James Hartle RIP: Remembering a Beloved GR Teacher

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James Hartle, a prominent physicist known for his contributions to general relativity and quantum cosmology, has passed away. His textbook on general relativity has been influential in undergraduate education. The academic community is mourning his loss, with various resources and tributes highlighting his work, including talks and publications on topics such as quantum mechanics and cosmology. Notable events celebrating his legacy include an 80th birthday party and upcoming activities at the Kavli Institute of Theoretical Physics. Despite his passing, Hartle's impact on the field continues to resonate through his extensive body of work and the resources available online.
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James Hartle has died.

A few years ago I had the pleasure of using his text to teach an undergrad GR course.
 
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Here are slides from a talk by Hartle about his textbook from
AAPT Topical Workshop: Teaching General Relativity to Undergraduates, Syracuse University, July 20-21, 2006
https://www.aapt.org/doorway/tgrutalks/hartle/HartleTalk1of5.htm
(See also https://arxiv.org/abs/gr-qc/0506075 )

https://en.wikipedia.org/wiki/James_Hartle
http://web.physics.ucsb.edu/~hartle/
https://arxiv.org/find/gr-qc/1/au:+Hartle/0/1/0/all/0/1

https://academictree.org/physics/tree.php?pid=25570
https://www.genealogy.math.ndsu.nodak.edu/id.php?id=76859



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.)


James Hartle - Einstein's Vision and the Quantum Universe (2015, Fermilab)
VIDEO
https://vms.fnal.gov/asset/detail?recid=1938508&recid=1938508

James Hartle - Einstein's Vision and the Quantum Universe (2004, Perimeter Institute Grand Opening Gala)
VIDEO
https://www2.perimeterinstitute.ca/videos/james-hartle-einsteins-vision-and-quantum-universe

(More from videos from Perimeter:
https://www2.perimeterinstitute.ca/search/node/hartle
https://pirsa.org/speaker/James-Hartle
)
 
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James Burkett Hartle: a Biographical Memoir
Gary T. Horowitz, Kip S. Thorne
https://arxiv.org/abs/2509.14288
James Burkett Hartle was a theoretical physicist who made major contributions to our understanding of relativistic stars, black holes, and cosmology. Most of his career, however, was devoted to studying the universe as a quantum system. As a result, he was known as the father of quantum cosmology. He is best known for two seminal papers with Stephen Hawking that introduced two quantum states of fundamental importance: the "Hartle-Hawking vacuum" for matter fields outside a black hole, and the "no-boundary wave function of the universe" for cosmology. Jim (as everyone called him) was a warm and caring person who was genuinely concerned with the success of his students, postdocs, and colleagues. He was generous with his time and helped to foster a culture of a welcoming family among gravitational physicists.

"This memoir is published in the Biographical Memoir Series of the US National Academy of Sciences. 8 pages"
 
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