Second Chennai Symposium on Gravitation and Cosmology
February 2-5, 2022
The Symposium
Chennai presently has three major institutes that have research groups working in the areas of gravitation and cosmology: Chennai Mathematical Institute (CMI), Indian Institute of Technology Madras (IIT-M), and the Institute of Mathematical Sciences (IMSc). The Chennai Symposium on Gravitation and Cosmology (CSGC) is a joint effort of the faculty at the three institutions. The aims of the Symposium can be said to be two-fold: (i) to showcase Chennai as an attractive destination for research in the areas of gravitation and cosmology, and (ii) to provide exposure to graduate students and post-doctoral fellows to the recent developments in these areas.
The First CSGC was held during January 22-24, 2020. We had envisaged CSGC as a biennial meeting and the second meeting will be held during February 2-5, 2022. The meeting will be supported by the Centre for Strings, Gravitation and Cosmology, a newly instituted Centre for Excellence at IIT Madras.
Scientific organizing committee
- Dhiraj Kumar Hazra, IMSc
- Jérôme Martin, Institut d’Astrophysique de Paris, Paris, France
- B. S. Sathyaprakash, Pennsylvania State University, USA and Cardiff University, UK
- L. Sriramkumar, IIT-M
- Sumati Surya, Raman Research Institute, Bengaluru
- Amitabh Virmani, CMI
Local organizing committee (all from IIT-M)
- Divyajyoti
- Hari K
- Dawood Kothawala
- M. Laxman
- Suvashis Maity
- Chandra Kant Mishra
- Kaushik Paul
- H. V. Ragavendra
- L. Sriramkumar
- Sagarika Tripathy
Registration and receiving links to connect for the meeting
Because of the uncertainty due to the pandemic, we will be holding the meeting online over Zoom. Due to various constraints, we are only able to accommodate invited talks.
The registration for the meeting is closed. We will be sharing the link with the registered participants for connecting to the meeting. Occassionally, we have noticed that our emails with the link go into spam. In case you do not receive the link for the meeting, please write to us at csgc.iitm@gmail.com.
We should also mention that there is a separate link to connect for the Chandrasekhar lecture. We would request you register at this link for the lecture.
Schedule (click here to download a PDF file of the schedule)
Note that all dates and times below (and in the PDF file of the schedule at the above link) are in Indian Standard Time (IST). IST is behind Korean Standard Time by 3:30 hours, ahead of Central European Winter Time by 4:30 hours, Greenwich Mean time by 5:30 hours and Eastern Standard Time by 10:30 hours.
Wednesday, February 2
| Time | Speaker | Title | |
|---|---|---|---|
| Chair: L. Sriramkumar Co-hosts: Arul Lakshminarayan, Sumati Surya |
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| 09:15-09:30 | Introductory remarks by L. Sriramkumar (on behalf of LOC), Arul Lakshminarayan (on behalf of Department of Physics, IIT Madras) and Sumati Surya (on behalf of SOC) | ||
| Chair: Sumati Surya Co-hosts: M Laxman, H. V. Ragavendra | |||
| 09:30-10:15 | K. G. Arun | Testing general relativity using compact binaries | |
| 10:15-11:00 | Dawood Kothawala | Reconstructing spacetime geometry from non-local bi-tensors - from Synge's 'world' function to the quantum spacetime | |
| 11:00-11:30 | Coffee break | ||
| Chair: Dawood Kothawala Co-hosts: Suvashis Maity, Sagarika Tripathy |
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| 11:30-12:00 | Rajeev Jain | Cosmological imprints of dynamical gauge fields during inflation | |
| 12:00-12:30 | Srijit Bhattacharjee | Black holes with supertranslation memories | |
| 12:30-14:00 | Lunch break | ||
| Chair: Rajeev Jain Co-hosts: M Laxman, Kaushik Paul | |||
| 14:00-14:45 | Sebastien Clesse | Primordial black holes in the early universe | |
| 14:45-15:15 | Shilpa Kastha | Tests of general relativity with the gravitational wave observations | |
| 15:15-15:30 | Rajes Ghosh | Causality constraints in quadratic gravity | |
| 15:30-15:45 | Hari K | Tidal versus absolute acceleration effects on Rindler probes | |
