Name: Cosmic Origins and the Search for New Physics
Start: 2026-01-19T05:15:00+05:30
End: 2026-01-23T20:00:00+05:30
Location: Indian Institute of Technology Madras, Research Park

Cosmic Origins and the Search for New Physics

from Monday 19 January 2026 (05:15) to Friday 23 January 2026 (20:00)

Monday 19 January 2026

09:30 Welcome

09:30 - 09:45
Room: Saha and Sarabhai Auditoriums

09:45 Loop corrections to inflationary power spectra: Matteo Braglia
Matteo Braglia
09:45 - 10:30
Room: Saha and Sarabhai Auditoriums

10:30 Coffee Break
Coffee Break
10:30 - 11:00
Room: Saha and Sarabhai Auditoriums

11:00 Testing cosmic inflation with gravitational wave experiments: Gianmassimo Tasinato
Gianmassimo Tasinato
11:00 - 11:45
Room: Saha and Sarabhai Auditoriums

11:45 Gravitational Reheating: Debaprasad Maity
Debaprasad Maity
11:45 - 12:15
Room: Saha and Sarabhai Auditoriums

12:15 TBA: Samsuzzaman Afroz
Samsuzzaman Afroz
12:15 - 12:35
Room: Saha and Sarabhai Auditoriums

12:35 Lunch
Lunch
12:35 - 14:00
Room: Saha and Sarabhai Auditoriums

14:00 21-cm cosmology - the global signal perspective: Mayuri Rao
Mayuri Rao
14:00 - 14:30
Room: Saha and Sarabhai Auditoriums

14:30 Primordial gravitational waves: Debika Chowdhury
Debika Chowdhury
14:30 - 15:00
Room: Saha and Sarabhai Auditoriums

15:00 Production of Gravitational Waves from Preheating and Tachyonic Instabilities: Khursid Alam
Khursid Alam
15:00 - 15:20
Room: Saha and Sarabhai Auditoriums

15:20 Coffee Break
Coffee Break
15:20 - 16:00
Room: Saha and Sarabhai Auditoriums

16:00 Primordial magnetism in the light of cosmic dawn and post-EoR observables: Arko Bhaumik
Arko Bhaumik
16:00 - 16:20
Room: Saha and Sarabhai Auditoriums

16:20 Gravitational Wave Signature and the Nature of Neutrino Masses: Majorana, Dirac, or Pseudo-Dirac?: Sudip Manna
Sudip Manna
16:20 - 16:40
Room: Saha and Sarabhai Auditoriums

16:40 Role of Next Generation Cosmological Surveys in Identifying Primordial Features: Debabrata Chandra
Debabrata Chandra
16:40 - 17:00
Room: Saha and Sarabhai Auditoriums

19:00 Dinner
Dinner
19:00 - 20:00
Room: Saha and Sarabhai Auditoriums
Tuesday 20 January 2026

09:30 Entanglement and correlations between local observables in de Sitter spacetime: Ivan Agullo
Ivan Agullo
09:30 - 10:15
Room: Saha and Sarabhai Auditoriums

10:15 The High-redshift Universe in the Era of JWST and 21 cm Cosmology: Tirthankar Roy Choudhury
Tirthankar Roy Choudhury
10:15 - 11:00
Room: Saha and Sarabhai Auditoriums

11:00 Coffee Break
Coffee Break
11:00 - 11:30
Room: Saha and Sarabhai Auditoriums

11:30 Charting the unobservable -- The early-universe as an open quantum system: Suddhasattwa Brahma
Suddhasattwa Brahma
11:30 - 12:00
Room: Saha and Sarabhai Auditoriums

12:00 TBA: Koushik Dutta
Koushik Dutta
12:00 - 12:30
Room: Saha and Sarabhai Auditoriums

12:30 Lunch
Lunch
12:30 - 14:00
Room: Saha and Sarabhai Auditoriums

14:00 TBA: Sergio Palomares-Ruiz
Sergio Palomares-Ruiz
14:00 - 14:45
Room: Saha and Sarabhai Auditoriums

