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38 papers · 2 filters
Quenches and lattice simulators for particle creation
Francesco Caravelli, Fotini Markopoulou, Arnau Riera +1
In this paper we propose a framework for simulating thermal particle production in condensed matter systems. The procedure we describe can be realized by means of a quantum quench…
Horizon thermodynamics and composite metrics
Lorenzo Sindoni
We examine the conditions under which the thermodynamic behaviour of gravity can be explained within an emergent gravity scenario, where the metric is defined as a composite operat…
The Bondi-Sachs metric at the vertex of a null cone: axially symmetric vacuum solutions
Thomas Mädler, Ewald Müller
In the Bondi-Sachs formulation of General Relativity space-time is foliated via a family of null cones. If these null cones are defined such that their vertices are traced by a reg…
Geometric asymptotics for spin foam lattice gauge gravity on arbitrary triangulations
Frank Hellmann, Wojciech Kaminski
We study the behavior of holonomy spin foam partition functions, a form of lattice gauge gravity, on generic 4d-triangulations using micro local analysis. To do so we adapt tools f…
Stable isoperimetric surfaces in super-extreme Reissner-Nordström
Andrés E. Aceña, Sergio Dain
We study isoperimetric surfaces in the Reissner-Nordström spacetime, with emphasis on the cuasilocal inequality between area and charge. We analyze the stability of the isoperimetr…
Systematic biases in parameter estimation of binary black-hole mergers
Tyson B. Littenberg, John G. Baker, Alessandra Buonanno +1
Parameter estimation of binary-black-hole merger events in gravitational-wave data relies on matched-filtering techniques, which, in turn, depend on accurate model waveforms. Here…