Brown University

In this Oral History, Prof. Roger Tanner (University of Sydney) discusses his life and career in rheology with Gareth McKinley. Starting with discussion of his time growing up in England and working at the Bristol Aeroplane Company, attending Bristol University and then going to UC Berkeley on a King George VI Memorial Fellowship for a Master’s degree in control engineering. He describes the development of his interest in lubrication flows in bearings and first exposure to rheology through Frank Leslie and Arthur Lodge during his doctoral studies in Manchester, UK. He discusses in depth his work in Manchester, University of Sydney and Brown University as well as sabbaticals at the Rheology Research Center in Wisconsin and at the University of Delaware and time in academic administration as Pro-Vice Chancellor of Research. The historical development of the Australian Society of Rheology (ASR) is outlined as well as organization of the quadrennial International Congress of Rheology in Sydney (1988). He explains his first exposure to computational finite element schemes for analysis of viscoelastic die swell with Bob Nickell at Brown as well as his long-standing interests in simulating viscoelastic flows in complex geometries, constitutive model development (with Nhan Phan-Thien amongst others) and most recently the fluid dynamics of particulate suspensions with viscoelastic matrices. 

n this interview, Stephon Alexander discusses current research into quantum gravity and possible extensions to string theory; work to merge quantum mechanics and general relativity; research into the connection between music and cognitive science; experience as a jazz musician; intersections of philosophy and physics; experience as president of the National Society of Black Physicists (NSBP); challenges and stigmas associated with being a Black academic; growing up in both rural Trinidad and the Bronx; undergraduate experience at Haverford; graduate work at Brown; guidance from Robert Brandenberger into the field of quantum gravity, applying particle physics to astrophysics and cosmology; thesis research on solitons and topological defects and its role in string cosmology and theory; decision to take postdoc at Imperial College London focusing on M-theory and integrating string theory with cosmic inflation; influence of Alan Guth; work on D-brane driven inflation; experience in the underground London music scene; decision to go to SLAC in Stanford and work under Michael Peskin; loop quantum gravity; time as faculty at Penn State; the role and responsibility of the Black academic; recruitment by Brown University; intellectual influence of David Finkelstein; the process of becoming president of NSBP. Toward the end of the interview, Alexander reflects on his books, The Jazz of Physics and Fear of a Black Universe; being an outsider in the field of physics; and revisits his current work on quantum gravity. He emphasizes the importance of in-person collaboration and improvisation. 

In this interview, Junko Shigemitsu, Professor Emerita in the Department of Physics at the Ohio State University, surveys the field of lattice gauge theory over the course of her career, and she recounts her childhood moving around the world because her father was a diplomat for Japan’s foreign ministry. She explains the circumstances that led her family back to Japan, and her decision to pursue a degree in physics at Sophia University in Tokyo. Shigemitsu discusses her interest in attending Cornell for graduate school, where she studied under the direction John Kogut. She discusses Ken Wilson’s revolutionary work on renormalization, and her thesis work on QCD. Shigemitsu describes her postdoctoral work at the Institute for Advanced Study at a time when lattice gauge theory was beginning to mature, and she discusses her subsequent postdoctoral position at Brown. She explains that opportunities that led to her faculty position at Ohio State and her subsequent research on QCD at non-zero temperatures. Shigemitsu discusses the international HPQCD collaboration and more recent advances in understanding subatomic particles in partnership with SLAC and KEK in Japan. She places the greatest excitement in finding physics beyond the Standard Model in the period starting in 2009, and she explains the increasing utility of computers as their power has grown over the decades. At the end of the interview, Shigemitsu conveys her excitement that the field will yield new discoveries, perhaps including new physics, and that quantum computing will likely be central to these prospects. 

Interview with Mark Trodden, Fay R. and Eugene L. Langberg Professor of Physics, and Co-Director of the Center for Particle Cosmology at the University of Pennsylvania. Trodden describes the overlap between astronomy, astrophysics, and cosmology, and he recounts his working-class upbringing in England. He discusses his undergraduate education at Cambridge, where he focused on mathematics, and he explains his decision to switch to physics for graduate school at Brown, where he worked under the direction of Robert Brandenberger. Trodden describes the impact of the COBE program during this time, and he discusses his work on the microphysics of cosmic strings and topological defects and their effect on baryon asymmetry. He explains his decision to return to Cambridge for his postdoctoral research with Anne Davis and his subsequent postdoctoral appointment at MIT to work with Alan Guth. Trodden discusses his next postdoctoral position at Case Western, which he describes as a tremendously productive period, and he discusses the opportunities that led to his first faculty position at Syracuse. He notes the excellent graduate students he worked with at Syracuse, and he explains what is known and not known with regard to the discovery of the accelerating universe. Trodden describes why the theory of cosmic inflation remains outside the bounds of experimental verification, and he explains the decisions that led to his decision to join the faculty at Penn and his subsequent appointment as chair of the department. He discusses the work that Penn Physics, and STEM in general, needs to do to make diversity and inclusivity more of a top-line agenda, and he describes much of the exciting work his current and former graduate students are involved in. At the end of the interview, Trodden looks to the future and offers ideas on how physicists may ultimately come to understand dark energy and dark matter.

