@article{oai:kanazawa-u.repo.nii.ac.jp:00011095,
 author = {一瀬, 孝 and Ichinose, Takashi and Tamura, Hideo},
 journal = {Journal fur die Reine und Angewandte Mathematik},
 month = {Mar},
 note = {We know by the studies for the last decade that the norm convergence of the exponential product formula holds true even for a class of unbounded operators. As a natural development of this recent research, we study how the product formula approximates integral kernels of Schrödinger semigroups. Our emphasis is placed on the case of singular potentials. The Dirichlet Laplacian is regarded as a special case of Schrödinger operators with singular potentials. We also discuss the approximation to the heat kernel generated by the Dirichlet Laplacian through the product formula. © Walter de Gruyter., 金沢大学大学院自然科学研究科},
 pages = {157--188},
 title = {Exponential product approximation to the integral kernel of the Schrödinger semigroup and to the heat kernel of the Dirichlet Laplacian},
 volume = {592},
 year = {2006}
}