14:45 Gravitational wave background from primordial magnetic field: Ramkishor Sharma
Ramkishor Sharma
14:45 - 15:15
Room: Saha and Sarabhai Auditoriums

15:15 Probing Extended Mass Distributions of Primordial Black Holes in NANOGrav and LVK: Nilanjandev Bhaumik
Nilanjandev Bhaumik
15:15 - 15:35
Room: Saha and Sarabhai Auditoriums

15:35 Coffee Break
Coffee Break
15:35 - 16:00
Room: Saha and Sarabhai Auditoriums

16:00 Dark matters are completely dark, or WIMPy, or FIMPy : An Inflationary gravitational particle production: Ayan Chakraborty
Ayan Chakraborty
16:00 - 16:20
Room: Saha and Sarabhai Auditoriums

16:20 Implications of self-interactions of ultralight dark matter at galactic scales: Bihag Dave
Bihag Dave
16:20 - 16:40
Room: Saha and Sarabhai Auditoriums

16:40 Loops in Cosmological Correlators: Supritha Bhowmick
Supritha Bhowmick
16:40 - 17:00
Room: Saha and Sarabhai Auditoriums

19:00 Dinner
Dinner
19:00 - 20:00
Room: Saha and Sarabhai Auditoriums
Wednesday 21 January 2026

09:30 Warm and Noisy Cosmological Fields: Mustafa Amin
Mustafa Amin
09:30 - 10:15
Room: Saha and Sarabhai Auditoriums

10:15 TBA: Jinn-Ouk Gong
Jinn-Ouk Gong
10:15 - 11:00
Room: Saha and Sarabhai Auditoriums

11:00 Coffee Break
Coffee Break
11:00 - 11:30
Room: Saha and Sarabhai Auditoriums

11:30 Understanding the Universe with the cosmic microwave background: Rishi Khatri
Rishi Khatri
11:30 - 12:00
Room: Saha and Sarabhai Auditoriums

12:00 Using the early universe as a quantum laboratory: Patrick Peter
Patrick Peter
12:00 - 12:30
Room: Saha and Sarabhai Auditoriums

12:30 Lunch
Lunch
12:30 - 14:00
Room: Saha and Sarabhai Auditoriums

14:00 Reconstructing primordial features on large scales using machine learning: Alipriyo Hoory
Alipriyo Hoory
14:00 - 14:20
Room: Saha and Sarabhai Auditoriums

14:20 Primordial Magnetogenesis as a Unified Origin of PBHs, Dark Matter, and Gravitational Waves: Subhasis Maiti
Subhasis Maiti
14:20 - 14:40
Room: Saha and Sarabhai Auditoriums

14:40 Asymmetries from Primordial Black Holes: Kousik Loho
Kousik Loho
14:40 - 15:00
Room: Saha and Sarabhai Auditoriums

15:00 Capturing the 21-cm signal in radio interferometers: Khandakar Md Asif Elahi
Khandakar Md Asif Elahi
15:00 - 15:20
Room: Saha and Sarabhai Auditoriums

15:20 Coffee Break
Coffee Break
15:20 - 16:30
Room: Saha and Sarabhai Auditoriums

16:30 Chandrasekhar Lecture: Current and Future Prospects for the CMB-- Joseph Silk
Current and Future Prospects for the CMB-- Joseph Silk
16:30 - 18:00
Room: HSB 209, Seminar hall

19:00 Dinner
Dinner
19:00 - 20:00
Room: Department of Physics
Thursday 22 January 2026

09:30 Cosmic Hum of Gravitational Waves from the Early Universe: Suvodip Mukherjee
Suvodip Mukherjee
09:30 - 10:15
Room: Saha and Sarabhai Auditoriums

10:15 TBA: Nicola Bartolo
Nicola Bartolo
10:15 - 11:00
Room: Saha and Sarabhai Auditoriums

11:00 Coffee Break
Coffee Break
11:00 - 11:30
Room: Saha and Sarabhai Auditoriums

11:30 TBA: Mayukh Raj Gangopadhyay
Mayukh Raj Gangopadhyay
11:30 - 12:00
Room: Saha and Sarabhai Auditoriums

