In summary, James Hartle, a renowned physicist known for his work in quantum cosmology, has passed away. He was the author of a popular textbook on general relativity and gave talks on the subject at various conferences and events. He also had a significant impact on the field of quantum mechanics, as seen through his numerous publications and contributions to the academic community. His legacy will continue to live on through his work and teachings.
Jim Hartle Grand Finale 20190607 549 (from his 80th birthday party for him at the KITP at UC Santa Barbara 6/7/2019) James Hartle - What is Quantum Cosmology? (2020)
The impact of cosmology on quantum mechanics (J. Hartle) - 2021 James Hartle - Quantum Mechanics and Cosmology (QM90) - 2017
James Hartle - The bubble multiverses of the no-boundary quantum state
(Talk at Stephen Hawking 75th Birthday Conference on Gravity and Black Holes held at Centre for Theoretical Cosmology, Cambridge, July 2-5, 2017.)
Quantum Gravity and Quantum Cosmology (APS April Meeting 2015 plenary session III.)