{"total":11,"items":[{"citing_arxiv_id":"2606.30865","ref_index":47,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Scalarization and descalarization in hyperbolic encounters of black holes","primary_cat":"gr-qc","submitted_at":"2026-06-29T19:54:35+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Numerical relativity in the decoupling limit reveals dynamical scalarization and spin-induced (de)scalarization during hyperbolic black hole encounters for both signs of the coupling.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2604.27811","ref_index":20,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Spin-Induced Nonlinear Scalarization of Kerr Black Holes in Einstein-scalar-Gauss-Bonnet Gravity","primary_cat":"gr-qc","submitted_at":"2026-04-30T12:54:56+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":7.0,"formal_verification":"none","one_line_summary":"Kerr black holes in an EsGB model without linear instability undergo nonlinear scalarization above spin 0.5, existing in a finite low-mass high-spin wedge rather than a narrow band.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Equivalently, this condition givesf 1 =f 2 on the axis. For the even-parity scalarized branch considered here, reflection symmetry implies ∂θf0 =∂ θf1 =∂ θf2 =∂ θW=∂ θϕ= 0 atθ= π 2 .(19) The reflection symmetry imposed at the equatorial plane restricts the analysis to the even- parity sector, which is sufficient to capture the scalarized solutions considered in this work (see, e.g., [20] for parity-odd spin-induced scalarized solutions). 10 C. Extraction of physical quantities The ADM mass, angular momentum, and scalar charge are obtained from asymptotic fits of the metric components and the scalar field, gtt =−1 + 2M r +· · ·, g tφ =− 2J r sin2 θ+· · ·, ϕ(r) = Qs r +· · ·.(20) In practice, the fits are performed on the outermost finite radial points, excluding the com-"},{"citing_arxiv_id":"2604.20153","ref_index":21,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Thermodynamics and phase transitions of nonlinearly scalarized black holes in Einstein-scalar-Gauss-Bonnet theory","primary_cat":"gr-qc","submitted_at":"2026-04-22T03:33:47+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":4.0,"formal_verification":"none","one_line_summary":"Nonlinearly scalarized black holes in Einstein-scalar-Gauss-Bonnet theory undergo a first-order phase transition from Schwarzschild black holes with non-zero latent heat.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[19] L. G. Collodel, B. Kleihaus, J. Kunz and E. Berti, \"Spinning and excited black holes in Einstein-scalar-Gauss-Bonnet theory,\" Class. Quant. Grav.37(2020) no.7, 075018 [arXiv:1912.05382 [gr-qc]]. [20] S. Hod, \"Onset of spontaneous scalarization in spinning Gauss-Bonnet black holes,\" Phys. Rev. D102(2020) no.8, 084060 [arXiv:2006.09399 [gr-qc]]. [21] C. A. R. Herdeiro, E. Radu, H. O. Silva, T. P. Sotiriou and N. Yunes, \"Spin-induced scalarized black holes,\" Phys. Rev. Lett.126(2021) no.1, 011103 [arXiv:2009.03904 [gr-qc]]. [22] D. C. Zou and Y. S. Myung, \"Rotating scalarized black holes in scalar couplings to two topological terms,\" Phys. Lett. B820(2021), 136545 [arXiv:2104.06583 [gr-qc]]. [23] D."},{"citing_arxiv_id":"2604.13614","ref_index":105,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Scalarizations of magnetized Reissner-Nordstr\\\"om black holes induced by parity-violating and parity-preserving interactions","primary_cat":"gr-qc","submitted_at":"2026-04-15T08:27:26+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Magnetic fields lower the scalarization threshold for electromagnetic and gravitational Chern-Simons couplings but produce opposite trends on the two Gauss-Bonnet branches, with nonlinear terms converting exponential growth into bounded oscillations.