Particle Creation at a Point Source by Means of Interior-Boundary Conditions
Particle Creation at a Point Source by Means of Interior-Boundary Conditions
复制标题
通过内部边界条件在点源处产生粒子
DOI:
10.1007/s11040-018-9270-8
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
R. Tumulka
中科院分区:
文献类型:
--
作者:
J. Lampart;J. Schmidt;S. Teufel;R. Tumulka
We consider a way of defining quantum Hamiltonians involving particle creation and annihilation based on aninterior-boundary condition(IBC) on the wave function, where the wave function is the particle-position representation of a vector in Fock space, and the IBC relates (essentially) the values of the wave function at any two configurations that differ only by the creation of a particle. Here we prove, for a model of particle creation at one or more point sources using the Laplace operator as the free Hamiltonian, that a Hamiltonian can indeed be rigorously defined in this way without the need for any ultraviolet regularization, and that it is self-adjoint. We prove further that introducing an ultraviolet cut-off (thus smearing out particles over a positive radius) and applying a certain known renormalization procedure (taking the limit of removing the cut-off while subtracting a constant that tends to infinity) yields, up to addition of a finite constant, the Hamiltonian defined by the IBC.
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影响因子:
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作者:
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通讯作者:
Till Micheler
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
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R. Minlos
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R. Minlos
DOI:
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发表时间:
1951
期刊:
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M. Moshinsky
DOI:
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发表时间:
1951
期刊:
影响因子:
--
作者:
M. Moshinsky
通讯作者:
M. Moshinsky
DOI:
--
发表时间:
2018
期刊:
Annales de l'Institute Henri Poincare. Physique theorique
影响因子:
--
作者:
J. Lampart
通讯作者:
J. Lampart