331 citations
- Kiryu UniversityJP36 papers
- Ibaraki UniversityJP30 papers
- Kyoto UniversityJP29 papers
- The University of TokyoJP27 papers
- Nagoya UniversityJP23 papers
- The University of OsakaJP21 papers
- Tokyo Institute of TechnologyJP17 papers
- Chapman UniversityUS16 papers
- National Astronomical Observatory of JapanJP16 papers
- Niigata UniversityJP16 papers
- Japan Science and Technology AgencyJP14 papers
- Osaka City UniversityJP14 papers
Showing 2020 · math-phShow all
2 papers · 2 filters
math-ph2020
The first order expansion of a ground state energy of the model with cutoffs
Toshimitsu Takaesu
In this paper, we investigate the model with cutoffs. By introducing a spatial cutoff and a momentum cutoff, the total Hamiltonian is a self-adjoint operator on a boson Fock…
math-ph2020★ 3 cited
An operator-theoretical study of the specific heat and the critical magnetic field in the BCS-Bogoliubov model of superconductivity
Shuji Watanabe
In the preceding paper, introducing a cutoff, the present author gave a proof of the statement that the transition to a superconducting state is a second-order phase transition in…