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Simulating collisions of thick nuclei in the color glass condensate framework

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arxiv 1605.07184 v2 pith:YAAEFQSN submitted 2016-05-23 hep-ph nucl-th

Simulating collisions of thick nuclei in the color glass condensate framework

classification hep-ph nucl-th
keywords collisionscolornucleithicknessboost-invariancecondensatefiniteframe
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We present our work on the simulation of the early stages of heavy-ion collisions with finite longitudinal thickness in the laboratory frame in 3+1 dimensions. In particular we study the effects of nuclear thickness on the production of a glasma state in the McLerran-Venugopalan model within the color glass condensate framework. A finite thickness enables us to describe nuclei at lower energies, but forces us to abandon boost-invariance. As a consequence, random classical color sources within the nuclei have to be included in the simulation, which is achieved by using the colored particle-in-cell (CPIC) method. We show that the description in the laboratory frame agrees with boost-invariant approaches as a limiting case. Furthermore we investigate collisions beyond boost-invariance, in particular the pressure anisotropy in the glasma.

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  1. Analytic and Approximate Solutions to Color Glass Condensate in the Classical Weak-Field Limit

    nucl-th 2026-07 accept novelty 6.5

    In the weak-field CGC limit the glasma energy-momentum tensor has universal late-time scaling ε,PT∼1/τ and PL∼1/τ³, with closed Meijer-G forms in the MV model and controlled series in an improved Gaussian model.