Ashu kushwaha - Presentations

This page outlines the details of my participation in various research activities, including conferences, visits to other groups, and presentations of seminars and talks.

Research visits (Talks/Seminar)

10-18 Oct, 2026: Visit to Instituto de Física Teórica (IFT), Madrid, Spain; Host: Prof. Juan Garcia-Bellido and Dr. Sachiko Kuroyanagi; seminar talk on 13 Oct, Title: Probing Early Universe with Primordial Black Holes
2-10 Oct, 2026: Visit to Max Planck Institute for Astrophysics, Garching, Germany; Host: Prof. Eiichiro Komatsu; seminar talk on 6th October; Title: Cosmological Constraints on Chiral High-Frequency Gravitational Wave Background
22 Sept- 2 Oct, 2026: Visit to Astroparticle Physics Group at University of Hamburg, Germany; Host: Prof. Dieter Horns.
1-21 Sept, 2026: Visit to Nordita, Stockholm University, Sweden; Host: Prof. Axel Brandenburg, Seminar Talk on 14th Sept, Title: Constraints on small-scale PMF from Primordial Black Holes.
14-21 Feb, 2026: Visit to Prof. Vincent Vennin at the Physics department of Ecole Normale Supérieure (LPENS, Paris); seminar on 19 Feb, Title: Cosmological Constraints on Chiral Gravitational Wave Background
1-14 Feb, 2026: Visit to Prof. Valerie Domcke at CERN Theory group, Geneva, Switzerland.
31st March - 14th April, 2023: Visit to Prof. Shinji Mukohyama at Yukawa Institute for Theoretical Physics, Kyoto University, Japan; seminar talk on 6 April, Title: An effective field theory approach to understand the primordial magnetogenesis.
10th April, 2023: One-day visit to Prof. Teruaki Suyama, Tokyo Institute of Technology, Tokyo, Japan
August 20, 2025; Talk on "Constraining circular polarization of high-frequency gravitational waves with CMB" in Joint Seminar hosted at the Department of Physics, Institute of Science Tokyo, Japan.
May 16, 2025; Talk on "Probing polarization of high-Frequency GWs from CMB experiments" at the Department of Physics, Institute of Science Tokyo, Japan.
April 3, 2024; Talk on "Gertsenshtein-Zel’dovich effect: A plausible explanation for fast radio bursts?" at Department of Physics, Indian Institute of Science Bangalore, India.
April 6, 2023; Seminar talk on "An effective field theory approach to understand the primordial magnetogenesis" at Yukawa Institute for Theoretical Physics, Kyoto University, Japan.
April 17, 2021; Invited talk on "Helical magnetic fields lead to baryogenesis" in the cosmology group at IIT Madras. (Virtual)

Invited Talks/Seminar

June 30, 2026; Theoretical Physics Colloquium talk on "Probing the primordial curvature power spectrum from primordial black holes" at Rikkoy University (Ikebukuro campus), Tokyo, Japan.

Conference presentations

I have listed below, in reverse chronological order, recent and past events (conference presentations, etc), I have participated in.

March 12, 2026; An upper limit on cosmological chiral gravitational wave background" in "Gravitational Waves and the Early Universe: Accelerated Expansion, Dynamical Inhomogeneity, and Beyond" at Kobayashi-Maskawa Institute for the Origin of Particles and the Universe (KMI), Nagoya University (March 12-14, 2026)
January 20, 2026; Excursion Set Approach to Primordial Black Holes, in parallel session in "The 34th Workshop on General Relativity and Gravitation (JGRG-34)", Yukawa Institute for Theoretical Physics, Kyoto University, Japan
November 12, 2025; Circularly polarized radiation from Axion-Photon conversion and CMB V-mode measurements, in parallel session in "Axions in Japan" at Kavli Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Japan (November 10-14, 2025)
January 2, 2025; Chirality transfer in the photon-graviton conversion in early universe and production of high-frequency GWs, in parallel session in "33rd Indian Association for General Relativity and Gravitation (IAGRG)" at Birla Institute of Technology And Science (BITS) Pilani, Pilani Campus, India (January 02-04, 2025).
January 19, 2024; Maximal chirality transfer in the photon-graviton conversion in the early universe, Second Neighbourhood Cosmology Meeting on Dec 19 at Indian Institute of Science (IISc) Bangalore.
December 6, 2023; Oral presentation titled An effective field theory approach to understand the primordial magnetogenesis, in parallel session in “10th International Conference on Gravitation and Cosmology (ICGC)” at Indian Institute of Technology (IIT) Guwahati, India (December 6-9, 2023)
March 29, 2023; Talk on "Gertsenshtein-Zel’dovich effect: A plausible explanation for fast radio bursts?" at "International Conference on the Physics of the Two Infinities" at Kyoto University, Japan.
March 2023; Talk on "Gertsenshtein-Zel’dovich effect: A plausible explanation for fast radio bursts?" at "41st Annual Meeting of the Astronomical Society of India (ASI)" at IIT Indore.
Dec 19, 2022; Talk on "Gertsenshtein-Zel’dovich effect: A plausible explanation for fast radio bursts?" at 32nd meeting of Indian Association for General Relativity and Gravitation (IAGRG32), IISER Kolkata.
July 7, 2022; Talk on "A viable model to explain the Fast radio burst using the Gertsenshtein-Zel'dovich effect" at 23rd International Conference on General Relativity and Gravitation, China (GR-23). (Virtual)
July 5, 2022; Contributed talk on "Helical magnetic fields lead to baryogenesis" at Summer School on Cosmology 2022 at International Centre for Theoretical Physics (ICTP), Trieste, Italy.
March 25 - 29, 2022; Poster presentation in "40th Annual Meeting of the Astronomical Society of India (ASI)" at IIT Roorkee.
July 6, 2021; Talk on "Helical magnetic fields lead to baryogenesis" in Sixteenth Marcel Grossmann Meeting Conference (MG-16). (Virtual)
March 29 - April 2, 2021; Talk on "Helical magnetic fields from Riemann coupling" in Beyond Standard Model: From Theory to Experiment (BSM- 2021) organized by The Center for Fundamental Physics (CFP) at Zewail City of Science and Technology and Faculty of Engineering and Natural Sciences at Sabancı University. (Virtual)
Feb 18-23, 2021; Poster presentation in "39th Annual Meeting of the Astronomical Society of India (ASI)". (Virtual)
Dec 14-18, 2020; Talk on "Helical magnetic fields from Riemann coupling" in XXIV DAE-BRNS HIGH ENERGY PHYSICS SYMPOSIUM 2020, NISER, Odisha. (Virtual)
Oct 17-18, 2020; Talk on "Helical magnetic fields from Riemann coupling" in SYMPHY 2020 at Department of Physics, IIT Bombay. (Virtual)
June 22-26 2020; Poster presentation in CERN virtual workshop "Zooming in on Axions in the Early Universe". (Virtual)
Feb 13-17, 2020; Poster presentation in "38th Annual Meeting of the Astronomical Society of India (ASI)", at IISER Tirupati.

Poster presentations

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This page outlines the details of my participation in various research activities, including conferences, visits to other groups, and presentations of seminars and talks.

Research visits (Talks/Seminar)

Invited Talks/Seminar

Conference presentations

Get in touch at [ashukushwaha712@gmail.com] , [kushwaha.a.ce1b@m.isct.ac.jp] Last updated: October 18, 2026