Extensions of General Relativity II

Presentations

• Numerical solutions for rotating Black Holes in dynamical Chern-Simons theory

  ORAL

  March 18, 2026, 3:30 PM – March 18, 2026, 3:42 PM

  Presenters

  • Subhayu Bagchi

    • University of Mississippi

  Authors

  • Subhayu Bagchi

    • University of Mississippi

  • Karoly Csukas

    • Wigner Research Centre for Physics

  • Leo C Stein

    • University of Mississippi

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• Numerical relativity in biscalar gravity

  ORAL

  March 18, 2026, 3:42 PM – March 18, 2026, 3:54 PM

  Presenters

  • Chloe Richards

    • University of Illinois at Urbana-Champaign

  Authors

  • Chloe Richards

    • University of Illinois at Urbana-Champaign

  • Helvi Witek

    • University of Illinois at Urbana-Champaign

  • Cheng-Hsin Cheng

    • University of Illinois at Urbana-Champaign

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• The persistence of hair in binary mergers in Einstein–Maxwell–dilaton–axion gravity

  ORAL

  March 18, 2026, 3:54 PM – March 18, 2026, 4:06 PM

  Presenters

  • Andrew James Carroll

    • Brigham Young University

  Authors

  • Andrew James Carroll

    • Brigham Young University

  • Eric Winston Hirschmann

    • Brigham Young University

  • Hyun Lim

    • Los Alamos National Laboratory (LANL)

  • Sebastian V Fallon

    • Cornell University

  • David Van Komen

    • University of Utah

  • David W Neilsen

    • Brigham Young University

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• Probing quadratic gravity with black-hole ringdown gravitational waves measured by LIGO-Virgo-KAGRA detectors

  ORAL

  March 18, 2026, 4:06 PM – March 18, 2026, 4:18 PM

  Publication: arXiv:2506.14695

  Presenters

  • Chung Ka Wai

    • University of Cambridge
    • University of Illinois Urbana-Champaign

  Authors

  • Chung Ka Wai

    • University of Cambridge
    • University of Illinois Urbana-Champaign

  • Nicolas Yunes

    • University of Illinois at Urbana-Champaign

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• The ringing of a different bell: quasinormal modes and their excitation beyond general relativity

  ORAL

  March 18, 2026, 4:18 PM – March 18, 2026, 4:30 PM

  Publication: Phys.Rev.D 110 2, 024042 (2024)
  DOI: 10.1103/PhysRevD.110.024042

  Presenters

  • Hector O. Silva

    • University of Illinois Urbana-Champaign

  Authors

  • Hector O. Silva

    • University of Illinois Urbana-Champaign

  • Giovanni Tambalo

    • ETH Zürich

  • Kostas Glampedakis

    • University of Murcia

  • Kent Yagi

    • University of Virginia

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• On Measurable Physical Quantities in the Theory of Double Gravitational Fields

  ORAL

  March 18, 2026, 4:30 PM – March 18, 2026, 4:42 PM

  Publication: 1. Hai-Chao Zhang, Practical applications of a relativistic theory including tensor and scalar gravitation, Phys. Rev. D 111, 084030 (2025).
  2. Hai-Chao Zhang, Dynamical dark energy can amplify the expansion rate of the Universe, Phys. Rev. D 107, 103529 (2023).
  3. Hai-Chao Zhang, Xin-Ping Xu, Jing-Fang Zhang, and Chuan Wang, Could trapped quintessence account for the laser-detuning-dependent acceleration of cold atoms in varying-frequency time-of-flight experiments? Phys. Rev. D 105 102006 (2022).
  4. Hai-Chao Zhang, Obtaining a scalar fifth force via a symmetry-breaking coupling between the scalar field and matter, Phys. Rev. D 101, 044020 (2020). DOI: 10.1103/PhysRevD.101.044020.
  5. Hai-Chao Zhang, Obtaining a scalar fifth force for matter via a conformal coupling to the scalar field. arXiv:2210.10204 [gr-qc]
  6. H.-C. Zhang, Experimental demonstration of a fifth force due to chameleon field via cold atoms, arXiv: 1702.03050v1astro-ph. CO

  Presenters

  • HaiChao Zhang

    • Shanghai Inst of Opt & Fine Me

  Authors

  • HaiChao Zhang

    • Shanghai Inst of Opt & Fine Me

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• The Entropy of Dynamical Black Holes and Apparent Horizons

  ORAL

  March 18, 2026, 4:42 PM – March 18, 2026, 4:54 PM

  Presenters

  • Victor G Zhang

    • University of Chicago

  Authors

  • Victor G Zhang

    • University of Chicago

  • Stefan Hollands

    • University of Leipzig

  • Robert M Wald

    • University of Chicago

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• Beyond Trinity: The Many Faces of General Relativity

  ORAL

  March 18, 2026, 4:54 PM – March 18, 2026, 5:06 PM

  Presenters

  • Anish Agashe

    • St. Mary's College of Maryland

  Authors

  • Anish Agashe

    • St. Mary's College of Maryland

  • Damianos Iosifidis

    • Laboratory of Theoretical Physics, Institute of Physics, University of Tartu

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