57 citations · 238 across the 20 of their papers we have counts for
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Eccentricity reduction of binary neutron star initial data with the entropy based flux limiting scheme
Georgios Doulis, Sebastiano Bernuzzi, Wolfgang Tichy
The construction of high-resolution shock-capturing schemes is vital in producing highly accurate gravitational waveforms from neutron star binaries. The entropy based flux limitin…
Entropy based flux limiting scheme for conservation laws
Georgios Doulis, Sebastiano Bernuzzi, Wolfgang Tichy
The entropy based flux-limiting (EFL) scheme is a novel approach designed to accurately resolve shocks and discontinuities in special and general relativistic hydrodynamics. By ada…
Analytically improved and numerical-relativity informed effective-one-body model for coalescing binary neutron stars
Rossella Gamba, Matteo Breschi, Sebastiano Bernuzzi +9
Gravitational wave astronomy pipelines rely on template waveform models for searches and parameter estimation purposes. For coalescing binary neutron stars (BNS), such models need…
Second release of the CoRe database of binary neutron star merger waveforms
Alejandra Gonzalez, Francesco Zappa, Matteo Breschi +15
We present the second data release of gravitational waveforms from binary neutron star merger simulations performed by the Computational Relativity (CoRe) collaboration. The curren…
Entropy-limited higher-order central scheme for neutron star merger simulations
Georgios Doulis, Florian Atteneder, Sebastiano Bernuzzi +1
Numerical relativity simulations are the only way to calculate exact gravitational waveforms from binary neutron star mergers and to design templates for gravitational-wave astrono…
Construction of high precision numerical single and binary black hole initial data
Georgios Doulis
We present a novel implicit numerical implementation of the parabolic-hyperbolic formulation of the constraints of general relativity. The proposed method is unconditionally stable…
Global simulations of Minkowski space-time including space-like infinity
Georgios Doulis, Jörg Frauendiener
In this work, we study linearised gravitational fields on the entire Minkowski space-time including space-like infinity. The generalised conformal field equations linearised about…
Numerical Brill-Lindquist initial data with a Schwarzschildean end at spatial infinity
Georgios Doulis, Oliver Rinne
We construct numerically time-symmetric initial data that are Schwarzschildean at spatial infinity and Brill-Lindquist in the interior. The transition between these two data sets t…
Numerical construction of initial data for Einstein's equations with static extension to space-like infinity
Georgios Doulis, Oliver Rinne
We describe a numerical method to construct Cauchy data extending to space-like infinity based on Corvino's (2000) gluing method. Adopting the setting of Giulini and Holzegel (2005…
Canonical Quantization of the BTZ Black Hole using Noether Symmetries
T. Christodoulakis, N. Dimakis, Petros A. Terzis +1
The well-known BTZ black hole solution of (2+1) Einstein's gravity, in the presence of a cosmological constant, is treated both at the classical and quantum level. Classically, the…
The Spin-2 Equation on Minkowski Background
Florian Beyer, Georgios Doulis, Jörg Frauendiener +1
The linearised general conformal field equations in their first and second order form are used to study the behaviour of the spin-2 zero-rest-mass equation on Minkowski background…
Linearized gravitational waves near space-like and null infinity
Florian Beyer, Georgios Doulis, Jörg Frauendiener +1
Linear perturbations on Minkowski space are used to probe numerically the remote region of an asymptotically flat space-time close to spatial infinity. The study is undertaken with…
The second order spin-2 system in flat space near space-like and null-infinity
Georgios Doulis, Joerg Frauendiener
In previous work, the numerical solution of the linearized gravitational field equations near space-like and null-infinity was discussed in the form of the spin-2 zero-rest-mass eq…
Conditional Symmetries and the Canonical Quantization of Constrained Minisuperspace Actions: the Schwarzschild case
T. Christodoulakis, N. Dimakis, Petros A. Terzis +4
A conditional symmetry is defined, in the phase-space of a quadratic in velocities constrained action, as a simultaneous conformal symmetry of the supermetric and the superpotentia…
Numerical space-times near space-like and null infinity. The spin-2 system on Minkowski space
Florian Beyer, Georgios Doulis, Jörg Frauendiener +1
In this paper we demonstrate for the first time that it is possible to solve numerically the Cauchy problem for the linearisation of the general conformal field equations near spac…
Towards Canonical Quantum Gravity for Geometries Admitting Maximally Symmetric Two-dimensional Surfaces
T. Christodoulakis, G. Doulis, Petros A. Terzis +4
The 3+1 (canonical) decomposition of all geometries admitting two-dimensional space-like surfaces is exhibited. A proposal consisting of a specific re-normalization {\bf Assumption…
Towards Canonical Quantum Gravity for G1 Geometries in 2+1 Dimensions with a Lambda--Term
T. Christodoulakis, G. Doulis, Petros A Terzis +4
The canonical analysis and subsequent quantization of the (2+1)-dimensional action of pure gravity plus a cosmological constant term is considered, under the assumption of the exis…