dorsal/arxiv
View SchemaA Co-moving Coordinate System for Relativistic Hydrodynamics
| Authors | Scott Pratt |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/0612010 |
| URL | https://arxiv.org/abs/nucl-th/0612010 |
| DOI | 10.1103/PhysRevC.75.024907 |
| Journal | Phys.Rev.C75:024907,2007 |
Abstract
The equations of relativistic hydrodynamics are transformed so that steps forward in time preserves local simultaneity. In these variables, the space-time coordinates of neighboring points on the mesh are simultaneous according to co-moving observers. Aside from the time step varying as a function of the location on the mesh, the local velocity gradient and the local density then evolve according to non-relativistic equations of motion. Analytic solutions are found for two one-dimensional cases with constant speed of sound. One solution has a Gaussian density profile when mapped into the new coordinates. That solution is analyzed for the effects of longitudinal acceleration in relativistic heavy ion collisions at RHIC, especially in regards to two-particle correlation measurements of the longitudinal size.
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"abstract": "The equations of relativistic hydrodynamics are transformed so that steps\nforward in time preserves local simultaneity. In these variables, the\nspace-time coordinates of neighboring points on the mesh are simultaneous\naccording to co-moving observers. Aside from the time step varying as a\nfunction of the location on the mesh, the local velocity gradient and the local\ndensity then evolve according to non-relativistic equations of motion. Analytic\nsolutions are found for two one-dimensional cases with constant speed of sound.\nOne solution has a Gaussian density profile when mapped into the new\ncoordinates. That solution is analyzed for the effects of longitudinal\nacceleration in relativistic heavy ion collisions at RHIC, especially in\nregards to two-particle correlation measurements of the longitudinal size.",
"arxiv_id": "nucl-th/0612010",
"authors": [
"Scott Pratt"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.75.024907",
"journal_ref": "Phys.Rev.C75:024907,2007",
"title": "A Co-moving Coordinate System for Relativistic Hydrodynamics",
"url": "https://arxiv.org/abs/nucl-th/0612010"
},
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