Physics - Astronomy

Built 1963. Albert Kahn Associates, architects. On verso: University of Michigan News Service; 3528 Administration Bldg.; Ann Arbor, Michigan 48104; Negative Number 3413

Physics - Astronomy Bldg. [Building]

Built 1963. Albert Kahn Associates, architects. On verso: University of Michigan News Service; 3528 Administration Bldg.; Ann Arbor, Michigan 48104. Ann Arbor Chamber of Commerce

Randall Physics Laboratory

Albert Kahn, architect. Built 1924. East University on site of old medical building which was razed in 1914. Also called New Physics and East Physics. Photographer's stamp on verso.

Summaries of physical research in physics and mathematics.

"May 1959."

Visit of U.S. high-energy physics team to USSR, May 1960 /

Cover title.

Fundamentals of junction transistor physics /

"August 30, 1955"

Problems of physics in the ion source /

"The Y-12 Plant of the Clinton Engineer Works was operated by the Tennessee Eastman Corporation under Contract No. W-7401-eng-23 from Januaury 1943 until May 4, 1947, at which time operations were taken over by Carbide and Carbon Chemicals Corporation for the U.S. Atomic Energy Commission under Contract No. W-7405-eng-26"--Page 2 of cover.

Transition amplitude for two-time physics

We present the transition amplitude for a particle moving in a space with two times and D space dimensions having an Sp(2, R) local symmetry and an SO(D, 2) rigid symmetry. It was obtained from the BRST-BFV quantization with a unique gauge choice. We show that by constraining the initial and final points of this amplitude to lie on some hypersurface of the D + 2 space the resulting amplitude reproduces well-known systems in lower dimensions. This work provides an alternative way to derive the effects of two-time physics where all the results come from a single transition amplitude.

Reverse engineering in many-body quantum physics: Correspondence between many-body systems and effective single-particle equations

The mapping, exact or approximate, of a many-body problem onto an effective single-body problem is one of the most widely used conceptual and computational tools of physics. Here, we propose and investigate the inverse map of effective approximate single-particle equations onto the corresponding many-particle system. This approach allows us to understand which interacting system a given single-particle approximation is actually describing, and how far this is from the original physical many-body system. We illustrate the resulting reverse engineering process by means of the Kohn-Sham equations of density-functional theory. In this application, our procedure sheds light on the nonlocality of the density-potential mapping of density-functional theory, and on the self-interaction error inherent in approximate density functionals.

Do economists ‘compose’ economics? A comparison of the creative processes of artists and economists

This is a draft for a chapter of the book version of my Ph.D thesis. The chapter addresses the following question: Are the creative processes of musical composers and academic economists essentially the same, or are there significant differences? The paper finds that there are deep similarities between the creative processes of theoretical economists and the creative processes of artists. The chapter builds a process oriented lifecycle account of creative activity, drawing on testimonial material from the arts and the sciences, and relates the model to the creative work of economists developing economic theory.