Stanford University
Showing 2,661-2,680 of 6,412 Results
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Shamit Kachru
Professor of Physics and Director, Stanford Institute for Theoretical Physics, Emeritus
Current Research and Scholarly InterestsMy current research is focused in three directions:
— Mathematical aspects of string theory (with a focus on BPS state counts, black holes, and moonshine)
— Quantum field theory approaches to condensed matter physics (with a focus on physics of non-Fermi liquids)
— Theoretical biology, with a focus on evolution and ecology -
Michael Kahan
Senior Lecturer of Sociology
Current Research and Scholarly Interests19th and 20th Century Urban and Social History; Street Life; Urban Space
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Colin Kahl
Director, Freeman Spogli Institute for International Studies, Senior Fellow at the Freeman Spogli Institute for International Studies, and Professor, by courtesy, of Political Science
BioColin Kahl is the Steven C. Házy Senior Fellow at Stanford University’s Center for International Security and Cooperation (CISAC), an interdisciplinary research hub in the Freeman Spogli Institute for International Studies. He is also the faculty director of CISAC’s Program on Geopolitics, Technology, and Governance, and a professor of political science (by courtesy).
From April 2021-July 2023, Dr. Kahl served as the Under Secretary of Defense for Policy at the U.S. Department of Defense. In that role, he was the principal adviser to the Secretary of Defense for all matters related to national security and defense policy and represented the Department as a standing member of the National Security Council Deputies’ Committee. He oversaw the writing of the 2022 National Defense Strategy, which focused the Pentagon’s efforts on the “pacing challenge” posed by the PRC, and he led the Department’s response to Russia’s invasion of Ukraine and numerous other international crises. He also led several other major defense diplomacy initiatives, including: an unprecedented strengthening of the NATO alliance; the negotiation of the AUKUS agreement with Australia and the United Kingdom; historic defense force posture enhancements in Australia, Japan, and the Philippines; and deepening defense and strategic ties with India. In June 2023, Secretary of Defense Lloyd Austin III awarded Dr. Kahl the Department of Defense Distinguished Public Service Medal, the highest civilian award presented by the Secretary of Defense.
During the Obama Administration, Dr. Kahl served as Deputy Assistant to President Obama and National Security Advisor to the Vice President Biden from October 2014 to January 2017. He also served as Deputy Assistant Secretary of Defense for the Middle East from February 2009 to December 2011, for which he received the Outstanding Public Service Medal in July 2011.
Dr. Kahl is the co-author (along with Thomas Wright) of Aftershocks: Pandemic Politics and the End of the Old International Order (New York: St. Martin’s Press, 2021) and the author States, Scarcity, and Civil Strife in the Developing World (Princeton, NJ: Princeton University Press, 2006). He has also published numerous article on U.S. national security and defense policy in Foreign Affairs, Foreign Policy, International Security, the Los Angeles Times, Middle East Policy, the National Interest, the New Republic, the New York Times, Politico, the Washington Post, and the Washington Quarterly, as well as several reports for the Center for a New American Security (CNAS), a non-partisan think tank in Washington, DC.
Dr. Kahl previously taught at Georgetown University and the University of Minnesota, and he has held fellowship positions at Harvard University, the Council on Foreign Relations, CNAS, and the Penn Biden Center for Diplomacy and International Engagement.
He received his B.A. in political science from the University of Michigan (1993) and his Ph.D. in political science from Columbia University (2000). -
Renata Kallosh
Stanford W. Ascherman, MD Professor, Emerita
BioWhat is the mathematical structure of supergravity/string theory and its relation to cosmology?
Professor Kallosh works on the general structure of supergravity and string theory and their applications to cosmology. Her main interests are related to the models early universe inflation and dark energy in string theory. She develops string theory models explaining the origin of the universe and its current acceleration. With her collaborators, she has recently constructed de Sitter supergravity, which is most suitable for studies of inflation and dark energy and spontaneously broken supersymmetry.
She is analyzing possible consequences of the expected new data from current and future cosmological observations, including LiteBIRD satellite CMB data. These results may affect the relationship between superstring theory and supergravity, and the real world. Professor Kallosh works, in particular, on future tests of string theory by CMB data and effective supergravity models with flexible amplitude of gravitational waves produced during inflation.
