Abnormal nuclear matter and many-body forces

1976 ◽  
Vol 268 (3) ◽  
pp. 408-444 ◽  
Author(s):  
Ebbe M. Nyman ◽  
Mannque Rho
Keyword(s):  
Nuclear Matter ◽  
Many Body ◽  
Body Forces

AN EFFECTIVE THEORY FOR NUCLEAR MATTER WITH GENUINE MANY-BODY FORCES

2012 ◽  
Vol 18 ◽  
pp. 182-190 ◽  
Author(s):  
CÉSAR A. Z. VASCONCELLOS ◽  
JORGE HORVATH ◽  
DIMITER HADJIMICHEF ◽  
ROSANA O. GOMES
Keyword(s):  
Nuclear Matter ◽  
Dense Matter ◽  
New Physics ◽  
Theoretical Research ◽  
Effective Theory ◽  
Many Body ◽  
Conceptual Issue ◽  
Body Forces ◽  
Nuclear Systems ◽  
Space Dynamics

Nuclear science has developed many excellent descriptions that embody various properties of the nucleus, and nuclear matter at low, medium and high densities. However, a full microscopic understanding of nuclear systems is still lacking. The aim of our theoretical research group is to shed some light on such challenges and particularly on open questions facing the high density nuclear many-body problem. Here we focus our attention on the conceptual issue of naturalness and its role in shaping the baryon-meson phase space dynamics in the description of the equation of state (EoS) of nuclear matter. In particular, in order to stimulate possible new directions of research, we discuss relevant aspects of a recently developed relativistic effective theory for nuclear matter with natural parametric couplings and genuine many-body forces. Among other topics we discuss in this work the connection of this theory with other known effective QHD models of the literature and its potentiality in describing a new physics for dense matter.

Many-body forces and the binding energy of high-density nuclear matter

1974 ◽  
Vol 10 (2) ◽  
pp. 871-887 ◽  
Author(s):  
Bruce H. J. McKellar ◽  
R. Rajaraman
Keyword(s):  
Binding Energy ◽  
Nuclear Matter ◽  
High Density ◽  
Many Body ◽  
Body Forces

A NUCLEAR MANY-BODY THEORY AT FINITE TEMPERATURE APPLIED TO A PROTONEUTRON STAR

2002 ◽  
Vol 11 (02) ◽  
pp. 83-104 ◽  
Author(s):  
GUILHERME F. MARRANGHELLO ◽  
CESAR A. Z. VASCONCELLOS ◽  
MANFRED DILLIG ◽  
J. A. DE FREITAS PACHECO
Keyword(s):  
Phase Transition ◽  
Nuclear Matter ◽  
Finite Temperature ◽  
Degrees Of Freedom ◽  
Many Body ◽  
Many Body Theory ◽  
The Masses ◽  
Protoneutron Stars ◽  
Protoneutron Star

Thermodynamical properties of nuclear matter are studied in the framework of an effective many-body field theory at finite temperature, considering the Sommerfeld approximation. We perform the calculations by using the nonlinear Boguta and Bodmer model, extended by the inclusion of the fundamental baryon octet and leptonic degrees of freedom. Trapped neutrinos are also included in order to describe protoneutron star properties through the integration of the Tolman–Oppenheimer–Volkoff equations, from which we obtain, beyond the standard relations for the masses and radii of protoneutron stars as functions of the central density, new results of these quantities as functions of temperature. Our predictions include: the determination of an absolute value for the limiting mass of protoneutron stars; new structural aspects on the nuclear matter phase transition via the behavior of the specific heat and, through the inclusion of quark degrees of freedom, the properties of a hadron-quark phase transition and hybrid protoneutron stars

Many-body forces in exactly solvable field-theoretical models

1975 ◽  
Vol 25 (3) ◽  
pp. 288-301 ◽  
Author(s):  
F. Calogero ◽  
D. De Santis
Keyword(s):  
Theoretical Models ◽  
Many Body ◽  
Body Forces ◽  
Exactly Solvable
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