Geodesic
Locality of Quadratic Forms for Point Perturbations of Schr\"odinger Operators
Matematičeskie zametki, Tome 70 (2001) no. 3, pp. 425-433

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In this paper we study point perturbations of the Schrödinger operators within the framework of Krein's theory of self-adjoint extensions. A locality criterion for quadratic forms is proved for such perturbations. 
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     author = {K. V. Pankrashin},
     title = {Locality of {Quadratic} {Forms} for {Point} {Perturbations} of {Schr\"odinger} {Operators}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {425--433},
     publisher = {mathdoc},
     volume = {70},
     number = {3},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2001_70_3_a9/}
}
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K. V. Pankrashin. Locality of Quadratic Forms for Point Perturbations of Schr\"odinger Operators. Matematičeskie zametki, Tome 70 (2001) no. 3, pp. 425-433. http://geodesic.mathdoc.fr/item/MZM_2001_70_3_a9/