| 15:45-16:00 | Abhishek Mathur | Spacetime entanglement entropy of quantum fields in de Sitter spacetime | |
| 16:00-18:00 | Long break | ||
| Chair: Manjari Bagchi Co-hosts: Sagarika Tripathy, Divyajyoti | |||
| 18:00-18:15 | Vaishak Prasad | Tidal deformations of dynamical horizons in binary black hole mergers | |
| 18:15-18:45 | Vishal Baibhav | Parents of LIGO’s black holes and their hometown | |
| 18:45-19:30 | Eugenio Bianchi | Quantum gravity and quantum information | |
Thursday, February 3
| Time | Speaker | Title |
|---|---|---|
| Chair: Sumanta Chakraborty Co-hosts: Suvashis Maity, Hari K | ||
| 09:30-10:15 | Arman Shafieloo | Beyond the standard model of cosmology |
| 10:15-11:00 | Alok Laddha | Soft theorems in classical and quantum gravity |
| 11:00-11:30 | Coffee break | |
| Chair: K. G. Arun Co-hosts: M Laxman, Kaushik Paul, L. Sriramkumar | ||
| 11:30-11:45 | Divyajyoti | Observing higher modes of gravitational radiation in future detectors |
| 11:45-12:00 | Parthapratim Mahapatra | Clues on hierarchical binary black hole mergers from kick velocity inferences |
| 12:00-12:15 | Koustav Chandra | Hunting for intermediate-mass black hole with international gravitational-wave observatory network |
| 12:15-12:30 | Pankaj Saini | Systematic biases on parameterized tests of general relativity due to neglect of orbital eccentricity |
| 12:30-14:00 | Lunch break | |
| Chair: V. Sreenath Co-hosts: Suvashis Maity, Sagarika Tripathy | ||
| 14:00-14:45 | Mairi Sakellariadou | Gravitational waves: The theorist's swiss knife |
| 14:45-15:00 | Akhil Antony | Signature from early universe solves major anomalies and tensions in cosmology |
| 15:00-15:15 | H. V. Ragavendra | Modifications to secondary gravitational waves due to scalar non-Gaussianity |
| 15:15-15:30 | Amaury Micheli | Quantum discord and decoherence of inflationary perturbations |
| 15:30-16:00 | Coffee break | |
| Chair: L. Sriramkumar Co-hosts: Sagarika Tripathy, H. V. Ragavendra | ||
| 16:00-17:00 | Kandaswamy Subramanian | Chandrasekhar lecture: Magnetizing the universe |
| 17:00-18:00 | Long break | |
| Chair: Chandra Kant Mishra Co-hosts: Suvashis Maity, Divyajyoti | ||
| 18:00-18:30 | Guillem Domenech | Gravitational waves from primordial fluctuations |
| 18:30-19:15 | Anuradha Gupta | Observation and astrophysics of gravitational waves: Current status and future prospects |
| 19:15-19:45 | Aaron Held | Black holes beyond general relativity: shadows, stability, and nonlinear evolution |
Friday, February 4
Saturday, February 5
| Time | Speaker | Title |
|---|---|---|
| Chair: Rajesh Nayak Co-hosts: Suvashis Maity, Hari K | ||
| 09:30-10:00 | Debaprasad Maity | Gravitational reheating and it's observable effects |
| 10:00-10:15 | Debodirna Ghosh | Supertranslations at timelike infinity |
| 10:15-10:30 | Shanmugapriya Prakasham | Black hole hair removal for N = 4 CHL models |
| 10:30-10:45 | Srijita Sinha | Perturbations in a dark energy model |
| 10:45-11:00 | Ruchika | A growing universe... and tension |
| 11:00-11:30 | Coffee break | |
| Chair: Debaprasad Maity Co-hosts: M Laxman, Hari K | ||
| 11:30-12:00 | Anuradha Samajdar | Constraints on neutron star equation of state from future gravitational wave observations |
| 12:00-12:30 | Eleni-Alexandra Kontou | On semiclassical singularity theorems |
| 12:30-14:00 | Lunch break | |
| Chair: Alok Ladha Co-hosts: Divyajyoti, L. Sriramkumar | ||
| 14:00-14:45 | Atsushi Higuchi | Hartle-Hawking state in de Sitter spacetime |
| 14:45-15:30 | Vincent Vennin | Can we prove that cosmic structures are of quantum mechanical origin? |
| 15:30-15:45 | Raghvendra Singh | Covariant formulation of the generalized uncertainty principle |
| 15:45-16:00 | Chandramouli Chowdhury | Holography from the Wheeler-DeWitt equation |
| 16:00-16:15 | Prerna Rana | Astrophysically relevant geodesics in Kerr spacetime |
| 16:15-16:35 | Amitabh Virmani | Summary of the meeting |
| 16:35-16:45 | Vote of thanks by Dawood Kothawala (on behalf of LOC) | |
Participants
Click here to download a file containing the complete list of participants.