What Does CDPT Stand For?

CDPT stands for Constant Denominator Perturbation Theory

Constant Denominator Perturbation Theory (CDPT) is a mathematical framework used in quantum mechanics and other fields to analyze the effects of small perturbations on systems described by a constant denominator. By focusing on the alterations to the denominator of the system's Hamiltonian or energy levels, CDPT simplifies the treatment of interactions, allowing for the derivation of approximate solutions and insights into the behavior of complex systems under perturbative conditions. This approach is particularly valuable in scenarios where standard perturbation techniques may encounter divergences or instabilities.