Results 91 to 100 of about 1,803 (203)

Counting Degrees of Freedom: A Method Applicable From Scalars to f(Q)$f(\mathbb {Q})$ Gravity and Beyond

Fortschritte der Physik, Volume 74, Issue 6, June 2026.
ABSTRACT We present a clear, step‐by‐step method for counting degrees of freedom and identifying constraints in general field theories. This approach, grounded in the works of Einstein, Hilbert, Cartan, Kuranishi, and, more recently, Seiler, is neither Lagrangian nor Hamiltonian in nature. Instead, it applies directly to the field equations. We offer a
Lavinia Heisenberg
wiley   +1 more source

Ringdown Modulation of Acceleration Radiation in the Schwarzschild Background

Fortschritte der Physik, Volume 74, Issue 6, June 2026.
ABSTRACT We derive an analytic first‐order description of how Schwarzschild ringdown affects a detector‐based detailed‐balance diagnostic in a near‐horizon, single‐mode setting. A freely falling two‐level system couples to a cavity‐filtered outgoing mode of fixed asymptotic frequency, whose static Schwarzschild response gives geometric photon ...
Reggie C. Pantig
wiley   +1 more source

Penrose’s singularity theorem in a Finsler spacetime [PDF]

Classical and Quantum Gravity, 2015
22 pages, version 3: added Remark 7.4 and Conclusion; cf.
Aazami, Amir Babak, Javaloyes, Miguel Angel   +1 more
openaire   +2 more sources

Topology-changing horizons at large D as Ricci flows

Journal of High Energy Physics, 2019
The topology-changing transition between black strings and black holes localized in a Kaluza-Klein circle is investigated in an expansion in the inverse of the number of dimensions D.
Roberto Emparan, Ryotaku Suzuki
doaj   +1 more source

Temporal Passage in a Fragmented World

Analytic Philosophy, Volume 67, Issue 2, Page 192-198, June 2026.
ABSTRACT Fragmentalism is a relatively recent and striking addition to the debate between tensed and tenseless theories of time. First introduced by Fine in “Tense and Reality,” it presents a rare instance of both a theoretically intriguing and novel theory of time.
Kyley Ewing
wiley   +1 more source

Infinite-Centre Gibbons-Hawking Metrics, Applied to Gravitational Instantons and Monopoles [PDF]

, 2010
We investigate the convergence of infinite-centre Gibbons-Hawking metrics, in the contexts of four-dimensional gravitational instantons and their applications, Kaluza-Klein monopoles and vortices, gravitational calorons, analytical extensions of Majumdar-
RUTLIDGE, KATIE
core  

Weak cosmic censorship with SU(2) gauge field and bound on charge-to-mass ratio

Journal of High Energy Physics
We numerically construct the stationary solutions of SU(2) Einstein-Yang-Mills theory in four dimensional anti-de Sitter spacetime. When the t component of the SU(2) gauge field is taken to the only nonzero component, we construct a class of ...
Yan Song, Si-Yuan Cui, Yong-Qiang Wang
doaj   +1 more source

Efficient Deconvolution in Populational Inverse Problems

International Journal for Numerical Methods in Engineering, Volume 127, Issue 9, 15 May 2026.
ABSTRACT This work is focused on the inversion task of inferring the distribution over parameters of interest, leading to multiple sets of observations. The potential to solve such distributional inversion problems is driven by the increasing availability of data, but a major roadblock is blind deconvolution, arising when the observational noise ...
Arnaud Vadeboncoeur, Mark Girolami, Andrew M. Stuart   +2 more
wiley   +1 more source

Singular vacuum solutions as singular matter solutions: Where do spacetime singularities come from?

, 2017
A direct evidence for the existence of spacetime singularities is the existence of singularities in vacuum solutions of the Einstein equation. A singular vacuum solution implies that spacetime itself may have singularities.
Wu-Sheng Dai, Yu-Zhu Chen
core   +1 more source

Towards classifying the interior dynamics of charged black holes with scalar hair

Journal of High Energy Physics
The study of the interior of hairy black holes has received significant attention recently. This paper builds upon our recent analytical approach to investigate the internal dynamics of charged black holes with scalar hair in general spacetime dimensions.
Rong-Gen Cai, Mei-Ning Duan, Li Li, Fu-Guo Yang   +3 more
doaj   +1 more source