Interview with Michael Kosterlitz, Harrison E. Farnsworth Professor of Physics at Brown University. He recounts his family background in Germany and his upbringing in Aberdeen, Scotland, and he explains that opportunities that led to his undergraduate admission at Cambridge University where he developed his life-long passion for rock climbing. He describes his early interest in high-energy physics and his decision to pursue a graduate degree at Oxford where he worked on the Veneziano and dual resonance models under the direction of John Taylor. Kosterlitz discusses his postdoctoral work first in Torino and then at Birmingham where he met David Thouless and where he developed his initial interest in condensed matter and his subsequent expertise in phase transitions and superfluidity. He explains the revolutionary advances of Ken Wilson’s renormalization group and his decision to go Cornell where he enjoyed a foundational collaboration with David Nelson and Michael Fisher on crossover problems in critical phenomena. Kosterlitz discusses his decision to join the faculty at Brown, and he provides an overview in the advances in superfluidity in the 1970s and 1980s. He discusses the research that was eventually recognized by the Nobel prize committee and the experiments that bore out the theoretical predictions which were an essential prerequisite to the award. Kosterlitz describes the many benefits conferred as a result of winning the Nobel, and he provides perspective on how he has coped with his diagnosis of multiple sclerosis over the years. At the end of the interview, Kosterlitz explains his reluctance to prognosticate on future trends in the field because his experiences have proved to him that one can never know such things and that research breakthroughs are often unforeseen.

Interview with Robert H. Brandenberger, Canada Research Chair and professor of physics at McGill University. Brandenberger recounts his childhood in Switzerland as the son of organic chemists, and he describes his undergraduate education at the ETH Zurich in physics. He discusses his graduate research at Harvard to work under the direction of Arthur Jaffe, and he describes his first exposure to cosmic inflation. Brandenberger describes his postdoctoral appointment at the ITP in Santa Barbara where he worked with Neil Turok and Andreas Albrecht, and his subsequent postdoctoral work with Stephen Hawking at Cambridge. He explains his initial ideas on cosmic strings as an alternative to inflation and his encounters with Cumrun Vafa and Slava Mukhanov. Brandenberger describes the origins of string gas cosmology, its implications for a multiverse and how it was received among string theorists. He discusses his faculty appointment at Brown and he explains his decision to move to McGill where the opportunity to work with graduate students was stronger. Brandenberger surmises what string theory as a testable proposition would look like, and he reflects on some of the obvious philosophical implications of unknowability in the universe. He explains the difference between a toy model and a proper theory, and he conveys optimism that string gas cosmology will advance research on dark energy. At the end of the interview, Brandenberger reflects on the idea that string theory is "smarter than we are."

Interview with Sylvester James Gates, Jr., Ford Foundation Professor of Physics and Director of the Theoretical Physics Center at Brown University. Gates discusses his preparations to lead the APS and the value of his service for PCAST for this new role. Gates recounts his family heritage and he discusses his father’s military service and the death of his mother. He explains how his family navigated racist challenges during his upbringing in El Paso and then in Orlando and how he navigated his own intellectual abilities in school. Gates explains his interest in physics in high school and the opportunities that led to his admission at MIT for his undergraduate work. He recounts the many mentors who made a positive impression on him and he explains his realization that his specialty would be at the boundary between math and physics. Gates describes his earliest interactions with string theory and he explains his decision to remain at MIT for his graduate work to work with Jim Young on supersymmetry. He paints a broader picture of supergravity research at this time and the rising importance of computers for this work. Gates describes his postdoctoral research at Harvard as a Junior Fellow, where he worked closely with Warren Siegel, and he describes his decision to join the faculty at MIT after a subsequent postdoctoral position at Caltech. He addresses Shelly Glashow’s criticism of string theory, and he explains his decision to leave MIT for a faculty position at the University of Maryland. Gates reflects on his teaching and mentoring career at Maryland, he describes his time at Howard University, and he discusses the broader issue of diversity in physics and AIP’s TEAM-UP Report. He describes his more recent interests in graph theory and the broader effort to unify gravity with the other forces. Gates reflects on how he became an advisor to President Obama for PCAST and how he worked with John Holdren to translate reports into policy changes. He explains his decision to go emeritus at Maryland and to take a new position at Brown, and why joining the Watson Institute was an attractive part of the offer. Gates reflects on assuming leadership at APS during the twin crises of Covid and racial strife, he surveys the state of string theory and high energy physics, and he explains why supersymmetry might offer a path to understanding dark matter. At the end of the interview, Jim conveys his hope that his work in math will yield deep insights into nature, and he considers the possibility of pursuing an autobiographical project.

