Periodic standing-wave approximation: nonlinear scalar fields, adapted corrdinates, and the eigenspectral method

Update Item Information
Publication Type Journal Article
School or College College of Science
Department Physics
Creator Bromley, Benjamin C.
Other Author Owen, Robert; Price, Richard H.
Title Periodic standing-wave approximation: nonlinear scalar fields, adapted corrdinates, and the eigenspectral method
Date 2005
Description The periodic standing wave (PSW) method for the binary inspiral of black holes and neutron stars computes exact numerical solutions for periodic standing-wave spacetimes and then extracts approximate solutions of the physical problem, with outgoing waves. The method requires solution of a boundary-value problem with a mixed (hyperbolic and elliptic) character. We present here a new numerical method for such problems, based on three innovations: (i) a coordinate system adapted to the geometry of the problem, (ii) an expansion in multipole moments of these coordinates and a filtering out of higher moments, and (iii) the replacement of the continuum multipole moments with their analogs for a discrete grid. We illustrate the efficiency and accuracy of this method with nonlinear scalar model problems. Finally, we take advantage of the ability of this method to handle highly nonlinear models to demonstrate that the outgoing approximations extracted from the standing-wave solutions are highly accurate even in the presence of strong nonlinearities.
Type Text
Publisher American Physical Society
Volume 71
Subject Periodic standing wave method; Black holes; Neutron stars
Subject LCSH Black holes (Astronomy); Neutron stars
Language eng
Bibliographic Citation Bromley, B. C., Owen, R., & Price, R. H. (2005). Periodic standing-wave approximation: nonlinear scalar fields, adapted corrdinates, and the eigenspectral method. Physical Review D, 71, 104017
Rights Management (c) American Physical Society
Format Medium application/pdf
Format Extent 756,075 Bytes
Identifier ir-main,4978
ARK ark:/87278/s62r498j
Setname ir_uspace
ID 706878
Reference URL https://collections.lib.utah.edu/ark:/87278/s62r498j
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