Glasma phase of relativistic heavy-ion collisions
Bibliographic record
Abstract
Within the Color Glass Condensate approach to relativistic heavy-ion collisions, a phase of matter from the earliest stage of the collision is a glasma formed by highly populated gluon fields that can be approximately treated as classical. Applying the method of proper time expansion, which is designed to study this earliest stage, analytic formulas of various glasma characteristics are derived. We calculate components of the glasma energy–momentum tensor which include: the energy density, longitudinal and transverse pressure, and the Poynting vector. This vector allows one to obtain the collective flow of the glasma and its angular momentum. The temporal evolution of all these quantities is studied and estimates of their numerical values are given. Using the appropriate Fokker–Planck equation, we also derive glasma transport characteristics, in particular the momentum broadening coefficient q ˆ . Analysing the temporal evolution of q ˆ , we conclude that the short lived glasma phase plays an important role in the observed jet quenching.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".