The discussion revolves around the search for literature on computational quantum electrodynamics (QED), particularly in comparison to existing resources for quantum chromodynamics (QCD). Participants explore the applicability of perturbative methods in QED and their relevance to many-body problems.
Participants do not reach a consensus on the necessity or efficiency of computational methods in QED, indicating that multiple competing views remain regarding their applicability and practicality.
Limitations include the lack of clarity on specific definitions of efficiency and necessity, as well as the unresolved nature of the applicability of perturbative methods to various many-body problems.
In QED, it seems that all measurable effects can be well described by the good old perturbative methods, meaning that there is no practical need for something like that. But I could be wrong.jonjacson said:I am looking for something similar to this one:
https://www.amazon.com/dp/3319533355/?tag=pfamazon01-20
But this is for QCD, I want the same for QED.
Demystifier said:In QED, it seems that all measurable effects can be well described by the good old perturbative methods, meaning that there is no practical need for something like that. But I could be wrong.
If you mean for strongly-correlated systems such as high-Tc superconductivity, I would say that they can be used in principle, but that in practice they are not very efficient.jonjacson said:And do you know if those methods can be used for many body problems?
Demystifier said:If you mean for strongly-correlated systems such as high-Tc superconductivity, I would say that they can be used in principle, but that in practice they are not very efficient.