FALSE: The EPRL amplitude is supported on flat connectionsThere is an error in our recent preprint ``The EPRL amplitude is supported on flat connections''. The error is in Section 3. Here we leave the original text unchanged, but add a note in…Carlos E. Beltrán, José A. Zapata·Mar 17, 2026SaveLearn
The Structure of the Continuum Limit of Spin FoamsThe spin foam approach to quantum gravity aims at providing a covariant path-integral formulation of canonical loop quantum gravity. Since spin foam amplitudes are defined through discretizations of…Matteo Bruno, Eugenia Colafranceschi, Fabio M. Mele et al.·Mar 17, 2026SaveLearn
Violation of cosmic censorship in Einstein-Maxwell-Scalar models with fractional couplingThe weak cosmic censorship conjecture plays a foundational role in classical gravity by asserting that spacetime singularities are generically hidden behind event horizons. In this work, we explore…Yan-Qing Xu, Rui-Feng Zheng, Yu-Peng Zhang et al.·Mar 17, 2026SaveLearn
The imitation game (r)evolutions: Q-star effective shadow from GRMHD analysisQ-stars are a class of boson stars arising in scalar-field theories with interacting potentials, minimally coupled to gravity. We show that, in certain regions of parameter space, the angular…Víctor Jaramillo, Laura Meneses, Héctor R. Olivares Sánchez et al.·Mar 17, 2026SaveLearn
Extended Theories of Electrodynamics in f(R) GravityWithin the general framework of f(R) gravity, we introduce a function of the electromagnetic curvature invariant f(F) that couples minimally to gravitation to ensure a consistent…Francesco Bajardi, Micol Benetti, Salvatore Capozziello et al.·Mar 17, 2026SaveLearn
Dyonic Einstein-Maxwell-scalar black holes: the cold, the hot and the plungeWe investigate dyonic nonlinearly scalarized black holes in Einstein-Maxwell-scalar theory. The domain of existence of scalarized dyonic black holes consists of three branches. The cold branch and…Shun Chen, Xiao Yan Chew, Jutta Kunz·Mar 17, 2026SaveLearn
Testing general relativity with binary black holes: a study on the sensitivity requirements for future space-based detectorsWe study the sensitivity required for a future space-based detector to search for beyond general relativity effect in gravitational wave detection. To do this, we use the current design of TianQin,…Tangchao Zhan, Changfu Shi, Shuo Sun et al.·Mar 17, 2026SaveLearn
Energy Conditions in Gauss-Bonnet GravityWe study the Energy Conditions in modified f(G) gravity, with G being the topological Gauss-Bonnet term. Then we use the cosmographic parameters to constrain the functional form of the…Francesco Bajardi·Mar 17, 2026SaveLearn
Hawking-Page phase transitions of black holes in the Hamiltonian formalismThe Hawking-Page phase transition represents a critical phenomenon in black hole thermodynamics, marking the point at which a thermal radiation state in anti-de Sitter (AdS) spacetime becomes…Tran Ngoc Thien, Vo Quoc Phong·Mar 17, 2026SaveLearn
Viaggiu holographic dark energy in light of DESI DR2We test the cosmological viability of the Viaggiu holographic dark energy (VHDE) model by using late-time observational data. In particular, we place constraints on the free parameters of the model…Amlan K. Halder, Andronikos Paliathanasis, Stefano Viaggiu et al.·Mar 16, 2026SaveLearn
Logarithmically enhanced hyperbolic square-root deformation of Starobinsky inflationWe propose an enhanced hyperbolic square-root (HSQRT) deformation of the Starobinsky model in the context of f(R) gravity. The original HSQRT construction provided a globally regular modification…Andrei Galiautdinov·Mar 16, 2026SaveLearn
A minimal fractional deformation of Newtonian gravityWe consider a minimal fractional deformation of Newtonian gravity characterized by a single parameter α. In the limit α 1, the theory reduces to standard Newtonian gravity. Previous works…S. M. M. Rasouli·Mar 16, 2026SaveLearn
Quasi-pole quintessential inflation in metric-affine gravityWe study quintessential inflation in the framework of metric-affine gravity. It is well known that non-minimal couplings with the Holst invariant can generate a quasi-pole inflationary behaviour…Konstantinos Dimopoulos, Christian Dioguardi, Ioannis D. Gialamas et al.·Mar 16, 2026SaveLearn