12:00 TBA: Diptimoy Ghosh
Diptimoy Ghosh
12:00 - 12:30
Room: Saha and Sarabhai Auditoriums

12:30 Lunch
Lunch
12:30 - 14:00
Room: Saha and Sarabhai Auditoriums

14:00 Warm Inflation: Suratna Das
Suratna Das
14:00 - 14:30
Room: Saha and Sarabhai Auditoriums

14:30 Cosmological Dynamics of Scalar Fields in String-Motivated Models: Ivonne Zavala
Ivonne Zavala
14:30 - 15:00
Room: Saha and Sarabhai Auditoriums

15:00 TBA: Debottam Nandi
Debottam Nandi
15:00 - 15:20
Room: Saha and Sarabhai Auditoriums

15:20 Coffee Break
Coffee Break
15:20 - 16:00
Room: Saha and Sarabhai Auditoriums

16:00 Power Suppression and Lensing Anomaly - A phenomenological investigation: Roshna K
Roshna K
16:00 - 16:20
Room: Saha and Sarabhai Auditoriums

16:20 Constraining the early universe with NANOGrav 15-year data: Suvashis Maity
Suvashis Maity
16:20 - 16:40
Room: Saha and Sarabhai Auditoriums

16:40 Anomalies and tensions in cosmology: Purba Mukherjee
Purba Mukherjee
16:40 - 17:00
Room: Saha and Sarabhai Auditoriums

19:00 Dinner
Dinner
19:00 - 20:00
Room: Saha and Sarabhai Auditoriums
Friday 23 January 2026

09:30 Gauge fields and parity violation in the early universe: Rajeev Jain
Rajeev Jain
09:30 - 10:15
Room: Saha and Sarabhai Auditoriums

10:15 TBA: Jerome Martin
Jerome Martin
10:15 - 11:00
Room: Saha and Sarabhai Auditoriums

11:00 Coffee Break
Coffee Break
11:00 - 11:30
Room: Saha and Sarabhai Auditoriums

11:30 Bayesian optimisation for efficient cosmological model selection: Ameek Malhotra
Ameek Malhotra
11:30 - 11:50
Room: Saha and Sarabhai Auditoriums

11:50 The importance of being warm in the Early Universe: Dibya Chakraborty
Dibya Chakraborty
11:50 - 12:10
Room: Saha and Sarabhai Auditoriums

12:10 AI/ML Techniques for Model-Independent Cosmological Analysis: Rahul Shah
Rahul Shah
12:10 - 12:30
Room: Saha and Sarabhai Auditoriums

12:30 Lunch
Lunch
12:30 - 14:00
Room: Saha and Sarabhai Auditoriums

14:00 Anchoring The Universe at Characteristic Redshifts and Measurement of the Hubble Parameter.: Anjan Ananda Sen
Anjan Ananda Sen
14:00 - 14:30
Room: Saha and Sarabhai Auditoriums

14:30 Validity of separate-universe approach in transient ultraslow-roll inflation: Rathul Nath Raveendran
Rathul Nath Raveendran
14:30 - 14:50
Room: Saha and Sarabhai Auditoriums

14:50 Non-minimal coupling of scalar fields in the dark sector and generalization of the top-hat collapse: Priyanka Saha
Priyanka Saha
14:50 - 15:10
Room: Saha and Sarabhai Auditoriums

15:10 Inflationary trispectrum of gauge fields from scalar and tensor exchanges: Jishnu Sai
Jishnu Sai
15:10 - 15:30
Room: Saha and Sarabhai Auditoriums

15:30 Emergence of the exponential cut-off in the spectrum of PGWs at small scales: Arnab Paul
Arnab Paul
15:30 - 15:50
Room: Saha and Sarabhai Auditoriums

15:50 Closing remarks
Closing remarks
15:50 - 16:00
Room: Saha and Sarabhai Auditoriums

16:00 Coffee Break
Coffee Break
16:00 - 16:30
Room: Saha and Sarabhai Auditoriums

19:00 Dinner
Dinner
19:00 - 20:00
Room: Saha and Sarabhai Auditoriums

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