Tensor representation of quadrupole expansion for softened potentials in N-body simulations

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorMarinho, Eraldo Pereira-
Data de aceite: dc.date.accessioned2025-08-21T22:32:15Z-
Data de disponibilização: dc.date.available2025-08-21T22:32:15Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2022-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1063/5.0163323-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/308704-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/308704-
Descrição: dc.descriptionA tensor representation for quadrupole expansion is proposed as a recipe for n-body simulations of collisionless stellar systems that do not perform the direct summation method, as is the case of TREECODE. The quadrupole expansion is almost straightforward in the non-softened case, but it is pretty complicated when some softening artifice modifies the potential. A shorthand formula of quadrupole correction for potential and gravity force is derived that can be easily adapted to computer codes like C and FORTRAN. A test is performed to show how relevant it is to incorporate quadrupole correction in n-body codes like TREECODE and particle-mesh methods.-
Descrição: dc.descriptionPaulista State University - UNESP Department of Statistics Applied Mathematics and Computing, Avenida 24A, 1515, DEMAC, SP-
Descrição: dc.descriptionPaulista State University - UNESP Department of Statistics Applied Mathematics and Computing, Avenida 24A, 1515, DEMAC, SP-
Idioma: dc.languageen-
Relação: dc.relationAIP Conference Proceedings-
???dc.source???: dc.sourceScopus-
Título: dc.titleTensor representation of quadrupole expansion for softened potentials in N-body simulations-
Tipo de arquivo: dc.typeaula digital-
Aparece nas coleções:Repositório Institucional - Unesp

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