In this interview, David Zierler, Oral Historian for AIP, interviews George Wallerstein, Professor Emeritus at the University of Washington. Wallerstein recounts his childhood in Manhattan and he describes how the atomic attacks on Japan fostered his interest in science as a teenager. He discusses his undergraduate experience at Brown University where he pursued his interests in astronomy and in some of the philosophical underpinnings of physics. Wallerstein describes his graduate work at Caltech, at a time when the Astronomy department was only five years old, and where he focused on the origins of elements in star formation and the spectra of type II Cepheids. Wallerstein discusses his postdoctoral research at Berkeley and subsequent promotion to the faculty there, and he explains the advances made possible with the advent of digital detectors in the mid-1980s which replaced photographic analysis of high-dispersion spectra. He describes the opportunity leading to his tenure at the University of Washington, and he explains the significance of his work on G dwarf stars and the utility of the Hubble Space Telescope to investigate interstellar lines in supernova remnants. At the end of the interview, Wallerstein surveys some of the key advances to which he has contributed over the course of his career, including infrared astronomy and star positioning.

In this interview, David Zierler, Oral Historian for AIP, interviews Walter Massey, chairman of the board of the Giant Magellan Telescope organization. Massey describes his childhood in segregated Mississippi and his academic achievements that led to his admission to Morehouse College from the 10th grade. He describes his developing interest in physics during a formative summer program at Columbia, which convinced him that he could compete at high levels. Massey describes his graduate work at Washington University and how he came to be a student of Eugene Feenberg, who was working on correlated basis functions to many-body physics problems. He discusses his postdoctoral work at Argonne Laboratory and his interest in becoming involved in civil rights issues in the late 1960s, when he became a professor at the University of Illinois. Massey describes his subsequent tenure at Brown, where he focused on mixtures of helium-3 and helium 4 and on the problem of sound dispersion. He discusses the impact of an ACE fellowship which led to his work in the chancellor’s office at UC Santa Cruz, which in turn changed the course of his career trajectory toward policy. Massey describes his tenure at the University of Chicago, his directorship at Argonne, and how he worked through the existential challenge of nuclear energy following the Three Mile Island disaster. He explains his decision to accept an offer to head the National Science Foundation and how he grappled with creating a national science policy in a post-Cold War world. He discusses his work in support of the LIGO project and he explains his decision to lead Morehouse College after a brief appointment with the University of California. Massey reflects on his accomplishment at Morehouse, and he describes the ways the college had changed since his time there as a student. At the end of the interview, Massey discusses his work on the board of Bank of America and for the School of Art Institute of Chicago, and he discusses some of the ongoing challenges and areas of improvement to pursue in promoting diversity in the sciences. 

In this interview, David Zierler, Oral Historian for AIP, interviews Warren Moos, Professor Emeritus in the Department of Physics and Astronomy at Johns Hopkins. Moos recounts his childhood on Long Island, he describes his undergraduate experience at Brown and what it was like to witness major advances in BCS theory. He explains his decision to pursue graduate work in physics at the University of Michigan, where he studied under Dick Sands, who was doing paramagnetic resonance. Moos discusses his postdoctoral work at Stanford with Arthur Schawlow who had hired him to build a lab to study selective excitation of chemical bonds. He describes his early years on the faculty at Johns Hopkins, and he describes the department's leading program in rare earth materials led by Gerhard Dieke. Moos discusses his involvement in satellite launches in the mid-1960s and he explains some of the structural reasons why the U.S. was in a leadership position during the early space race. He discusses the origins of the Space Telescope Science Institute and the related merging of astronomy into the physics department. Moos discusses his contributions to the field of ultraviolet spectroscopy, and its value to space missions. He describes the partnership NASA and Hopkins have maintained over the decades, he describes his tenure on the board of Associated Universities, Inc., and he provides an overview of the European Space Agency and European Southern Observatory. At the end of the interview, Moos reflects on the value of his broad education and research agenda, and he emphasizes the importance of taking on new projects over the course of his career.