Results 291 to 300 of about 2,277,693 (344)
Some of the next articles are maybe not open access.
Operator regularization of Green’s functions
Physical Review Letters, 1987Operator regularization in background-field quantization facilitates the use of a perturbative expansion due to Schwinger to compute Green's functions to all orders. The procedure is distinct from the usual Feynman technique. No explicit divergences are encountered.
, McKeon, , Sherry
openaire +2 more sources
Operator regularization and composite operators
Canadian Journal of Physics, 1990We demonstrate how operator regularization can be used to compute radiative corrections to Green's functions involving composite operators. No divergences are encountered and no symmetry-breaking regulating parameter need be introduced into the initial Lagrangian.
openaire +1 more source
Regularized traces of integrodifferential operators
Mathematical Notes of the Academy of Sciences of the USSR, 1988Let T be a self-adjoint operator with discrete spectrum \(\{\lambda_ n\}\) in a separable Hilbert space and let \(\sum_{| \lambda_ n| \leq \lambda}1=O(\lambda^ p)\) as \(\lambda\) \(\to \infty\) with ...
Lyubishkin, V. A., Tsopanov, I. D.
openaire +3 more sources
Analysis Mathematica, 1981
ПустьР - линейный диф ференциальный опера тор с достаточно гладкими коэффициентами. По определению,P явля ется оператором внут ренней регулярности на ω ⊂R n т огда и только тогда, когда\(u \in B_{p,k_{ - N} }^{loc} (\Omega )\) и ω′⊂ω из условия\(Pu \in B_{p,k_s }^{loc} (\Omega ')\) вытекает, что\(u \in B_{p,k_s k}^{loc} (\Omega ')\), где −N+1≦s≦N ...
openaire +2 more sources
ПустьР - линейный диф ференциальный опера тор с достаточно гладкими коэффициентами. По определению,P явля ется оператором внут ренней регулярности на ω ⊂R n т огда и только тогда, когда\(u \in B_{p,k_{ - N} }^{loc} (\Omega )\) и ω′⊂ω из условия\(Pu \in B_{p,k_s }^{loc} (\Omega ')\) вытекает, что\(u \in B_{p,k_s k}^{loc} (\Omega ')\), где −N+1≦s≦N ...
openaire +2 more sources
Operator regularization on the hypersphere
Canadian Journal of Physics, 1989Operator regularization has proved to be a viable way of computing radiative corrections that avoids both the insertion of a regulating parameter into the initial Lagrangian and the occurrence of explicit infinities at any stage of the calculation. We show how this regulating technique can be used in conjunction with field theories defined on an n + 1-
openaire +1 more source
2003
In an 〈E,M〉-categoryX for sinks, we identify necessary conditions for Galois connections from the power collection of the class of (composable pairs) of morphisms inM to factor through the “lattice” of all closure operators onM, and to factor through certain sublattices. This leads to the notion ofregular closure operator.
openaire +1 more source
In an 〈E,M〉-categoryX for sinks, we identify necessary conditions for Galois connections from the power collection of the class of (composable pairs) of morphisms inM to factor through the “lattice” of all closure operators onM, and to factor through certain sublattices. This leads to the notion ofregular closure operator.
openaire +1 more source
Functional Analysis and Its Applications, 1968
Vainikko, G. M., Umanskij, J. B.
openaire +2 more sources
Vainikko, G. M., Umanskij, J. B.
openaire +2 more sources
Positive Schur properties in spaces of regular operators
, 2015P. Tradacete
semanticscholar +1 more source
Operator regularization with superfields
Physical Review D, 1987, McKeon, , Rajpoot, , Sherry
openaire +2 more sources