Optical Magnus effect on gravitational lensingThe optical Magnus effect refers to transverse shift of a trajectory of light caused by its polarization and appears as a correction to geometrical optics at the linear order in wavelength. Here, we…Yusuke Nishida·Mar 16, 2026SaveLearn
Direct Waves in Black-Hole Binary Mergers: Insights from the Backwards One Body ModelThe merger-ringdown radiation from a black hole binary merger is accurately modeled by a sum of linear quasinormal modes (QNMs). Recently, a non-QNM ``direct wave" component of the radiation,…Anuj Kankani, Sean T. McWilliams·Mar 16, 2026SaveLearn
Plasma impact on black hole shadow and gravitational weak lensing for Schwarzschild-like black holeThis article delves into the observational properties of a Schwarzschild-like black hole (BH). Initially, the research provides a succinct examination of the spacetime geometry and the configuration…Weiqiang Yang, Mirzabek Alloqulov, Ahmadjon Abdujabbarov et al.·Mar 16, 2026SaveLearn
The peculiar case of the Viaggiu holographic dark energyWe study the plausibility of a holographic dark energy (HDE) model using the form of horizon entropy proposed by Viaggiu in 2014. This form of entropy is a generalization of the usual…Somnath Saha, Subhajit Saha, Nilanjana Mahata·Mar 16, 2026SaveLearn
Cosmological angular momentum from quantum rotationThe origin of cosmic angular momentum is a fundamental question in structure formation. We propose a novel mechanism that generates spatial angular momentum directly from quantum fluctuations during…Bo-Qiang Lu·Mar 16, 2026SaveLearn
Dark Matter Induced Scalarization as a Possible Solution to the Hyperon PuzzleWe investigate the properties of neutron stars when a massive scalar field, which could comprise all dark matter, is non-minimally coupled to the Ricci scalar. This coupling generates additional…Suchana Adhikari, Teruaki Suyama·Mar 16, 2026SaveLearn
Can wormhole spacetimes in Unimodular Gravity be supported by ordinary matter? A general proof of the exotic matter requirementWe establish a general no--go theorem demonstrating that all traversable wormhole configurations in Unimodular Gravity necessarily require exotic matter. The proof relies solely on the geometric…Mauricio Cataldo, Norman Cruz, Patricio Salgado·Mar 16, 2026SaveLearn
Scalaron excitation by topological vortices in quadratic f(R) gravity on a BTZ black hole backgroundIn three spacetime dimensions, pure Einstein gravity admits no local propagating degrees of freedom, yet nontrivial gravitational backgrounds such as the BTZ black hole provide a natural arena to…C. A. S. Almeida, F. C. E. Lima·Mar 15, 2026SaveLearn
Cosmic anisotropic hair of nonlocal RT gravityNonlocal RT gravity has proven effective in explaining the late-time cosmic acceleration while remaining consistent with local gravity tests. However, most previous cosmological studies of this…Jiajun Zhou, Shuxun Tian, Zong-Hong Zhu·Mar 15, 2026SaveLearn
Periodic orbits and gravitational waveforms of black holes in bumblebee gravityIn this paper, we investigate the dynamics of massive particles and the associated gravitational waveforms in the spacetime of a black hole within the framework of Einstein-Bumblebee gravity. Our…Zijian Shi, Xiangdong Zhang, Yunlong Liu·Mar 15, 2026SaveLearn
Isomorphism between the local Poincare generalized translations group and the group of spacetime transformations (x LB1)4We will prove that there is a direct relationship between the Poincare subgroup of translations, and the group of tetrad transformations LB1 introduced in a previous manuscript. LB1 is the group…Alcides Garat·Mar 15, 2026SaveLearn
All-sky Searches for Continuous Gravitational Waves from Isolated Neutron Stars in the Data from the First Part of the Fourth LIGO-Virgo-KAGRA Observing RunWe present results from an all-sky search for continuous gravitational waves, using three different methods applied to the first eight months of LIGO data from the fourth LIGO-Virgo-KAGRA…The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration et al.·Mar 15, 2026SaveLearn