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"12210 [gr-qc]]. [103] C. Herdeiro, E. Radu and E. dos Santos Costa Filho, \"Charged, rotating black holes in Einstein-Maxwell- dilaton theory,\" [arXiv:2506.15798 [gr-qc]]. [104] C. A. R. Herdeiro, E. Radu, H. O. Silva, T. P. Sotiriou and N. Yunes, \"Spin-induced scalarized black holes,\" Phys. Rev. Lett.126, no.1, 011103 (2021) [arXiv:2009.03904 [gr-qc]]. [105] E. Berti, L. G. Collodel, B. Kleihaus and J. Kunz, \"Spin-induced black-hole scalarization in Einstein- scalar-Gauss-Bonnet theory,\" Phys. Rev. Lett.126, no.1, 011104 (2021) [arXiv:2009.03905 [gr-qc]]. [106] S. Liu, Y. Liu, Y. Peng and C. Y. Zhang, \"Rotating scalarized supermassive black holes,\" Eur. Phys. J. C 85, no.8, 832 (2025) [arXiv:2503.13267 [gr-qc]]."},{"citing_arxiv_id":"2604.09350","ref_index":93,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Gravitational Memory from Hairy Binary Black Hole Mergers","primary_cat":"gr-qc","submitted_at":"2026-04-10T14:22:52+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":8.0,"formal_verification":"none","one_line_summary":"Gravitational memory from hairy binary black hole mergers in scalar-Gauss-Bonnet gravity differs from GR by a few percent due to altered nonlinear dynamics, with direct scalar contributions suppressed, and including memory increases GR-sGB mismatch by more than an order of magnitude.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"of No-Hair Theorems and Novel Black-Hole Solutions in Gauss-Bonnet Theories,\"Phys. Rev. Lett.120 no. 13, (2018) 131102,arXiv:1711.03390 [hep-th]. [92] P. V. P. Cunha, C. A. R. Herdeiro, and E. Radu, \"Spontaneously Scalarized Kerr Black Holes in Extended Scalar-Tensor-Gauss-Bonnet Gravity,\" Phys. Rev. Lett.123no. 1, (2019) 011101, arXiv:1904.09997 [gr-qc]. [93] L. G. Collodel, B. Kleihaus, J. Kunz, and E. Berti, \"Spinning and excited black holes in Einstein-scalar-Gauss-Bonnet theory,\"Class. Quant. Grav.37no. 7, (2020) 075018,arXiv:1912.05382 [gr-qc]. [94] E. Berti, L. G. Collodel, B. Kleihaus, and J. Kunz, \"Spin-induced black-hole scalarization in Einstein-scalar-Gauss-Bonnet theory,\"Phys. Rev. Lett. 126no."},{"citing_arxiv_id":"2604.08668","ref_index":27,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Minimum mass, maximum charge and hyperbolicity in scalar Gauss-Bonnet gravity","primary_cat":"gr-qc","submitted_at":"2026-04-09T18:00:16+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"In scalar Gauss-Bonnet gravity, black hole solutions below a tunable minimum mass lose hyperbolicity in perturbations, corresponding to EFT breakdown, but scalar charge stays bounded above.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"Kerr metric is solution of the field equations (5), with 3 constant scalar fieldϕ=ϕ 0. In part of the parameter space (M, a), additional (hairy) solutions exist [24, 26, 47, 48]. In these regions of the parameter space, (stable) hairy BH solution can be dynamically connected to the Kerr solution via a tachyonic instability associated with the process of spontaneous scalarization, see Ref. [27] for a review. We remark that in scalarization models stationary BHs do not have a minimum mass, as Kerr BHs are solutions for any mass. In certain models, stationary hairy solutions can have a minimum mass (e.g. [23, 42]) while in other models they can have arbitrarily low mass (e.g. [24]). However, as we shall discuss in Sec. II C, BHs in these models can become unstable, and the equations"},{"citing_arxiv_id":"2604.06592","ref_index":23,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Spin-charge induced scalarization of Kerr-Newman black holes in the Einstein-Maxwell-scalar theory with scalar potential","primary_cat":"gr-qc","submitted_at":"2026-04-08T02:23:04+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":6.0,"formal_verification":"none","one_line_summary":"Kerr-Newman black holes in EMS theory with scalar potential scalarize for spins below a threshold set by charge, scalar mass, and coupling strength.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"[21] C. A. R. Herdeiro, E. Radu, H. O. Silva, T. P. Sotiriou and N. Yunes, \"Spin-induced scalarized black holes,\" Phys. Rev. Lett.126, no.1, 011103 (2021) [arXiv:2009.03904 [gr-qc]]. [22] D. C. Zou and Y. S. Myung, \"Rotating scalarized black holes in scalar couplings to two topological terms,\" Phys. Lett. B820(2021), 136545 [arXiv:2104.06583 [gr-qc]]. [23] D. D. Doneva, L. G. Collodel and S. S. Yazadjiev, \"Spontaneous nonlinear scalarization of Kerr black holes,\" [arXiv:2208.02077 [gr-qc]]. [24] D. D. Doneva, L. G. Collodel, C. J. Krüger and S. S. Yazadjiev, \"Spin-induced scalarization of Kerr black holes with a massive scalar field,\" Eur. Phys. J. C80(2020) no.12, 1205 [arXiv:2009.03774 [gr-qc]]. [25] S."