CosmoGravitas II

from Monday, 16 November 2026 (08:00) to Friday, 20 November 2026 (17:00)
Pattaya, Thailand (D Varee Jomtien Beach Pattaya Hotel)

        : Sessions
    /     : Talks
        : Breaks
16 Nov 2026
17 Nov 2026
18 Nov 2026
19 Nov 2026
20 Nov 2026
AM
09:00 --- Opening ceremony ---
09:20 --- Break ---
09:30 Plenary — Shinji Tsujikawa: Dark Energy with Stable Phantom-Divide Crossing: Model Construction and Observational Constraints   (D Varee Jomtien Beach Pattaya Hotel)
10:30 --- Coffee break ---
11:00 Plenary — Antonio De Felice: From Data to Dynamics: A Simple Phantom-Crossing Dark Energy Parametrization   (D Varee Jomtien Beach Pattaya Hotel)
09:30 Plenary — Luis Ureña López   (D Varee Jomtien Beach Pattaya Hotel)
10:30 --- Break ---
11:00 Plenary — Takashi Hiramatsu: Cosmological Constraints on Extended Theories of Gravity from CMB Observations   (D Varee Jomtien Beach Pattaya Hotel)
09:30 Plenary — T.R. Govindarajan   (D Varee Jomtien Beach Pattaya Hotel)
10:30 --- Coffee break ---
11:00 Plenary — Ryo Saito: Probing the Early Universe with Gravitational-Wave Background Anisotropies: Universal Structures at Large Angles   (D Varee Jomtien Beach Pattaya Hotel)
09:30 Online Plenary — Kent Yagi: Gravitational-Wave Tests of String-Inspired Gravity   (D Varee Jomtien Beach Pattaya Hotel)
10:30 --- Coffee break ---
11:00 Plenary — Masashi Kimura: Black Hole Quasinormal Modes and the Non-Uniqueness of Effective Potentials   (D Varee Jomtien Beach Pattaya Hotel)
09:30 Plenary — Peera Simakachorn   (D Varee Jomtien Beach Pattaya Hotel)
10:30 --- Coffee break ---
11:00 Plenary — Avik De: The Non-Metricity Gravity Approach   (D Varee Jomtien Beach Pattaya Hotel)
PM
12:00 --- Lunch ---
13:00 Contributory: Can Gravity Take Us Beyond the Standard Picture of the Universe? Cosmology in Extended Proca-Nuevo Gravity - Dr Kavya Nagarakodige Shashikantha (Universiti Malaya)   (D Varee Jomtien Beach Pattaya Hotel)
13:15 Contributory: From CPL to Canonical Fields: Constraining Quintessence with the Tomographic AP Test - Zahra Davari (Korea Institute for Advanced Study (KIAS))   (D Varee Jomtien Beach Pattaya Hotel)
13:30 Contributory: A unified framework to study $f$-family of modified gravity theories - Dr Saikat Chakraborty (Institute of Research and Development, Duy Tan University, Vietnam)   (D Varee Jomtien Beach Pattaya Hotel)
13:45 Contributory: Breaking the Taylor Barrier in Cosmology - SAI SWAGAT MISHRA (BITS PILANI, Hyderabad Campus)   (D Varee Jomtien Beach Pattaya Hotel)
14:00 Contributory: Background and Perturbation Constraints on Spinor Field Dark Energy from Recent Cosmological Observations - Dr Mahendra Goray (Dept. of Physics, S.P College, Sido Kanhu Murmu University, Dumka, Jharkhand)   (D Varee Jomtien Beach Pattaya Hotel)
14:15 Contributory: Dynamical analysis of Bianchi type-IX cosmology with a scalar field mediated dark sector interaction - Ashmita . (Khon Kaen University)   (D Varee Jomtien Beach Pattaya Hotel)
14:30 --- Break ---
15:00 Flash Talk: Geometry and Stability of Wormholes in Symmetric Teleparallel Gravity with Dark Energy and Rotation Profiles - Mr Sourav NA (Central University of Haryana)   (D Varee Jomtien Beach Pattaya Hotel)
15:02 Flash Talk: Modified Chaplygin gas with recent observations in f(Q,B) gravity - Dr. Sanasam Surendra Singh (NIT MANIPUR)   (D Varee Jomtien Beach Pattaya Hotel)
15:04 Flash Talk: Kuchowicz gravastars in Horava gravity and Einstein-aether theory - Meghanil Sinha (National Institute of Technology Manipur)   (D Varee Jomtien Beach Pattaya Hotel)
15:06 Flash Talk: Fermion condensate at the event horizon - Vladimir Dzhunushaliev (al-Farabi KazNU)   (D Varee Jomtien Beach Pattaya Hotel)
15:08 Flash Talk: Observational constraints on Fractional Holographic Dark Energy in $f(T)$ gravity - Mr Chingkheinganba Meetei Elangbam (National Institute of Technology, Manipur, Imphal, India)   (D Varee Jomtien Beach Pattaya Hotel)
15:10 Flash Talk: Probing Energy Flow in the Dark Sector with DESI DR2 - Vipin Kumar Sharma (Universty of Punjab, Lovely Professional University)   (D Varee Jomtien Beach Pattaya Hotel)
15:12 --- Poster viewing — Session A ---
16:30 Online Plenary — Eleonora Di Valentino: Cracks in the Standard Cosmological Model: Tensions, Robustness, and Hints of New Physics   (D Varee Jomtien Beach Pattaya Hotel)
