Essential self-adjointness of operators in ordered hilbert space |
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Authors: | William G Faris |
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Institution: | (1) Battelle, Advanced Studies Center, Geneva, Switzerland |
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Abstract: | LetH
00 be a self-adjoint operator acting in a spaceL
2(M, ). It is assumed thatH
0
e=0, wheree is strictly positive, and that exp(–tH
0) is positivity preserving fort0. LetV be a real function onM such that its positive part is inL
2(M,e
2) and its negative part is relatively small with respect toH
0. ThenH=H
0+V is essentially self-adjoint on the intersection of the domains ofH
0 andV. This result is applied to Schrödinger operators and to quantum field Hamiltonians. |
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Keywords: | |
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