Thermodynamic implications and observational constraints of interacting f(Q,T) gravity in FRW UniverseThis work investigates the dynamical evolution of the universe within the framework of symmetric teleparallel f(Q,T) gravity, where Q is the non-metricity scalar and T is…S. H. Shekh, S. B. Thool, Pankaj Kumar et al.·May 15, 2026SaveLearn
Nonlinear stability of continuously self-similar naked singularities for the Einstein-scalar field equations I: main resultsThis is the first part of a series of papers proving the nonlinear stability of a one-parameter family of continuously self-similar C1,α naked singularity solutions, with 0<α1, to the…Weihao Zheng·May 15, 2026SaveLearn
Non-minimal fluid Lagrangian couplingsGravitational models with non-minimal couplings involving functions of the matter Lagrangian and curvature have become popular in recent decades. By coupling the matter Lagrangian directly to the…Christian G. Boehmer, Erik Jensko, Eissa Al-Nasrallah·May 15, 2026SaveLearn
Detectability of avoided crossings in black hole ringdownsQuasinormal modes (QNMs) of black holes can exhibit avoided crossings (ACs), in which specific QNM frequencies approach each other while their amplitudes are enhanced and acquire nearly opposite…Hayato Imafuku, Naritaka Oshita, Hiroki Takeda·May 15, 2026SaveLearn
Gaussian fluctuations in the tunneling probability of a closed universeWe consider the quantum creation of a closed universe within the Euclidean path-integral formalism. An analytical expression for the tunneling probability is derived, including both the exponential…L. Salasnich·May 15, 2026SaveLearn
Nonlinear stability of continuously self-similar naked singularities for the Einstein-scalar field equations II: linearized stabilityThis is the second part of a series of papers proving the nonlinear stability of a one-parameter family of continuous self-similar C1,α naked singularity solutions, with 0<α1, to the…Jaydeep Singh, Weihao Zheng·May 15, 2026SaveLearn
The role of Wigner rotation in estimating the specific angular momentum of a Kerr spacetimeWe study the rotation of the polarization due to the gravitational field in the Kerr spacetime and the possibility of estimating the specific angular momentum that parameterizes this metric. Our…F. J. Lobo, M. Rivera-Tapia, G. Rubilar et al.·May 15, 2026SaveLearn
Regular black hole with sub-Planckian curvature and suppressed exponential mass inflationWe construct a static spherically symmetric regular black hole with a Minkowski core, and a degenerate inner horizon with vanishing surface gravity. The spacetime contains a non-extremal outer…Zhong-Wen Feng, Hong-Lin Liu, Yi Ling et al.·May 15, 2026SaveLearn
Charge-dependent scalarization of Einstein- Euler-Heisenberg black holesCharge-dependent scalarization of the Einstein-Euler-Heisenberg (EEH) black hole is carried out in the EEH-scalar theory by introducing an exponential scalar coupling with coupling constant α to…Lina Zhang, Yun Soo Myung, De-Cheng Zou et al.·May 15, 2026SaveLearn
A study on Dusty Plasma Physics and the examination of Jeans Criteria for the Milky WaySince the early 1990s, there has been significant interest in the physics of dusty plasmas, which has now become a new discipline in plasma science. Dusty plasma exhibits new and unusual behaviour,…Tanay Gupta, Isha Shailesh, Ram Prasad Prajapati·May 15, 2026SaveLearn
Energy Balance of a Boson Gas at Zero Temperature in Curved SpacetimeWe develop a comprehensive thermodynamic description for a zero-temperature boson gas in curved spacetime, integrating energy conservation with information-theoretic principles. Using the…Jorge Meza-Domínguez, Tonatiuh Matos, Pierre-Henri Chavanis·May 15, 2026SaveLearn
Quantum gravitational stellar evolution beyond shell-crossing singularitiesModels of effective stellar collapse inspired by loop quantum gravity predict a bounce when the stellar energy density reaches the Planck scale, typically followed by the formation of shell-crossing…Michał Bobula, Francesco Fazzini·May 15, 2026SaveLearn
