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QCD Instantons and the Soft Pomeron
High Energy Physics - Phenomenology · Submitted 18 Jul 2000
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We argue that this interaction may be responsible for the structure of the soft Pomeron.
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The paper's own sentences, arranged. Each label is drawn from a closed vocabulary; the number beside it is the probability the classifier gave that label. Numbers in the tables are the authors', checked by code. No sentence in this record was written by a model.
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The abstract, sentence by sentence
We study the role of semi-classical QCD vacuum solutions in high energy scattering by considering the instanton contribution to hadronic cross sections. We propose a new type of instanton-induced interactions (``instanton ladder'') that leads to the rising with energy hadronic cross section of Regge type (the Pomeron). We argue that this interaction may be responsible for the structure of the soft Pomeron. The intercept is calculated. It has a non-analytic dependence on the strong coupling constant, allowing a non-singular continuation into the non-perturbative region. We derive the Pomeron trajectory, which appears to be approximately linear in some range of (negative) momentum transfer t, but exhibits a curvature at small t. Possible role of instantons in multiparticle production is also discussed.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | We study the role of semi-classical QCD vacuum solutions in high energy scattering by considering the instanton contribution to hadronic cross sections. | contribution 0.85 | 0.88 | 0.05 | asserted 0.80 |
| s1 | We propose a new type of instanton-induced interactions (``instanton ladder'') that leads to the rising with energy hadronic cross section of Regge type (the Pomeron). | contribution 0.99 | 0.90 | 0.64 | asserted 0.72 |
| s2 | We argue that this interaction may be responsible for the structure of the soft Pomeron. | interpretation 0.99 | 0.46 | 0.46 | hedged possibility 1.00 |
| s3 | The intercept is calculated. | result 0.61 | 0.91 | 0.05 | asserted 0.94 |
| s4 | It has a non-analytic dependence on the strong coupling constant, allowing a non-singular continuation into the non-perturbative region. | result 0.94 | 0.83 | 0.07 | asserted 1.00 |
| s5 | We derive the Pomeron trajectory, which appears to be approximately linear in some range of (negative) momentum transfer t, but exhibits a curvature at small t. | result 0.99 | 0.95 | 0.12 | hedged possibility 0.61 |
| s6 | Possible role of instantons in multiparticle production is also discussed. | contribution 0.78 | 0.52 | 0.03 | unclear 0.59 |
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The paper
Original abstract
We study the role of semi-classical QCD vacuum solutions in high energy scattering by considering the instanton contribution to hadronic cross sections. We propose a new type of instanton-induced interactions (``instanton ladder'') that leads to the rising with energy hadronic cross section of Regge type (the Pomeron). We argue that this interaction may be responsible for the structure of the soft Pomeron. The intercept is calculated. It has a non-analytic dependence on the strong coupling constant, allowing a non-singular continuation into the non-perturbative region. We derive the Pomeron trajectory, which appears to be approximately linear in some range of (negative) momentum transfer t, but exhibits a curvature at small t. Possible role of instantons in multiparticle production is also discussed.
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References
How the literature uses it
11 arXiv papers cite this in 14 sentences
Papers citing it · 9 sentences without a confident label
Uses its method or tool 1 paper
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The general rules for finding the vertex from such kind of the Green's function is the following (see for example Ref. [ref] ): go to momentum representation for produced particle, multiply by inverse propagator $G^-1(k_i)$ , in a such amputated Green's function put particles on the mass shell ( say $k^2_i=0$, as in the case of gluons).
D-instantons and multiparticle production in N=4 SYM · The general form of the multiperipheral (ladder) diagram · 0.97
Compares with it 1 paper
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It is interesting to compare the pictures of multiparticle production based on QCD instanton ladders at weak coupling [ref] and on D-instanton ladders in strongly coupled N=4 SYM.
D-instantons and multiparticle production in N=4 SYM · Conclusions · 0.97
Cites it as background 3 papers
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The role of instantons in high energy collisions have been discussed in [ref] , [ref] , in which it was suggested that instantons are responsible for the so called “soft pomeron", operating at a momentum scale $∼1/ρ∼1 GeV$, less than that for perturbative BFKL Pomeron.
Macroscopic Chirality Fluctuations in Heavy Ion Collisions should induce CP forbidden Decays · Introduction · 0.87
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A closely related topic is the role of topological effects in high–energy scattering and multi–particle production which has been studied in Refs [ref] .
The effects of topological charge change in heavy ion collisions: "Event by event P and CP violation" · Introduction · 1.00
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A closely related topic is the role of topological effects in high–energy scattering and multi–particle production which has been studied in Refs [ref] , [ref] , [ref] , [ref] , [ref] .
Charge separation induced by P-odd bubbles in QCD matter · Introduction · 1.00
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