https://doi.org/10.1140/epjp/s13360-023-03989-0
Regular Article
Contact interactions and strong resolvent convergence, a partly variational approach
1
Math Department, University Sapienza Roma, Rome, Italy
2
Mathematics Area, SISSA Trieste, Trieste, Italy
Received:
17
January
2023
Accepted:
12
April
2023
Published online:
8
May
2023
In Dell’Antonio (Eur. Phys. J. Plus 136:392, 2021) we considered several types of contact (zero range) interactions. Their Hamiltonians are limit, in strong resolvent topology, of a sequence of potentials with decreasing support. Here we review and improve these results and provide a new analysis Bose–Einstein condensation and of the Fermi sea.
© The Author(s) 2023
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