IV Hot QCD Matter Conference 2026

M-SHIVA 1.0: A Relativistic Resistive Magnetohydrodynamic Framework for Heavy-Ion Collisions and Electromagnetic Energy Transfer in QGP

Not scheduled

20m

Indian institute of Science Education and Research (IISER), Tirupati

Oral Presentation Electromagnetic probes

Speaker

Krishanu Sengupta (National Institute of Science Education and Research)

Description

Relativistic heavy-ion collisions generate strong electromagnetic fields that interact with the conducting quark-gluon plasma (QGP), motivating a description based on relativistic resistive magnetohydrodynamics (RRMHD). We present M-SHIVA 1.0, a finite-volume RRMHD framework designed for heavy-ion collision studies. The coupled 14-equation system is evolved using an HLL shock-capturing scheme with IMEX Runge-Kutta time integration to handle the stiffness associated with high electrical conductivity, while the magnetic-field divergence constraint is controlled using the GLM formulation. The code is validated through Brio-Wu, cylindrical blast, Cartesian rotor, and Milne rotor tests, covering resistive to nearly ideal-MHD regimes. For heavy-ion applications, optical-Glauber profiles are used for the initial QGP energy density, with electromagnetic fields generated by spectator protons. We study the resulting spatial, momentum anisotropy and Joule heating for RHIC- and LHC-like conditions. While finite conductivity significantly affects electromagnetic-field evolution, the irreversible Joule heating remains smaller than the cooling due to longitudinal expansion for the systems considered.