Renormalization issues for a whole abelian model

2015 ◽  
Vol 10 (2) ◽  
pp. 2715-2722
Author(s):  
Renato Doria ◽  
J. Chauca
Keyword(s):  
Perturbation Theory ◽  
Lorentz Force ◽  
Collective Behavior ◽  
Power Counting ◽  
Action Principle ◽  
Group A ◽  
The Common ◽  
Renormalization Constants

Considering that nature acts as a group, a whole abelian model is being developed. Classically, new aspects were observed as elds collective behavior and elds interacting among themselves and with mass through a global Lorentz force. This work analyzes some quantic aspects. Perturbation theory means that we know about 1-PI graphs. In a previous work, we have studied the quantum action principle, power-counting, primitively divergent graphs, Ward-Takahashi identities. This work concerns the study of counterterms and physical perturbation theory. It introduces a whole renormalization programme which informations are obtained from the common gauge parameter which establishes the elds set. It derives relationships between renormalization constants and on perturbative persistence on one masslessness eld in the fAIg set. It also argues on nitude possibilities through a whole expansion for the graphs.

scholarly journals The axion-baryon coupling in SU(3) heavy baryon chiral perturbation theory

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Thomas Vonk ◽  
Feng-Kun Guo ◽  
Ulf-G. Meißner
Keyword(s):  
Perturbation Theory ◽  
Chiral Perturbation Theory ◽  
Heavy Baryon ◽  
Power Counting ◽  
Flavor Symmetry ◽  
Chiral Perturbation ◽  
Third Order ◽  
Stellar Objects ◽  
The Past ◽  
Dense Nuclear Matter

Abstract In the past, the axion-nucleon coupling has been calculated in the framework of SU(2) heavy baryon chiral perturbation theory up to third order in the chiral power counting. Here, we extend these earlier studies to the case of heavy baryon chiral perturbation theory with SU(3) flavor symmetry and derive the axion coupling to the full SU(3) baryon octet, showing that the axion also significantly couples to hyperons. As studies on dense nuclear matter suggest the possible existence of hyperons in stellar objects such as neutron stars, our results should have phenomenological implications related to the so-called axion window.

scholarly journals A MANIFESTLY GAUGE INVARIANT AND UNIVERSAL CALCULUS FORSU(N) YANG–MILLS

2006 ◽  
Vol 21 (23n24) ◽  
pp. 4627-4761 ◽  
Author(s):  
OLIVER J. ROSTEN
Keyword(s):  
Perturbation Theory ◽  
Renormalization Group ◽  
Explicit Dependence ◽  
Gauge Invariant ◽  
Yang Mills ◽  
Group A ◽  
Β Function ◽  
Exact Renormalization Group

Within the framework of the Exact Renormalization Group, a manifestly gauge invariant calculus is constructed for SU (N) Yang–Mills. The methodology is comprehensively illustrated with a proof, to all orders in perturbation theory, that the β function has no explicit dependence on either the seed action or details of the covariantization of the cutoff. The cancellation of these nonuniversal contributions is done in an entirely diagrammatic fashion.

Microbiology of cerumen in patients with recurrent otitis externa and cases with open mastoidectomy cavities

2004 ◽  
Vol 118 (4) ◽  
pp. 260-262 ◽  
Author(s):  
Yavuz Selim Pata ◽  
Candan Öztürk ◽  
Yücel Akbaş ◽  
Murat Ünal ◽  
Kemal Görür ◽  
...  
Keyword(s):  
Staphylococcus Epidermidis ◽  
Otitis Externa ◽  
Chronic Otitis Media ◽  
Open Cavity ◽  
Microbial Flora ◽  
Microbial Count ◽  
Group A ◽  
The Common ◽  
The Mean ◽  
Group B

This study investigated the common flora of human cerumen in patients with recurrent otitis externa, and subjects who had been operated on and had an open mastoidectomy cavity from chronic otitis media.Cerumen samples were collected from three groups; group A (n = 20) consisted of patients with recurrent otitis externa, group B (n = 20) consisted of patients with an open cavity and group C (n = 30) consisted of healthy subjects.The mean of the microbial count was 3.4 × 104 in group A, 3.08 × 104 in group B and 2.48 × 104 in group C. The most commonly isolated microorganism from the three groups was Staphylococcus epidermidis. No growth was observed in five cases (25 per cent) in group A and in three cases (10 per cent) in group C. In groupB antimicrobial growth was observed in all samples. In 46 (65 per cent) of the cerumen samples,the isolates were monomicrobial and 24 (35 per cent) of the cerumen samples were polymicrobial. The isolates were polymicrobial in 65 per cent of group A, 20 per cent in group B and 23.3 per cent in group C.In the process of investigating the microbial flora of cerumen in all the three groups, microbial growth was observed from all the samples from patients with an open cavity, unlike the other groups, and it was determined that the group with recurrent external otitis had the most abundant microbial flora.

