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Two-dimensional Sturmian basis set for bound state calculations
(Elsevier, 2019)
Sturmian functions (SF) constitute a very useful spectral tool to deal with bound states or break-up problems in atomic and molecular physics. In their standard form for the three-body case, the radial part of the wave ...
Two-Point Function at Two Loops via Triangle Diagram Insertion
(Physical Soc Japan, 2012-04-01)
In this work we calculate in two different ways a well-known two-point two-loop massless Feynman diagram to illustrate the feasibility of lgluing'' that is, inserting or embedding-simpler diagrams into more complex ones, ...