Light clusters and pasta phases in warm and dense nuclear matter

Sidney S. Avancini, Márcio Ferreira, Helena Pais, Constança Providência, and Gerd Röpke
Phys. Rev. C 95, 045804 – Published 20 April 2017

Abstract

The pasta phases are calculated for warm stellar matter in a framework of relativistic mean-field models, including the possibility of light cluster formation. Results from three different semiclassical approaches are compared with a quantum statistical calculation. Light clusters are considered as point-like particles, and their abundances are determined from the minimization of the free energy. The couplings of the light clusters to mesons are determined from experimental chemical equilibrium constants and many-body quantum statistical calculations. The effect of these light clusters on the chemical potentials is also discussed. It is shown that, by including heavy clusters, light clusters are present up to larger nucleonic densities, although with smaller mass fractions.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
6 More
  • Received 30 January 2017
  • Revised 11 March 2017

DOI:https://doi.org/10.1103/PhysRevC.95.045804

©2017 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & AstrophysicsNuclear Physics

Authors & Affiliations

Sidney S. Avancini1,2, Márcio Ferreira1, Helena Pais1, Constança Providência1, and Gerd Röpke3,4

  • 1CFisUC, Department of Physics, University of Coimbra, 3004-516 Coimbra, Portugal
  • 2Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis, C.P. 476, 88040-900 Santa Catarina, Brazil
  • 3Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
  • 4National Research Nuclear University (MEPhI), 115409 Moscow, Russia

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 95, Iss. 4 — April 2017

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review C

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×