In-Medium phenomena in Low Density Nuclear Matter

Spin Polarization Phenomena in Dense Nuclear Matter

Spin polarized states in nuclear matter with an effective nucleon-nucleon interaction are studied for a wide range of isospin asymmetries and densities. Based on a Fermi liquid theory, it is shown that there are a few possible scenarios of spin ordered phase transitions: (a) nuclear matter undergoes at some critical density a phase transition to a spin polarized state with the oppositely direct...

Pairing effects in low density domain of nuclear matter

Using equations, governing np pairing correlations in S = 1, T = 0 pairing channel (PRC 63 (2001) 021304(R)), it is shown that at low densities equations for the energy gap in the spectrum of quasiparticles and chemical potentials of protons and neutrons allow solutions with negative chemical potential. This corresponds to appearance of Bose– Einstein condensate (BEC) of deuterons in low densit...

Light particle clusterization in nuclear matter at very low density

L. Qin, J. B. Natowitz, G. Roepke, K. Hagel, R. Wada, Z. Chen, P. Sahu, S. Kowalski, C. Bottosso , S. Shlomo, M. Barbui, D. Fabris, M. Lunardon, S. Moretto, G. Nebbia, S. Pesente, V. Rizzi, G. Viesti, M. Cinausero, G. Prete, T. Keutgen, Y. El Masri, and Z. Majka University of Rostock, FB Physik, Rostock, Germany Institute of Physics, Silesia University, Katowice, Poland Dipartamento di Fisica d...

Numerical Simulation of Transport Phenomena in Nuclear Cores

Getting a better handle on nuclear matter at low density

Nuclear physicists rely on a phenomenological formula developed by Bethe and Weizsäcker to estimate the binding energy and thus mass of an atomic nucleus consisting of A nucleons with N neutrons and Z protons. This liquid-drop model formula tells us the following: (a) that uncharged symmetric nuclear matter (i.e., infinitely large with N = Z) is bound by about 16 MeV per nucleon, (b) that infin...