3 papers
gr-qc2026
Exploring Particle Geodesics in a Warp Drive Spacetime
Lucas Timotheo Sanches, Max Morris, Steven Robert Brandt
Although the Alcubierre Warp Drive is theoretically capable of providing faster-than-light travel, it may be difficult to use for this purpose. But is it useful for slower-than-lig…
gr-qc2026
Accelerating Numerical Relativity Simulations with New Multistep Fourth-Order Runge-Kutta Methods
Lucas Timotheo Sanches, Steven Robert Brandt, Jay Kalinani +2
Many HPC applications that solve differential equations rely on the Runge-Kutta family of methods for time integration. Among these methods, the fourth-order accurate RK4 scheme is…
astro-ph.HE2025
AsterX: a new open-source GPU-accelerated GRMHD code for dynamical spacetimes
Jay V. Kalinani, Liwei Ji, Lorenzo Ennoggi +10
We present AsterX, a novel open-source, modular, GPU-accelerated, fully general relativistic magnetohydrodynamic (GRMHD) code designed for dynamic spacetimes in 3D Cartesian coordi…