Centre de Physique Théorique


Wednesday 31 January 2018

14h00 – 15h00, CPT, Amphi 5

Quadratic Hamiltonians and their renormalization

Jan Derezinski (Warsaw University, Pologne)


I will sketch general theory of quadratic bosonic Hamiltonians. Then I will describe two examples from QFT: the neutral field with position dependent mass and scalar QED in an external potential. I will show how to renormalize their vacuum energy. I will discuss when they can be interpreted as well defined operators.