12:00 --- Lunch ---
13:00 Online Plenary — Elisa G. M. Ferreira: Probing the Particle Physics of Ultralight Dark Matter: From Galaxies to the Solar System   (D Varee Jomtien Beach Pattaya Hotel)
14:00 Contributory: JWST-informed Cosmological Inference from 21-cm Tomography - Madhurima Choudhury (Birla Institute of Technology and Science, Pilani - Hyderabad campus.)   (D Varee Jomtien Beach Pattaya Hotel)
14:15 Contributory: Model-Independent Evidence for a Localized Anomaly in the Late-Time Expansion History - Shibendu Gupta Choudhury (Indian Institute of Astrophysics)   (D Varee Jomtien Beach Pattaya Hotel)
14:30 --- Break ---
15:00 Online Plenary — Roy Maartens: Testing the Standard Model of Cosmology   (D Varee Jomtien Beach Pattaya Hotel)
16:00 Contributory: Testing Sub-Horizon Approximations in Interacting Dark-Sector Cosmology - Priyanka Saha (IIT kanpur)   (D Varee Jomtien Beach Pattaya Hotel)
16:15 Contributory: Inflationary trispectrum of gauge fields from scalar and tensor exchanges - Jishnu Sai Puthiyedath (Ewha Womans University, Seoul)   (D Varee Jomtien Beach Pattaya Hotel)
16:30 Contributory: Non-Trivial Cosmology from Fractal Spacetime, Memory Effects, and Modified Gravity - Aarav Shah   (D Varee Jomtien Beach Pattaya Hotel)
16:45 Contributory: Aspects of Spontaneous Symmetry Breaking in Cosmology - Malavika K (Vellore Institute of Technology)   (D Varee Jomtien Beach Pattaya Hotel)
17:00 Contributory: The Ringdown and the Tide: Fingerprints of Dark Matter Halo Profiles - Avijit Chowdhury (Indian Institute of Astrophysics)   (D Varee Jomtien Beach Pattaya Hotel)
12:00 --- Lunch ---
12:00 --- Lunch ---
13:00 Plenary — Atsushi Naruko: Understanding Cosmological Perturbations through the Separate-Universe Approach   (D Varee Jomtien Beach Pattaya Hotel)
14:00 Contributory: f(R) gravity scalarons near black hole horizon - Pranjali Bhattacharjee (Gauhati University)   (D Varee Jomtien Beach Pattaya Hotel)
14:15 Contributory: Homothetic Killing Horizons in Vaidya and Kerr–Vaidya Black Holes - Ritwika Ghoshal (Indian Institute of Technology Kanpur)   (D Varee Jomtien Beach Pattaya Hotel)
14:30 --- Break ---
15:00 Flash talk: Chaotic scattering in binary black hole systems - Sampurna Bhar (Indian Institute of Technology, Madras)   (D Varee Jomtien Beach Pattaya Hotel)
15:02 Flash talk: Phantom divide crossing with interacting scalar fields - Akshara S B (VELLORE INSTITUTE OF TECHNOLOGY, VELLORE)   (D Varee Jomtien Beach Pattaya Hotel)
15:04 Flash talk: A Potential Black Hole Mimicker From Curvature-Matter Coupled Theory of Gravity - Debanjan Debnath (Indian Institute of Technology Kanpur)   (D Varee Jomtien Beach Pattaya Hotel)
15:06 Flash talk: Dark Energy and Black Holes - Bisweswar Sen   (D Varee Jomtien Beach Pattaya Hotel)
15:08 Flash talk: Beyond ΛCDM: Probing Structure Growth and Observational Viability of Generalized f (Q, Lm) Gravity - Mr RAJ KUMAR DAS (Physics And Applied Mathematics Unit ,Indian Statistical Instiute Kolkata)   (D Varee Jomtien Beach Pattaya Hotel)
15:10 Flash talk: Late-Time Dynamics in Accelerating Nonlinear f (T ) Gravity via Hybrid Scale Factor : Bayesian Analysis and Cosmological implications - Dr Pratik P. Ray (Vellore Institute of Technology-AP University)   (D Varee Jomtien Beach Pattaya Hotel)
15:12 --- Poster viewing — Session B ---
16:00 Online Plenary — Laura Iacconi: Primordial black holes from inflation: on the decoupling between large and small scales   (D Varee Jomtien Beach Pattaya Hotel)
12:00 Contributory: Classical Eikonal for Binary Black Hole Scattering in Dark Matter Backgrounds - Arpita Mitra (CTP NAS, Mahidol University, Nakhon Sawan campus)   (D Varee Jomtien Beach Pattaya Hotel)
12:15 Contributory: Nature of the dark matter distribution near the Galactic Center black hole: Insights from stellar orbital precession - Mr Debojit Paul (Department of Physics, Gauhati University)   (D Varee Jomtien Beach Pattaya Hotel)
12:30 Contributory: Quintom dark energy: Future attractor and phantom crossing in light of DESI DR2 observations - Phusuda Thanankullaphong (Centre for Theoretical Physics and Natural Philosophy, Mahidol University)   (D Varee Jomtien Beach Pattaya Hotel)
12:45 --- Summary and Closing ---