},{"citing_arxiv_id":"2512.02338","ref_index":99,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Leading effective field theory corrections to the Kerr metric at all spins","primary_cat":"gr-qc","submitted_at":"2025-12-02T02:16:25+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Numerical solutions show that leading effective-field-theory corrections to the Kerr metric grow with spin and are largest near extremality.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"40, 165001 (2023), arXiv:2212.07293 [gr-qc]. [96] A. Sullivan, N. Yunes, and T. P. Sotiriou, Phys. Rev. D103, 124058 (2021), arXiv:2009.10614 [gr-qc]. 7 [97] 'O. J. C. Dias, J. E. Santos, and B. Way, Class. Quant. Grav.33, 133001 (2016), arXiv:1510.02804 [hep-th]. [98] T. Delsate, C. Herdeiro, and E. Radu, Phys. Lett. B 787, 8 (2018), arXiv:1806.06700 [gr-qc]. [99] C. A. R. Herdeiro, E. Radu, H. O. Silva, T. P. Sotiriou, and N. Yunes, Phys. Rev. Lett.126, 011103 (2021), arXiv:2009.03904 [gr-qc]. [100] E. Berti, L. G. Collodel, B. Kleihaus, and J. Kunz, Phys. Rev. Lett.126, 011104 (2021), arXiv:2009.03905 [gr-qc]. [101] A. Eichhorn and P. G. S. Fernandes, Phys. Rev. D111, 104007 (2025), arXiv:2502.14717 [gr-qc]."},{"citing_arxiv_id":"2511.00307","ref_index":112,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Spin-up and mass-gain in hyperbolic encounters of spinning black holes","primary_cat":"gr-qc","submitted_at":"2025-10-31T23:11:47+00:00","verdict":null,"verdict_confidence":null,"novelty_score":null,"formal_verification":null,"one_line_summary":null,"context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null},{"citing_arxiv_id":"2503.12263","ref_index":182,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"The Science of the Einstein Telescope","primary_cat":"gr-qc","submitted_at":"2025-03-15T21:04:14+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":3.0,"formal_verification":"none","one_line_summary":"The paper provides state-of-the-art predictions for the Einstein Telescope's impact on fundamental physics, cosmology, compact-object astrophysics, and multi-messenger astronomy across its proposed configurations.","context_count":1,"top_context_role":"background","top_context_polarity":"background","context_text":"phase, which signals the breakdown of the perturbative expansion at late times. These developments clearly illustrate the need to further strengthen the theoretical backbone of modifications of GR, and in particular a consistent embedding into a complete framework. Another interesting aspect of scalar-tensor theories is the presence of so-called sponta- neous scalarization [179-182], where BHs with a non-trivial scalar field configuration are also solutions of the theory. For certain values of the mass and/or spin, the Kerr solution becomes unstable, and spontaneously grows a scalar field. The dynamics of this mechanism was stud- ied in the context of BBH merger, both in the limit of small coupling constant [183-185], and for finite couplings, within the modified harmonic formulation [163, 166, 167, 186]."},{"citing_arxiv_id":"2404.19521","ref_index":23,"ref_count":1,"confidence":0.9,"is_internal_anchor":false,"paper_title":"Existence of nonlinearly scalarized black holes in Einstein-scalar-Gauss-Bonnet theory with polynomial couplings","primary_cat":"gr-qc","submitted_at":"2024-04-30T12:50:10+00:00","verdict":"UNVERDICTED","verdict_confidence":"LOW","novelty_score":5.0,"formal_verification":"none","one_line_summary":"Nonlinearly scalarized black holes exist in EsGB theory for couplings ζ(φ)=αφ⁴−βφ⁸ and ζ(φ)=αφ⁴−βφ⁶ (but not pure quartic), with instability thresholds for Gaussian pulses and universal probe-limit branches that depend on β when backreaction is included.","context_count":0,"top_context_role":null,"top_context_polarity":null,"context_text":null}],"limit":50,"offset":0}