Abstract
The problem of bound-state poles is investigated for the pion-pion interaction in the framework of the Bethe-Salpeter theory. For vanishing energy and small coupling constant, there are no poles on the physical sheet of the four-dimensional angular momentum plane, whereas there is a pair of poles on the first unphysical sheet.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
