Conveners
Parallel sessions: Gravitational waves
- Yi-Ming Hu (Sun Yat-sen University)
Parallel sessions: Gravity - foundational aspects
- Sebastian Bahamonde (Institute for Basic Science)
Parallel sessions: Gravity - foundational aspects
- Nikodem Poplawski
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Fiona Panther (University of Western Australia)06/07/2026, 13:30Parallel Session Talk
We show how to coherently combine information from a population of sub-threshold, gravitational-wave binary neutron star post-merger remnants to constrain the hot nuclear equation of state. Although no individual event in our synthetic population can be claimed as a confident detection, we show how to statistically determine the fraction of merger events that promptly collapse to form a black...
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Luca Baiotti (The University of Osaka)06/07/2026, 13:50Parallel Session Talk
I will briefly review recent progress in numerical simulations of binary neutron star mergers, and discuss how these signals can help distinguish among different classes of equations of state, including hadronic models, quark–hadron crossover scenarios, and first-order phase transitions.
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We also investigate uncertainties in post-merger gravitational-wave emission using a non-parametric... -
Zhenwei Lyu (Leicester International Institute, Dalian University of Technology)06/07/2026, 14:10Parallel Session Talk
The subtraction of compact-binary foregrounds is a central challenge for stochastic gravitational-wave background searches with third-generation detector networks. In particular, it remains unclear whether imperfect removal of individually resolved binary black hole signals could produce a residual foreground that limits sensitivity to cosmological or astrophysical stochastic backgrounds....
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Prof. Kei-ichi MAEDA (Waseda University)06/07/2026, 14:30Parallel Session Talk
We study the dynamics of a binary system orbiting a rotating supermassive black hole (SMBH) and the resulting gravitational-wave signatures from such hierarchical three-body systems. To describe the motion in curved spacetime, we construct a local inertial frame using Fermi–Walker transport and treat the binary as a Newtonian system in this frame.
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For a binary whose center of mass follows a... -
Uddeepta Deka06/07/2026, 14:50Parallel Session Talk
Current searches for microlensing signatures in the detected gravitational wave (GW) events assume an isolated point mass lens (PML) model. However, the assumption of the lenses being isolated is overly simplistic, as these lenses are typically embedded within more complex structures, such as galaxies. In this paper, we extend the current lens model to incorporate external influences that...
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Yu-Sen Zhou (University of Science and Technology of China)08/07/2026, 13:30Parallel Session Talk
Total transmission modes (TTMs) are modes with complex frequencies that propagate across a black hole spacetime without reflection. Recently, it is found that suitably tailored time-dependent scattering can excite these complex modes and suppress the reflected signal for the entire duration of the process, a phenomenon referred to as virtual absorption. Motivated by this, we present a study of...
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Joshua Baines (The University of Melbourne)08/07/2026, 13:50Parallel Session Talk
Testing the Kerr hypothesis via gravitational wave data requires tools sensitive to potential deviations from general relativity. The Baines-Visser (BV) spacetime provides a well-motivated, maximally general parametrisation of axisymmetric stationary black hole spacetimes, encoding departures from classical Kerr via three radial functions: $\Phi(r)$, $\Delta(r)$, and $\Xi(r)$. In this talk I...
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Wei-Jia Li08/07/2026, 14:10Parallel Session Talk
Guided by the spirit of effective field theory, we construct homogeneous holographic models to describe strongly correlated phases with broken translational and rotational symmetry. These holographic systems retain background homogeneity, thereby enabling controllable and efficient computations. In this talk, I will introduce how these models capture key features of solids, including...
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Zi-Yu Tang08/07/2026, 14:30Parallel Session Talk
It is known that the axion-photon coupling can lead to quantum stimulated emission of photons and classic exponential amplification of electromagnetic (EM) fields at half the axion mass frequency, when the axion density or the coupling constant is sufficiently large. In this work, we studied the EM photon cloud induced from an axion cloud around a Kerr black hole in the first order of the...
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Dr Nikodem Poplawski (University of New Haven)08/07/2026, 14:50Parallel Session Talk
The conservation law for the orbital plus spin angular momentum of a free Dirac particle in curved spacetime requires that the affine connection has the antisymmetric part: the torsion tensor, which extends general relativity to the Einstein–Cartan theory of gravity. In the presence of torsion, the Dirac equation becomes a nonlinear, cubic equation in the spinor wave function. We show that the...
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Fu-Wen Shu (Nanchang University)09/07/2026, 13:30Parallel Session Talk
Constructing a complete and self-consistent quantum gravity theory stands as one of the most significant challenges in theoretical physics. The main difficulties arise from two aspects: the theoretical difficulty stemming from the dual nature of general relativity, and the experimental observational difficulty due to the prohibitively high energy scale of quantum gravity. To this day, we still...
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Chao Zhang (China University of Petroleum-Beijing)09/07/2026, 13:50Parallel Session Talk
Einstein-Aether theory extends general relativity by introducing a dynamical timelike vector field that breaks Lorentz symmetry/invariance, motivated by quantum gravity approaches including loop quantum gravity models. While maintaining self-consistency and passing all observational constraints, the theory permits superluminal gravitons that revolutionize black hole causal structure, namely,...
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Dingfang Zeng (Beijing University of Technology)09/07/2026, 14:10Parallel Session Talk
Through two exact solutions to the Einstein equation with sources, we show that general relativity allows two complementary descriptions for the microscopic state of BHs formed through gravitational collapse: (1) an ensemble of continuously contracting collapsars with close-to-implementing but never successfully implemented horizon in the Schwarzschild time definition, and (2) over-cross...
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Si-Jiang Yang (Hainan University)09/07/2026, 14:30Parallel Session Talk
In this talk, we establish an exact duality between the extended thermodynamics of five-dimensional charged Gauss-Bonnet AdS black holes and the thermodynamic framework of the dual boundary conformal field theory (CFT). The thermodynamics of the dual CFT involves two central charges originating from the trace anomaly. We demonstrate a precise correspondence between the extended first laws on...
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