Broken symmetry (Physics)

Interviewed by
Alan Lightman
Interview date
Location
Cambridge, Massachusetts
Abstract

More discussion of the reasons why particle physicists began working on cosmology in the 1970s; importance of theoretical work by Kirzhnitz and Linde in 1972 on broken symmetries and phase transitions; current unreality of work on the very early universe; attitude toward the inflationary universe model; successes of the inflationary universe model; aesthetic attraction of a flat universe; acceptability of postulating that we live in a flat universe; introduction to and attitude toward the horizon problem; attitude toward the inflationary universe model; incidences of being worried about scientific problems that no one else is worried about; the anthropic principle and Dirac's large number hypothesis; reaction to de Lapparent, Geller, and Huchra's work on large-scale inhomogeneities; Weinberg worried that perhaps we have misinterpreted the cosmic background radiation; Weinberg's philosophy about strategy in science; the role of consensus in science and the importance of "standard" models; outstanding problems in cosmology: distance scale of the universe, value of the deceleration parameter, origin of structure; failure of theory to explain the observed large-scale structure; possible importance of WIMPs; prematurity of work on the early universe; ideal design of the universe; preference for universes in which initial conditions do not have to be specified; Weinberg's statement in The First Three Minutes about the lack of point to the universe.

Interviewed by
Alan Lightman
Interview date
Location
Cambridge, Massachusetts
Abstract

Awareness in high school of the Sandage Program to observe the rate of expansion of the universe and awareness of the impending operation of the Mt. Palomar telescope; early reading in cosmology; prejudice toward the steady state model in graduate school because of its definite predictions; the reality of cosmology as a legitimate science; Weinberg's early interest in cosmology: influence of Herman Bondi's book; concern in the early 1960s over limited contact between theory and observations; early work in the 1960s on the neutrino version of Olber's Paradox and the possibility of a degenerate sea of neutrinos; preference for an oscillating universe as the next best thing after a steady state universe because you don't have to specify initial conditions; design of an experiment to search for degenerate neutrinos; Weinberg didn't take seriously his own work in cosmology in the 1960s; the importance of the discovery of the cosmic background radiation for making cosmology a legitimate science; the origin of Weinberg's book Gravitation and Cosmology; Weinberg's regret that he spent 1969-1971 working on a textbook when he should have been working on gauge theories in particle physics; history of the application of particle physics to cosmology.

Interviewed by
P. Coleman, P. Chandra and S. Sondhi
Interview date
Abstract

Anderson discusses his interest in Complexity and Physics of Information; the Santa Fe Institute; his doubts about DCS theory of superconductivity and theory of A15s; resonation valence bond ideas; political involvement from local issues to Star Wars defense. Other topics include: ferromagnetism; Ginzburg-Landau theory; Josephson effect; magnetism; military research in the United States; solid state physics; solid state physics in Japan; spin glasses; superconductivity; and spin lattice relaxation.

Interviewed by
P. Coleman, P. Chandra, and S. Sondhi
Interview date
Abstract

Covers the gradual move from Bell Labs to Princeton, at first part time then full; discusses work on spin glass problem and ramifications for optimization theory and neural networks; reaction to Nobel Prize; return to localization and Gang of Four paper; thoughts on mixed valance problem and heavy electron systems.

Interviewed by
P. Chandra, P. Coleman, and S. Sondhi
Interview date
Abstract

Anderson discusses the theory of superfluid Helium-3; recalls germination of the idea and eventual publication of "More is Different"; reviews work on topological defects; discusses motivation for resonation valence bond work with Fazekas; talks about interaction with Lee and Rice on charge density waves; recalls foray into astrophysics with Pines and Alpar and theory of pulsars glitches.

Interviewed by
P. Chandra, P. Coleman and S. Sondhi
Interview dates
October 15, October 29, and November 5, 1999
Abstract

Interview focuses briefly on personal details of Philip Anderson's life and almost exclusively on technical aspects of Anderson's research. After discussing his undergraduate and graduate education at Harvard including his research on spectral lines, he begins the technical aspects of the interview by reviewing his interest in anti-ferromagnetism and his time in Japan. Included in this are his thoughts on the organization of the Japanese scientific community. The second half of the interview deals entirely with his interest in superconductivity and localized moments. Within this general topic there is some treatment of his thoughts on the time that he spent in Cambridge, MA.