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2026 CAP Congress / Congrès de l'ACP 2026

21–26 Jun 2026
U. Ottawa - Learning Crossroads (CRX) Building
America/Toronto timezone
Welcome to the 2026 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2026!

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Session

(DTP) M3-2 | (DPT)

M3-2
22 Jun 2026, 16:15
U. Ottawa - Learning Crossroads (CRX) Building

U. Ottawa - Learning Crossroads (CRX) Building

100 Louis-Pasteur Private, Ottawa, ON K1N 9N3

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  1. 512. Compact Objects in regularized 4D Einstein-Gauss-Bonnet Gravity
    Michael Gammon (University of Waterloo)
    22/06/2026, 16:15
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

    Since the derivation of a well-defined $D\rightarrow 4$ limit for 4 dimensional Einstein Gauss-Bonnet (4DEGB) gravity coupled to a scalar field, there has been considerable interest in testing it as an alternative to Einstein's general theory of relativity. Using the Tolman-Oppenheimer-Volkoff (TOV) equations modified for charge and 4DEGB gravity, we model the stellar structure of neutron...

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  2. 521. Accelerating Black Holes in 3D Einstein-Gauss-Bonnet Gravity
    Cendikiawan Suryaatmadja (University of Waterloo)
    22/06/2026, 16:30
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle)

    We present a class of exact analytical solutions of the Einstein-Gauss-Bonnet gravity in 2+1 dimensions. This solution is obtained by imposing restrictive conditions on the field equations. In particular, the modified gravity metric in Cartesian coordinates equals the C-metric multiplied by a factor which, along with the massless scalar field, depends purely on a single variable. In the zero...

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  3. 508. Thermal Origin of the Attractor-to-General-Relativity in Scalar-Tensor Gravity
    Valerio Faraoni
    22/06/2026, 16:45
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral (Non-Student) / Orale (non-étudiant(e))

    Whether scalar-tensor gravity approaches general relativity or departs from it (e.g, in the early universe) can be described using an analogy with heat dissipation in a viscous fluid. We apply this thermal analogy to cosmology. As a result, we understand why gravity can deviate from general relativity in the early universe and approaches it later in the cosmic history, as originally proposed...

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  4. 545. Measuring cosmic bulk flow with kinetic Sunyaev-Zel'dovich (kSZ) velocity reconstruction
    Dr Suroor Seher Gandhi (Perimeter Institute for Theoretical Physics)
    22/06/2026, 17:00
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral (Non-Student) / Orale (non-étudiant(e))

    The average large-scale velocity of matter in the universe, known as bulk flow, is a fundamental test of the Cosmological Principle. Traditionally, this has been measured only out to $R\lesssim 100$ megaparsecs (Mpc). We present an application of kinetic Sunyaev-Zel'dovich (kSZ) velocity reconstruction to constrain bulk flow on cosmological scales more than an order of magnitude...

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  5. 597. Additional Novel Cosmological Models
    Patrick Kelly (University of Mary)
    22/06/2026, 17:15
    Theoretical Physics / Physique théorique (DTP-DPT)
    Oral (Non-Student) / Orale (non-étudiant(e))

    At the 2025 CAP meeting, a vacuum (Riemann-flat) exact cosmological solution with the novel feature of being essentially independent of the precise functional form of the cosmological scale factor was presented and discussed. Here, the cases in which the cosmological constant is non-zero and matter in the form of pressureless dust acts as a gravitational source are considered.

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