Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A faithful analytical effective one body waveform model for
  spin-aligned, moderately eccentric, coalescing black hole binaries   We present a new effective-one-body (EOB) model for eccentric binary
coalescences. The model stems from the state-of-the-art model TEOBResumS$\_$SM
for circularized coalescing black-hole binaries, that is modified to explicitly
incorporate eccentricity effects both in the radiation reaction and in the
waveform. Using Regge-Wheeler-Zerilli type calculations of the gravitational
wave losses as benchmarks, we find that a rather accurate ($\sim 1\%$)
expression for the radiation reaction along mildly eccentric orbits ($e \sim
0.3$) is given by dressing the current, EOB-resummed, circularized angular
momentum flux, with a leading-order (Newtonian-like) prefactor valid along
general orbits. An analogous approach is implemented for the waveform
multipoles. The model is then completed by the usual merger-ringdown part
informed by circularized numerical relativity (NR) simulations. The model is
validated against the 22, publicly available, NR simulations calculated by the
Simulating eXtreme Spacetime (SXS) collaboration, with mild eccentricities,
mass ratios between 1 and 3 and up to rather large dimensionless spin values
($\pm 0.7$). The maximum maximum EOB/NR unfaithfulness, calculated with
Advanced LIGO noise, is at most of order $3\%$. The analytical framework
presented here should be seen as a promising starting point for developing
highly-faithful waveform templates driven by eccentric dynamics for present,
and possibly future, gravitational wave detectors.

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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: physics
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The categories of this paper are: chem-ph
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The categories of this paper are: supr-con
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The categories of this paper are: plasm-ph
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th