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Microcanonical Particlization with Local Conservation Laws.

Dmytro Oliinychenko1, Volker Koch1

  • 1Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720, USA.

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Summary
This summary is machine-generated.

We developed a novel particlization method for transitioning from relativistic hydrodynamics to particle transport. This technique microcanonically preserves fundamental conserved quantities, enabling accurate fluctuation studies.

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Area of Science:

  • Nuclear Physics
  • High-Energy Physics
  • Computational Physics

Background:

  • Relativistic hydrodynamics and particle transport are crucial for modeling high-energy collisions.
  • Simulating the transition between these regimes (particlization) is computationally challenging.
  • Accurate particlization is needed to study fluctuations and correlations in small systems.

Purpose of the Study:

  • To introduce a new sampling method for particlization.
  • To ensure local conservation of energy, momentum, baryon number, strangeness, and electric charge in every sample.
  • To facilitate stochastic hydrodynamics and the study of small systems.

Main Methods:

  • The method employs Metropolis sampling.
  • Sampling is applied to particles within distinct patches of the space-time surface.
  • Hydrodynamic and kinetic evolutions are matched at the switching surface.

Main Results:

  • The proposed particlization method preserves all relevant conserved quantities microcanonically.
  • This ensures the physical integrity of each generated sample.
  • The method is suitable for stochastic hydrodynamics and small system studies.

Conclusions:

  • The novel sampling method provides an accurate and efficient way to perform particlization.
  • It is essential for advanced studies of fluctuations and correlations in relativistic systems.
  • This technique advances the simulation capabilities in high-energy nuclear and particle physics.