High Energy Physics - Phenomenology · arXiv:hep-ph/0412129 v2 · submitted 9 Dec 2004
Pion, sigma-meson and diquarks in the 2SC phase of dense cold quark matter
The paper says
“Moreover, we have found in this phase an abnormal number of three, instead of five, Nambu–Goldstone bosons, together with a color doublet of light stable diquark modes and a color-singlet heavy diquark resonance with the mass ∼ 1100 MeV.”
from the abstract · picked out as the main claim by a classifier
Reviews
Reviews by people
No person has reviewed this paper on Pith yet. A scientist listed on Pith can review it for a fee, and their review is published here whatever it concludes.
The paper
Abstract
The spectrum of meson and diquark excitations of dense cold quark matter is investigated in the framework of a Nambu–Jona-Lasinio type model for light quarks of two flavors. It was found out that a first order phase transition occurs when the chemical potential μ exceeds the critical value μc = 350 MeV. Above μc, the diquark condensate $\vev{qq}$ forms, breaking the color symmetry of strong interaction. The masses of π- and σ-mesons are shown to grow with the chemical potential μ in the color-superconducting phase, but the mesons themselves become almost stable particles due to the Mott effect. Moreover, we have found in this phase an abnormal number of three, instead of five, Nambu–Goldstone bosons, together with a color doublet of light stable diquark modes and a color-singlet heavy diquark resonance with the mass ∼ 1100 MeV. In the color symmetric phase, i.e. for μ < μc, the splitting between the masses of diquarks and antidiquarks is shown to arise if μ ≠ 0, contrary to the case of vanishing chemical potential, μ = 0, where the mass spectrum of antidiquarks and diquarks is degenerate at the value ∼ 700 MeV.
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. No sentence in this record was written by a model.
abstract compiled · 2026-09-23 · no language-model review
How the main claim is stated: asserted 1.00
What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.09 · human participants 0.01 · controlled comparison 0.32 · randomized assignment 0.01 · states quantitative result 0.98 · compares with prior results 0.20 · mentions code or data availability 0.01
The abstract, sentence by sentence
This table labels the abstract only (arXiv listing abstract v2). The number is the probability the classifier gave the label.
| Sentence | Role | The authors' own work | States the main conclusion | Strength |
|---|---|---|---|---|
| The spectrum of meson and diquark excitations of dense cold quark matter is investigated in the framework of a Nambu--Jona-Lasinio type model for light quarks of two flavors. | contribution 0.74 | 0.88 | 0.05 | asserted 0.85 |
| It was found out that a first order phase transition occurs when the chemical potential $\mu$ exceeds the critical value $\mu_c=350$ MeV. | result 1.00 | 0.92 | 0.18 | asserted 1.00 |
| Above $\mu_c$, the diquark condensate $\vev{qq}$ forms, breaking the color symmetry of strong interaction. | result 0.98 | 0.63 | 0.14 | asserted 1.00 |
| The masses of $\pi$- and $\sigma$-mesons are shown to grow with the chemical potential $\mu$ in the color-superconducting phase, but the mesons themselves become almost stable particles due to the Mott effect. | result 0.99 | 0.90 | 0.23 | asserted 1.00 |
| Moreover, we have found in this phase an abnormal number of three, instead of five, Nambu--Goldstone bosons, together with a color doublet of light stable diquark modes and a color-singlet heavy diquark resonance with the mass $\sim$ 1100 MeV. | result 1.00 | 0.96 | 0.34 | asserted 1.00 |
| In the color symmetric phase, \textit{i.e.} for $\mu <\mu_c$, the splitting between the masses of diquarks and antidiquarks is shown to arise if $\mu\ne 0$, contrary to the case of vanishing chemical potential, $\mu = 0$, where the mass spectrum of antidiquarks and diquarks is degenerate at the value $\sim$ 700 MeV. | result 1.00 | 0.88 | 0.09 | asserted 1.00 |
What kind of paper the classifier reports this is: theoretical result 0.98 · evidence from proof or derivation 0.66
What was examined, and what was not
Sources read
- arXiv listing abstract v2
Not examined
- full text
- figures and tables
- references and citing sentences
- relations to other papers
Levels run
- P abstract
Not run
- S sections
- T body sentences
- C citations
- R cross-paper relations
How the labels were made
Compiled by classifier-1.13-20260917 via OpenRouter, question bank abstract-p1-20260923, 2026-09-23: 1 request, 5,306 input tokens, $0.0002 reported.
Every quoted sentence on this record is the authors'. Every label is from Pith's closed vocabulary, with the probability shown beside it. This record as JSON
Cited by 1 Pith paper
Reviewed papers on Pith that cite this one. The full citation record
How the literature uses it
2 arXiv papers cite this in 2 sentences
Papers whose main result relates to this one's
States the same result 1 paper
-
Unlike that expectation, we find only three gapless diquark excitations of quark matter.
Abnormal number of Nambu-Goldstone bosons in the color-asymmetric 2SC phase of an NJL-type model · 0.98
States a conflicting result 1 paper
-
The spectrum of scalar diquarks in the color neutral 2SC phase consists of a heavy ($\rm SU_c(2)$-singlet) resonance with mass $\sim$ 1100 MeV, four light diquarks with mass $3|\mu_8|$, and one Nambu --Goldstone boson which is in accordance with the Goldstone theorem.
Mesons and diquarks in the color neutral 2SC phase of dense cold quark matter · 0.85
Challenges and discussion
Know something about this paper? Leave a comment.
Come back by email
A short list of the week's newly reviewed papers. Nothing is sent until you confirm from your inbox, and every email has a link that stops it. No account.
No comments yet.
Sign in to comment