scholarly journals Clinical and immunologic assessment of a complex of therapeutic-preventive measures concerning chronic catarrhal gingivitis in children with comorbid diabetes mellitus

2020 ◽  
Vol 73 (2) ◽  
pp. 298-301
Author(s):  
Oksana I. Godovanets ◽  
Аnastasiia V. Kotelban ◽  
Petro V. Moroz ◽  
Oleksandr O. Vitkovskyi ◽  
Tetiana S. Kitsak ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Oral Fluid ◽  
Preventive Measures ◽  
Main Group ◽  
Antiseptic Solution ◽  
Similar Tendency ◽  
Group A ◽  
Comparative Group ◽  
The Common

The aim of our study is to increase the efficacy of treatment of chronic catarrhal gingivitis in children suffering from type 1 diabetes mellitus by means of improvement of the methods of pharmacological correction on the basis of investigation of clinical-immunologic peculiarities of the disease. Materials and methods: 2 groups of the study were formed. Children received basic insulin therapy. The treatment of chronic catarrhal gingivitis in children from the main group were suggested the antiseptic solution “Decasan”; pill of a probiotic action “BioGaia ProDentis” and the immune modulator “Imupret”. Children from the comparative group were treated according to the common scheme. Results: The state of the oral hygiene in all the children after treatment improved considerably. According to PMA index inflammatory process was completely eliminated in children from the main group. A similar tendency was observed concerning sextants with gingival bleeding. In children dental calculus was lacking after treatment. Lysozyme activity in the oral fluid of children after treatment increased approximately 37.50% in the main group, and 16,67 % – in the comparison group. A similar tendency was found concerning sIgА level. Conclusions: Therefore, conducted course of the treatment concerning chronic catarrhal gingivitis promoted considerable improvement of the periodontal tissue in children.

scholarly journals Improving the understanding of jet grooming in perturbation theory

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Andrew J. Larkoski
Keyword(s):  
Perturbation Theory ◽  
Phase Space ◽  
Cross Section ◽  
Power Counting ◽  
Numerical Results ◽  
Factorization Theorem ◽  
Jet Physics ◽  
Leading Order ◽  
Physics Program ◽  
Jet Observables

Abstract Jet grooming has emerged as a necessary and powerful tool in a precision jet physics program. In this paper, we present three results on jet grooming in perturbation theory, focusing on heavy jet mass in e+e−→ hadrons collisions, groomed with the modified mass drop tagger. First, we calculate the analytic cross section at leading-order. Second, using the leading-order result and numerical results through next-to-next-to-leading order, we show that cusps in the distribution on the interior of phase space at leading-order are softened at higher orders. Finally, using analytic and numerical results, we show that terms that violate the assumptions of the factorization theorem for groomed jet mass are numerically much smaller than expected from power counting. These results provide important information regarding the convergence of perturbation theory for groomed jet observables and reliable estimates for residual uncertainties in a precision calculation.

Occurrence of mono- and di-glycosylated conjugates of T-2 and HT-2 toxins in naturally contaminated cereals

2012 ◽  
Vol 5 (3) ◽  
pp. 231-240 ◽  
Author(s):  
Z. Veprikova ◽  
M. Vaclavikova ◽  
O. Lacina ◽  
Z. Dzuman ◽  
M. Zachariasova ◽  
...  
Keyword(s):  
High Performance ◽  
Analytical Procedure ◽  
Solid Phase ◽  
Analytical Determination ◽  
Preparation Methods ◽  
Group A ◽  
Cereal Samples ◽  
The Common ◽  
Common Parent ◽  
First Time

An increasing incidence of T-2 and HT-2 toxins (T-2 and HT-2) representing group A trichothecenes has been observed in Fusarium infected small grain cereals in the last decade. Quite recently, the existence of glucosides of T-2 and HT-2 has also been proved next to the common parent forms. There is a strong desire to deepen the knowledge of the occurrence of these conjugates and the possibilities of their analytical determination. A new analytical procedure has been developed for monitoring T-2/HT-2 conjugates in cereal samples. Four different sample preparation methods based on crude acetonitrile:water extraction, QuEChERS, solid phase extraction and immunoaffinity clean-up, were tested. The latter approach employing dedicated immunoaffinity cross-reactive cartridges was shown to be the best option for selective isolation and pre-concentration of the target conjugated analytes. The samples obtained in this way were examined by ultra-high performance liquid chromatography hyphenated to high resolution tandem mass spectrometry that enabled the confirmation of the presence of conjugated T-2 and HT-2. In addition to mono-glycosylated forms of T-2 and HT-2 detected in naturally contaminated barley, wheat and oats, we have also documented for the first time the existence of diglucosides of HT-2 in barley.

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