Abhay Ashtekar | PIRSA

Abhay Ashtekar is the Eberly Professor of Physics and the Director of the Institute for Gravitational Physics and Geometry at the Pennsylvania State University. As the creator of Ashtekar variables, he is one of the founders of loop quantum gravity. He has written a number of descriptions of loop quantum gravity that are accessible to non-physicists.

Talks by Abhay Ashtekar

Q&A/Panel Discussion: Foundations of Loop Quantum Gravity

Abhay Ashtekar - Pennsylvania State University , Bianca Dittrich - Perimeter Institute for Theoretical Physics , Seth Major - Hamilton College , Viqar Husain - University of New Brunswick

June 03, 2025 PIRSA:25060038 Conference
To Lee, with best wishes

Abhay Ashtekar - Pennsylvania State University

June 03, 2025 PIRSA:25060034 Conference
Horizons and Null Infinity: A Fugue in 4 voices

Abhay Ashtekar - Pennsylvania State University

February 14, 2024 PIRSA:24020038 Scientific Series Quantum Gravity
Open Discussion with today's speakers (Ashtekar, Surya, Vieira)

Abhay Ashtekar - Pennsylvania State University , Sumati Surya - Raman Research Institute , Pedro Vieira - Perimeter Institute for Theoretical Physics

October 25, 2023 PIRSA:23100012 Conference Quantum Gravity
Panel Discussion - Cosmological Puzzles (Ashtekar, Brandenberger, Geshnizjani, Sakellariadou, Yazdi)

Abhay Ashtekar - Pennsylvania State University , Robert Brandenberger - McGill University - Department of Physics , Ghazal Geshnizjani - Perimeter Institute for Theoretical Physics , Mairi Sakellariadou - King's College London , Yasaman Kouchekzadeh Yazdi - Dublin Institute For Advanced Studies

October 25, 2023 PIRSA:23100011 Conference Quantum Gravity
Glimpses into Loop Quantum Gravity

Abhay Ashtekar - Pennsylvania State University

October 25, 2023 PIRSA:23100009 Conference Quantum Gravity
A New Perspective on Time Reversal Motivated by Quantum Gravity

Abhay Ashtekar - Pennsylvania State University

June 15, 2021 PIRSA:21060094 Conference Quantum Foundations
Implications of the Quantum Nature Space-time for the Big Bang and Black Holes

Abhay Ashtekar - Pennsylvania State University

November 19, 2019 PIRSA:19110090 Conference Cosmology Quantum Fields and Strings Quantum Gravity
Bounce in Loop Quantum Cosmology and its Implications

Abhay Ashtekar - Pennsylvania State University

June 26, 2017 PIRSA:17060095 Conference Cosmology
The BMS group, conservation laws and soft gravitons

Abhay Ashtekar - Pennsylvania State University

August 11, 2016 PIRSA:16080055 Scientific Series Quantum Gravity
The fate of the big bang

Abhay Ashtekar - Pennsylvania State University , Neil Turok - University of Edinburgh

June 28, 2016 PIRSA:16060112 Conference Cosmology
Even a tiny positive cosmological constant casts a long shadow

Abhay Ashtekar - Pennsylvania State University

May 01, 2015 PIRSA:15050135 Conference Quantum Fields and Strings