Rapid Reaction Task Force: The systematic treatment of the Coulomb interaction in few-body systems - Part I

Topics: 1. Many techniques are used to include Coulomb in 3-particle systems: coordinate and momentum space methods; perturbative and nonperturbative, etc. *What are their advantages and disadvantages?* 2. *At which order does a charge-dependent 3N interaction enter?* 3. *For which observables is non-perturbative Coulomb essential, and where not? Does that influence the answers to 1 and 2?* 4. *What issues arise from and can be assessed by regulator-dependence?* 5. *Which questions of fundamental importance to Nuclear Physics can be addressed when we know the answer to these questions, also for A>3?* How does this inspire new treatments of chiral EFT (with pions)?