Extensions of General Relativity I

Presentations

• Underlying mechanisms of the scalarization phase transition

  Oral-In-person

  March 18, 2026, 1:15 PM – March 18, 2026, 1:27 PM

  Presenters

  • Fethi M Ramazanoglu

    • Koc University

  Authors

  • Fethi M Ramazanoglu

    • Koc University

  • Murat Ozinan

    • Koc University

  • Kivanc Unluturk

    • Turkish-German University

  View abstract →

• Black holes with dark-photon hair

  Oral-In-person

  March 18, 2026, 1:27 PM – March 18, 2026, 1:39 PM

  Publication: F. Hancock and H. Witek, Phys. Rev. D 112, 044033 (2025), arXiv:2506.06554 [gr-qc].

  Presenters

  • Fredric Hancock

    • University of Illinois at Urbana-Champaign

  Authors

  • Fredric Hancock

    • University of Illinois at Urbana-Champaign

  • Helvi Witek

    • University of Illinois at Urbana-Champaign

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• Semi-analytic Modeling of Black Hole Superradiant Amplification Spectra in Conformally Invariant Gravity

  Oral-In-person

  March 18, 2026, 1:39 PM – March 18, 2026, 1:51 PM

  Presenters

  • Owen Gartlan

    • Grinnell College

  Authors

  • Owen Gartlan

    • Grinnell College

  • Shanshan Rodriguez

    • Grinnell College

  • Leo Rodriguez

    • Grinnell College

  • Yihan Shen

    • Grinnell College

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• Ringdown spectroscopy of phenomenologically modified black holesRingdown spectroscopy of phenomenologically modified black holes

  Oral-In-person

  March 18, 2026, 1:51 PM – March 18, 2026, 2:03 PM

  Publication: Phys. Rev. D 112, 064054 (2025)
  https://doi.org/10.1103/xtzl-lyn6

  Presenters

  • Spyridon Thomopoulos

    • University of Illinois Urbana-Champaign

  Authors

  • Spyridon Thomopoulos

    • University of Illinois Urbana-Champaign

  • Sebastian Völkel

    • Max Planck Institute for Gravitational Physics

  • Harald Pfeiffer

    • Max Planck Institute For Gravitational Physics (Albert Einstein Institute)

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• Gravitational-wave memory effects in the Damour-Esposito-Farèse extension of Brans-Dicke theory

  Oral-In-person

  March 18, 2026, 2:03 PM – March 18, 2026, 2:15 PM

  Publication: Phys. Rev. D 112, 084037

  Presenters

  • Shammi Tahura

    • University of Iowa

  Authors

  • Shammi Tahura

    • University of Iowa

  • David Nichols

    • University of Virginia

  • Kent Yagi

    • University of Virginia

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• Analytic and accurate approximate metrics for black holes with arbitrary rotation in beyond-Einstein gravity using spectral methods

  Oral-In-person

  March 18, 2026, 2:15 PM – March 18, 2026, 2:27 PM

  Publication: https://arxiv.org/abs/2510.05208
  https://arxiv.org/abs/2509.07061

  Presenters

  • Kelvin Ka-Ho Lam

    • University of Illinois at Urbana-Champaign

  Authors

  • Kelvin Ka-Ho Lam

    • University of Illinois at Urbana-Champaign

  • Chung Ka Wai

    • University of Cambridge

  • Nicolas Yunes

    • University of Illinois at Urbana-Champaign

  View abstract →

• The excitation of linear perturbations of higher dimensional black holes.

  Oral-In-person

  March 18, 2026, 2:27 PM – March 18, 2026, 2:39 PM

  Presenters

  • Patrizio Di Lorenzo

    • University of Illinois Urbana-Champaign

  Authors

  • Patrizio Di Lorenzo

    • University of Illinois Urbana-Champaign

  • Hector O. Silva

    • University of Illinois Urbana-Champaign

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• Solutions of the hyperbolic Ernst equation revisited

  Oral-In-person

  March 18, 2026, 2:39 PM – March 18, 2026, 2:51 PM

  Publication: We plan to submit the results to Phys. Rev. D (before Summit)

  Presenters

  • Debora Choinska

    • University of Warsaw

  Authors

  • Debora Choinska

    • University of Warsaw

  • Maciej Nieszporski

    • University of Warsaw

  • Adam Szereszewski

    • University of Warsaw

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• Exploration of Parameters in f(R,T) Gravity and Comparison with Various Datasets

  Oral-In-person

  March 18, 2026, 2:51 PM – March 18, 2026, 3:03 PM

  Publication: Exploration of Parameters in \textit{f}(\textit{R},\textit{T}) Gravity and Comparison with Type Ia Supernovae Data arXiv:2508.15014 [gr-qc]

  Presenters

  • Vincent Siggia

    • Wake Forest University

  Authors

  • Vincent Siggia

    • Wake Forest University

  • Eric Carlson

    • Wake Forest University

  • P. Lee Pryor

    • Wake Forest University

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