Tomonaga

Tomonaga is a Japanese surname. It is of Japanese origin and can be written with several kanji combinations; as such, the exact characters vary by family. The name is most common in Japan and in Japanese communities abroad.

Notable individuals with this surname include Sin-Itiro Tomonaga (1906–1979), a Japanese theoretical physicist who shared the Nobel Prize in Physics in 1965 for fundamental work in quantum electrodynamics (QED). His contributions helped establish a consistent framework for quantum field theory, including methods to handle infinities that arise in calculations. The Tomonaga–Luttinger model (also known as the Tomonaga–Luttinger liquid) is named after him and physicist J. M. Luttinger. It describes interacting electrons in one dimension and is a cornerstone of the theory of strongly correlated systems.