Quantum sensing of high-frequency gravitational waves with ion crystalsA detection method for high-frequency gravitational waves using two-dimensional ion crystals is investigated. Gravitational waves can resonantly excite the drumhead modes of the ion crystal,…Asuka Ito, Ryuichiro Kitano, Wakutaka Nakano et al.·May 15, 2026SaveLearn
Exceptional Points and Resonance in Black Hole RingdownWe propose an exceptional-point (EP) framework for black-hole ringdown beyond the standard quasinormal-mode (QNM) paradigm. It provides a first-principles characterization of the resonance associated…Rodrigo Panosso Macedo, Takuya Katagiri, Kei-ichiro Kubota et al.·May 15, 2026SaveLearn
Cosmological viability of anisotropic inflation in Thurston spacetimesRecent observations of large-scale statistical isotropy violations have prompted the adoption of anisotropic cosmological models that account for inherent directional curvature. Studies of these…Devika J. S., Tanay Gupta, Sukanta Panda·May 15, 2026SaveLearn
Information Metrics and Possible Limitations of Local Information Objectivity in Quantum GravityLocal information objectivity, that local, independent observers can infer the same information about a model upon exchange of independently acquired experimental data, is fundamental to science. It…Per Berglund, Andrew Geraci, Tristan Hubsch et al.·May 15, 2026SaveLearn
Gravitational wave surrogate model for spinning, intermediate mass ratio binaries based on perturbation theory and numerical relativityWe present BHPTNRSur2dq1e3, a reduced order surrogate model of gravitational waves emitted from binary black hole (BBH) systems in the comparable to large mass ratio regime with aligned spin (χ1)…Katie Rink, Ritesh Bachhar, Tousif Islam et al.·May 15, 2026SaveLearn
Ringdown and echoes from compact objects: Debye series and Debye quasinormal modesWe introduce a new series decomposition of the waveform constructed in the spirit of Debye expansions in scattering theory, and we use this to analyse the time-domain response of compact, horizonless…Mohamed Ould El Hadj, Sam R. Dolan·May 14, 2026SaveLearn
The cosmological inflation inside the cyclic model of the universeInflationary cosmology explains the homogeneity and large-scale structure of the universe through a brief epoch of accelerated expansion following the Big Bang. Cyclic cosmologies, in contrast,…Kanabar Jay, Maxim Khlopov, Jan Novák·May 14, 2026SaveLearn
Polarization Analysis of Ringdown SignalsMerging binary black holes exhibit a ringdown phase in which they primarily emit gravitational waves in the shape of damped sinusoids corresponding to quasi-normal modes of the Kerr remnant. In…Nicole Khusid, Will Farr, Max Isi·May 14, 2026SaveLearn
Quantum Gravity Beyond the BulkWe propose an infrared and asymptotic formulation of quantum gravity adapted to external observers. In an asymptotic proper-time gauge, the physical generator of evolution reduces to the…Jorge Gamboa, Natalia Tapia-Arellano·May 14, 2026SaveLearn
N-body next-to-leading order gravitational spin-orbit interaction via effective field theoryUsing the post-Newtonian effective field theory (PN-EFT) formalism for spinning gravitating bodies, we derive the next-to-leading-order (NLO) spin-orbit potential and Hamiltonian for a system of N…Leonardo Wimmer, Hideyuki Tagoshi·May 14, 2026SaveLearn
Can a late-time cosmological model based on baby universe absorption explain the z-variation of w?We point out that a simple late-time cosmological model where our Universe can absorb "baby universes" explains the exponential expansion of our universe without the need of a cosmological…Jan Ambjorn, Yoshiyuki Watabiki·May 14, 2026SaveLearn
An Exact Single-Rotating Near-Horizon Geometry in Einstein-Gauss-Bonnet GravityWe construct a five-dimensional singly rotating near-horizon solution in Einstein-Gauss-Bonnet gravity. We show that the Gauss-Bonnet term removes the local curvature singularity, yielding finite…U. Can Çelik, Kamal Hajian, Jutta Kunz·May 14, 2026SaveLearn
Exploring the CMB in Anisotropic UniversesIn recent years, there have been increasing challenges to the cosmological principle, based on new observations of e.g. supernovae and the cosmic bulk flow. As a result, the cosmological community is…Robbert W. Scholtens, Marcello Seri, Holger Waalkens et al.·May 14, 2026SaveLearn