We simulate the space-time dynamics of high-energy collisions based on a microscopic kinetic description in the conformal relaxation time approximation, in order to determine the range of applicability of an effective description in relativistic viscous hydrodynamics. We find that hydrodynamics provides a quantitatively accurate description of collective flow when the average inverse Reynolds number is sufficiently small and the early preequilibrium stage is properly accounted for. We further discuss the implications of our findings for the (in)applicability of hydrodynamics in proton-proton, proton-nucleus, and light nucleus collisions.
{ "_oai": { "updated": "2023-04-15T00:30:12Z", "id": "oai:repo.scoap3.org:77030", "sets": [ "PRL" ] }, "authors": [ { "raw_name": "Victor E. Ambru\u015f", "affiliations": [ { "country": "Romania", "value": "Department of Physics, West University of Timi\u015foara, Bulevardul Vasile P\u00e2rvan 4, Timi\u015foara 300223, Romania" } ], "surname": "Ambru\u015f", "given_names": "Victor E.", "full_name": "Ambru\u015f, Victor E." }, { "raw_name": "S. Schlichting", "affiliations": [ { "country": "Germany", "value": "Fakult\u00e4t f\u00fcr Physik, Universit\u00e4t Bielefeld, D-33615 Bielefeld, Germany" } ], "surname": "Schlichting", "given_names": "S.", "full_name": "Schlichting, S." }, { "raw_name": "C. Werthmann", "affiliations": [ { "country": "Germany", "value": "Fakult\u00e4t f\u00fcr Physik, Universit\u00e4t Bielefeld, D-33615 Bielefeld, Germany" }, { "country": "Poland", "value": "Incubator of Scientific Excellence-Centre for Simulations of Superdense Fluids, University of Wroc\u0142aw, pl. Maxa Borna 9, 50-204 Wroc\u0142aw, Poland" } ], "surname": "Werthmann", "given_names": "C.", "full_name": "Werthmann, C." } ], "titles": [ { "source": "APS", "title": "Establishing the Range of Applicability of Hydrodynamics in High-Energy Collisions" } ], "dois": [ { "value": "10.1103/PhysRevLett.130.152301" } ], "publication_info": [ { "journal_volume": "130", "journal_title": "Physical Review Letters", "material": "article", "journal_issue": "15", "year": 2023 } ], "$schema": "http://repo.scoap3.org/schemas/hep.json", "acquisition_source": { "date": "2023-04-15T00:30:06.952423", "source": "APS", "method": "APS", "submission_number": "a7e8911cdb2411eda920065bd8dc6b20" }, "page_nr": [ 7 ], "license": [ { "url": "https://creativecommons.org/licenses/by/4.0/", "license": "CC-BY-4.0" } ], "copyright": [ { "statement": "Published by the American Physical Society", "year": "2023" } ], "control_number": "77030", "record_creation_date": "2023-04-14T14:30:06.931087", "_files": [ { "checksum": "md5:16caac25163f10013889a7655fa8247f", "filetype": "pdf", "bucket": "9d5aed19-c25a-4a14-95a9-ba259094fe8f", "version_id": "4c5928b5-d092-4993-9b3d-d3cdc7c54ff2", "key": "10.1103/PhysRevLett.130.152301.pdf", "size": 2062013 }, { "checksum": "md5:e5ec691c34b2ae1e80929e1552a8e747", "filetype": "xml", "bucket": "9d5aed19-c25a-4a14-95a9-ba259094fe8f", "version_id": "63f1a3b5-47e0-453c-990c-5a7b1bd9eb78", "key": "10.1103/PhysRevLett.130.152301.xml", "size": 111683 } ], "collections": [ { "primary": "HEP" }, { "primary": "Citeable" }, { "primary": "Published" } ], "arxiv_eprints": [ { "categories": [ "hep-ph", "nucl-th" ], "value": "2211.14356" } ], "abstracts": [ { "source": "APS", "value": "We simulate the space-time dynamics of high-energy collisions based on a microscopic kinetic description in the conformal relaxation time approximation, in order to determine the range of applicability of an effective description in relativistic viscous hydrodynamics. We find that hydrodynamics provides a quantitatively accurate description of collective flow when the average inverse Reynolds number <math><mrow><msup><mrow><mi>Re</mi></mrow><mrow><mo>\u2212</mo><mn>1</mn></mrow></msup></mrow></math> is sufficiently small and the early preequilibrium stage is properly accounted for. We further discuss the implications of our findings for the (in)applicability of hydrodynamics in proton-proton, proton-nucleus, and light nucleus collisions." } ], "imprints": [ { "date": "2023-04-14", "publisher": "APS" } ] }