2,525 research outputs found
Contribution of matter fields to the Gell-Mann-Low function for N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives
Contribution of matter fields to the Gell-Mann-Low function for N=1
supersymmetric Yang-Mills theory, regularized by higher covariant derivatives,
is obtained using Schwinger-Dyson equations and Slavnov-Tailor identities. A
possible deviation of the result from the corresponding contribution in the
exact Novikov, Shifman, Vainshtein and Zakharov -function is discussed.Comment: 20 pages, 4 figure
Four-loop verification of algorithm for Feynman diagrams summation in N=1 supersymmetric electrodynamics
A method of Feynman diagrams summation, based on using Schwinger-Dyson
equations and Ward identities, is verified by calculating some four-loop
diagrams in N=1 supersymmetric electrodynamics, regularized by higher
derivatives. In particular, for the considered diagrams correctness of an
additional identity for Green functions, which is not reduced to the gauge Ward
identity, is proved.Comment: 14 pages, 9 figure
Summation of diagrams in N=1 supersymmetric electrodynamics, regularized by higher derivatives
For the massless N=1supersymmetric electrodynamics, regularized by higher
derivatives, the Feynman diagrams, which define the divergent part of the
two-point Green function and can not be found from Schwinger-Dyson equations
and Ward identities, are partially summed. The result can be written as a
special identity for Green functions.Comment: 16 pages, 10 figure
Towards proof of new identity for Green functions in N=1 supersymmetric electrodynamics
For the N=1 supersymmetric massless electrodynamics, regularized by higher
derivatives, we describe a method, by which one can try to prove the new
identity for the Green functions, which was proposed earlier. Using this method
we show that some contribution to the new identity are really 0.Comment: 16 pages, 1 figure, an error corrected, significant change
Diagnostics and Treatment of Acute Biliary Pancreatitis
The authors have suggested a new diagnostic algorithm to be applied in case of impacted bile duct stone of major duodenal papilla, based on prognosis of acute pancreatitis according to results of analysis of biochemical bile marker
Endoscopic biliary stenting for post-cholecystectomy bile leaks
This paper deals analyzes the treatment experience of 15 patients with bile leakage after laparoscopic cholecystectomy. All patients have undergone endoscopic transpapillary interventions in the bile ducts, including a retrograde cholangiography, papillotomy, biliary stenting, either individually or in combination with traditional surger
Endoscopic Drainage of the Pancreatic Pseudocyst through the Stomach or Duodenal Wall
In the article we have presented early outcome and long-term outcome of the usage of various methods of endoscopic drainage of the pancreatic pseudocyst through the stomach or duodenal wall in 56 patient
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