Arianna W. Rosenbluth

Arianna Rosenbluth (née Wright) was born on September 15, 1927, in Houston, Texas.

She attended university at the Rice Institute, now Rice University, where she received a Bachelor of Science in 1946. In 1947 she obtained her Master of Arts from Radcliffe College[1] before beginning her PhD in physics at Harvard University under the supervision of Nobel Laureate John Hasbrouck Van Vleck. At the time Van Vleck also supervised the future Nobel Laureate Philip Warren Anderson and the philosopher of science Thomas Kuhn.[2] She completed her thesis, entitled Some Aspects of Paramagnetic Relaxation, in 1949 at the age of 22.[3]

Arianna was an accomplished fencer, winning not only the Texas women's championship in foil but also the Houston men's championship.[4] Her plans to complete in the Olympics were prevented first by the cancellation of the 1944 Summer Olympics and then inability to fund participation in the 1948 summer games.

After completing her thesis Arianna won an Atomic Energy Commission postdoctoral fellowship to Stanford University which she attended before moving to a staff position at Los Alamos National Laboratory where her research focused on atomic bomb development and statistical mechanics.

Along with Marshall Rosenbluth she verified analytic calculations for the Ivy Mike test using the SEAC at the National Bureau of Standards.[5][6] Once the MANIAC I had been completed at Los Alamos she collaborated with Nicholas Metropolis, Marshall N. Rosenbluth, Augusta H. Teller, and Edward Teller to develop the first Markov chain Monte Carlo algorithm, in particular the prototypical Metropolis–Hastings algorithm, in the seminal paper Equation of State Calculations by Fast Computing Machines.[7] She developed the implementation of the algorithm for the MANIAC I hardware, making her the first person to ever implement the Markov chain Monte Carlo method.[5][6][8]

Over the next few years Arianna and Marshall applied the method to novel studies of statistical mechanical systems, including three-dimensional hard spheres and two-dimensional Lennard-Jones molecules and two and three-dimensional molecular chains.[9][10]

After the birth of her first child, Arianna left research to focus on raising her family.

While at Stanford University she met Marshall Rosenbluth and the two married on January 26, 1951.[3] They had four children before divorcing in 1978.

In 1956 she moved from Los Alamos to San Diego, California and then Princeton, New Jersey, before finally settling in the greater Los Angeles area.

Arianna died on December 28, 2020 in the greater Los Angeles, California area.