Polymer physics is the branch of physics that studies the properties and behavior of polymers, which are large molecules composed of repeating subunits. This field explores the structure, dynamics, and mechanical properties of polymers, as well as their interactions with other materials. Research in polymer physics often involves studying the physical and chemical properties of polymers, understanding how these properties are affected by factors such as temperature and pressure, and developing theoretical models and experimental techniques to describe and predict polymer behavior. Applications of polymer physics can be found in a wide range of industries, including materials science, biomedicine, and engineering.