We use the linear sigma model with quarks to address the quark condensate time evolution under a strong magnetic field. We use the closed time path formalism of nonequilibrium quantum field theory to integrate out the quarks and obtain a mean-field Langevin equation for the condensate. The Langevin equation features dissipation and noise kernels controlled by a damping coefficient. We compute the damping coefficient for magnetic field and temperature values achieved in peripheral relativistic heavy-ion collisions and solve the Langevin equation for a temperature quench scenario. The magnetic field changes the dissipation and noise pattern by increasing the damping coefficient compared to the zero-field case. An increased damping coefficient increases fluctuations and time scales controlling condensate’s short-time evolution, a feature that can impact hadron formation at the QCD transition. The formalism developed here can be extended to include other order parameters, hydrodynamic modes, and system’s expansion to address magnetic field effects in complex settings as heavy-ion collisions, the early universe, and magnetars.

scholarly journals Evolution of electro-magnetic field in relativistic heavy ion collisions from the HSD transport approach

2012 ◽  
Author(s):  
Volodymyr Konchakovski ◽  
Vadim Voronyk ◽  
Viacheslav Toneev ◽  
Wolfgang Cassing ◽  
Elena Bratkovskaya ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Ion Collisions ◽  
Electro Magnetic Field ◽  
Electro Magnetic ◽  
Transport Approach
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