1, phase transition theory In this paper, the analytical properties of giant partition function are studied by analytical continuation method, and it is found that the distribution of its roots determines the state equation and phase transition properties, which eliminates the suspicion that there are different thermodynamic phases under the same interaction.

2. Yang-Baxter equation, 1967. Yang Zhenning found that the fermion quantum many-body problem in the repulsive potential 1 dimensional δ function can be transformed into a matrix equation.

3. Theoretical explanation of superconducting magnetic ionization, 196 1 year. Through close communication with Fei Zhengqing experimental group, Yang Zhenning and byers explained theoretically the superconducting magnetic ionization discovered by the experimental group, proved that electron pairing can lead to the observed phenomenon, clarified the basic principle that it is unnecessary to introduce new electromagnetic fields, and corrected the mistake of London reasoning.

Personality influence:

1On May 25th, 997, China Academy of Sciences and Jiangsu Provincial People's Government announced that the International Asteroid Center discovered the Purple Mountain Observatory of China Academy of Sciences at 10/975165438+on October 26th, and the asteroid with the international number of 342 1 was officially named as.

1999 In May, the State University of New York at Stony Brook named the Institute of Theoretical Physics "Yang Zhenning Institute of Theoretical Physics".

On April 2 1 2004, Tsinghua University established "Yang Zhenning Lecture Fund" and invited internationally renowned professors and outstanding young scholars to Tsinghua University Advanced Research Center to devote themselves to scientific research.