1, phase transition theory, a theory to explain various phase transition phenomena of matter. Phase transition is sometimes abrupt and sometimes stable, and many abnormal phenomena, such as infinite increase of specific heat, will occur at the critical point between them. This phenomenon is called critical phenomenon and is one of the important topics in phase transition theory research.
2. Many-body problem of boson. According to Bose Einstein's statistics, a boson is a particle with an integer spin. Bosons do not obey Pauli exclusion principle, and Bose-Einstein condensation can occur at low temperature.
3. Charge yoke and parity. In physics, the parity of charge * * * yoke is the multiplied quantum number of particles, which is used to describe the behavior of some particles under the symmetrical operation of charge * * * yoke.
4. Yang Zhenning, male, born in Hefei, Anhui Province in June19221kloc-0/,is a physicist, professor Bowen of the Chinese University of Hong Kong and director of the Institute of Theoretical Physics, honorary dean and professor of the Institute of Advanced Studies of Tsinghua University, honorary professor of the State University of New York at Stony Brook, and academician of the China Academy of Sciences.