Louis Witten

Louis Witten (born April 13, 1921) is an American theoretical physicist renowned for his contributions to general relativity and classical gravitation, including the discovery of exact electrovacuum solutions to the Einstein field equations. Born in Baltimore, Maryland, to Abraham and Bessie Witten, he earned a Bachelor of Engineering from Johns Hopkins University in 1941, a Bachelor of Science from New York University in 1944, and a PhD in physics from Johns Hopkins in 1951, with a thesis on "A Model of an Imperfect Gas" under advisor Theodore H. Berlin. During World War II, he served as a First Lieutenant in the U.S. Air Force from 1942 to 1946, working in meteorology.

Witten's postdoctoral research took him to Princeton University, the University of Maryland, and MIT's Lincoln Laboratory, followed by a position at the Martin Marietta Corporation's research lab. In 1968, he joined the University of Cincinnati as a professor of physics, serving until his retirement in 1991 as emeritus faculty, where his research focused on gravitational collapse and the quantum nature of black holes. He also held the role of Vice-President and Director of Science Affairs at the Gravity Research Foundation starting in 1968 and was a Fulbright lecturer at the Weizmann Institute of Science in Israel from 1963 to 1964. A fellow of the American Physical Society, Witten is a member of the American Mathematical Society, the International Astronomical Union, and the American Association for the Advancement of Science.

Louis Witten was born on April 13, 1921, in Baltimore, Maryland, to a Jewish family.

His parents, Abraham Witten and Bessie Perman, emigrated from Eastern Europe to the United States as teenagers in 1909 and married in 1916. The family belonged to Baltimore's working-class Jewish immigrant community during the early 20th century, a period when many such families navigated economic challenges while emphasizing resilience and opportunity in their new homeland.

Witten grew up in this urban environment, where the bustling industrial landscape of Baltimore and the cultural vibrancy of its Jewish neighborhoods shaped his formative years prior to formal schooling. Although specific childhood events are not widely documented, the socioeconomic context of his upbringing as the child of recent immigrants likely fostered an early appreciation for education and intellectual pursuits. This foundation transitioned into his enrollment at Johns Hopkins University for undergraduate studies.