100 citations · 477 across the 27 of their papers we have counts for
28 papers
Covariant variation for point-particle Lagrangians
Finnian Gray, Sebastian Murk, Daniel R. Terno
Structureless test particles in general relativity follow geodesics. For extended bodies, higher-order multipole moments lead to departures from geodesic motion; in particular, spi…
Hidden symmetries and separability structures of Ovcharenko-Podolský and conformal-to-Carter spacetimes
Finnian Gray, David Kubiznak, Hryhorii Ovcharenko +1
Recently, a remarkable new class of spacetimes describing black holes immersed in a non-aligned electromagnetic field has been found. While still of type D, this class goes beyond…
On a lower-dimensional Killing vector origin of irreducible Killing tensors
Finnian Gray, Gloria Odak, Pavel Krtouš +1
Considering a spacetime foliated by co-dimension-2 hypersurfaces, we find the conditions under which lower-dimensional symmetries of a base space can be lifted up to irreducible Ki…
Love symmetry in higher-dimensional rotating black hole spacetimes
Finnian Gray, Cynthia Keeler, David Kubiznak +1
We develop a method for constructing a 1-parameter family of globally-defined Love symmetry generators in rotating black hole spacetimes of general dimension. The key ingredient is…
The Unruh-DeWitt model and its joint interacting Hilbert space
Erickson Tjoa, Finnian Gray
In this work we make the connection between the Unruh-DeWitt particle detector model applied to quantum field theory in curved spacetimes and the rigorous construction of the spin-…
Homogeneous Symmetry Operators in Kerr--NUT--AdS Spacetimes
Finnian Gray, David Kubiznak
It is well known that the Kerr--NUT--AdS spacetimes possess hidden symmetries encoded in the so-called principal Killing--Yano tensor. In this paper, focusing on the four-dimension…
The "neighborhood theorem" for the general relativistic characteristic Cauchy problem in higher dimension
Piotr T. Chrusciel, Roger Tagne Wafo, Finnian Gray
We show that the maximal globally hyperbolic solution of the initial-value problem for the higher-dimensional vacuum Einstein equations on two transversally intersecting characteri…
Carrollian Motion in Magnetized Black Hole Horizons
Finnian Gray, David Kubiznak, T. Rick Perche +1
We revisit the motion of massless particles with anyonic spin in the horizon of Kerr--Newman geometry. As recently shown, such particles can move within the horizon of the black ho…
Modest holography and bulk reconstruction in asymptotically flat spacetimes
Erickson Tjoa, Finnian Gray
In this work we present a "modest" holographic reconstruction of the bulk geometry in asymptotically flat spacetime using the two-point correlators of boundary quantum field theory…
Holographic reconstruction of asymptotically flat spacetimes
Erickson Tjoa, Finnian Gray
We present a "holographic" reconstruction of bulk spacetime geometry using correlation functions of a massless field living at the "future boundary" of the spacetime, namely future…
Generalized Lense--Thirring metrics: higher-curvature corrections and solutions with matter
Finnian Gray, Robie A. Hennigar, David Kubiznak +2
The Lense--Thirring spacetime describes a 4-dimensional slowly rotating approximate solution of vacuum Einstein equations valid to a linear order in rotation parameter. It is fully…
Slowly rotating black holes with exact Killing tensor symmetries
Finnian Gray, David Kubiznak
We present a novel family of slowly rotating black hole solutions in four, and higher dimensions, that extend the well known Lense-Thirring spacetime and solve the field equations…
Quantum imprints of gravitational shockwaves
Finnian Gray, David Kubiznak, Taillte May +2
Gravitational shockwaves are simple exact solutions of Einstein equations representing the fields of ultrarelativistic sources and idealized gravitational waves (shocks). Historica…
Symmetry operators for the conformal wave equation in rotating black hole spacetimes
Finnian Gray, Tsuyoshi Houri, David Kubiznak +1
We present covariant symmetry operators for the conformal wave equation in the (off-shell) Kerr-NUT-AdS spacetimes. These operators, that are constructed from the principal Killing…
Thermodynamics of Rotating NUTty Dyons
Alvaro Ballon Bordo, Finnian Gray, David Kubiznak
We extend the work on thermodynamics of Lorentzian NUTty solutions, by including simultaneously the effect of rotation and electromagnetic charges. Due to the fact that Misner stri…
Conformally Coupled Scalar in Rotating Black Hole Spacetimes
Finnian Gray, Ian Holst, David Kubiznak +3
We demonstrate separability of conformally coupled scalar field equation in general (off-shell) Kerr-NUT-AdS spacetimes in all dimensions. The separability is intrinsically charact…
Massive vector fields in Kerr--Newman and Kerr--Sen black hole spacetimes
Ramiro Cayuso, Oscar J. C. Dias, Finnian Gray +5
The superradiant instability modes of ultralight massive vector bosons are studied for weakly charged rotating black holes in Einstein--Maxwell gravity (the Kerr--Newman solution)…
Principal Tensor Strikes Again: Separability of Vector Equations with Torsion
Ramiro Cayuso, Finnian Gray, David Kubiznak +3
Many black hole spacetimes with a 3-form field exhibit a hidden symmetry encoded in a torsion generalization of the principal Killing--Yano tensor. This tensor determines basic pro…
The First Law for Rotating NUTs
Alvaro Ballon Bordo, Finnian Gray, Robie A. Hennigar +1
We address a long-standing problem of describing the thermodynamics of rotating Taub--NUT solutions. The obtained first law is of full cohomogeneity and allows for asymmetric distr…
Misner Gravitational Charges and Variable String Strengths
Alvaro Ballon Bordo, Finnian Gray, Robie A. Hennigar +1
As shown recently (arXiv:1903.08668), consistent thermodynamics of the Lorentzian Taub-NUT solutions with Misner strings present can be formulated provided a new pair of conjugate…
Thermodynamics and Phase Transitions of NUTty Dyons
Alvaro Ballon, Finnian Gray, David Kubiznak
Picking up the threads on a recent proposal [arXiv:1903.08668], we show how to formulate consistent thermodynamics of Lorentzian Taub-NUT spacetimes in the presence of electric and…
Thermodynamics of Charged, Rotating, and Accelerating Black Holes
Andres Anabalon, Finnian Gray, Ruth Gregory +2
We show how to obtain a consistent thermodynamic description of accelerating asymptotically AdS black holes, extending our previous results by including charge and rotation. We fin…
Scalar and fermionic Unruh Otto engines
Finnian Gray, Robert B. Mann
We investigate the behaviour of quantum heat engines, in which a qubit is put through the quantum equivalent of the Otto cycle and the heat reservoirs are due to the Unruh effect.…
Electrostatic limit of the -matrix for electromagnetic scattering: Exact results for spheroidal particles
Matt R. A. Majic, Finnian Gray, Baptiste Auguie +1
The -matrix, often obtained with Waterman's extended boundary condition method (EBCM), is a widely-used tool for fast calculations of electromagnetic scattering by particles. He…