Suggest a possible quark composition of a proton and neutron. View Solution Q3 It is now known that a proton and a neutron consist of three elementary units called 'quarks'. Two types of quarks are involved the 'up' quark (u) of charge +23e and the 'down' quark (d)...
Define down quark. down quark synonyms, down quark pronunciation, down quark translation, English dictionary definition of down quark. n. Abbr. d The flavor of quark that has a charge of - 1/3 and a mass about 10 times that of an electron, belongs to the
We use the modified quark-meson coupling (MQMC) model to study the composition profile of neutron star matter and compare the results with those calculated by quantum hadrodynamics (QHD). Both MQMC and QHD model parameters are adjusted to produce exactly the same saturation properties so that we...
Now, the EoS of matter in the interior of NSs and its importance is still an open challenge in research of particle physics as well as stellar astrophysics. The interior structure and composition mainly depend on the nature and interaction of different type matters, presented as mixture in the...
Composition, Structure and Evolution of Neutron Stars with Kaon\n Condensates Neutrino trapping shifts both kaon condensation and the quark matter transition to higher densities than in the case of cold, catalyzed matter. A newly--... V Thorsson,JM Lattimer,M Prakash - 《Physics》 被引量: 284...
We investigate the role of trapped neutrinos on the composition of protoneutron stars with quark-hadron phase transitions. Trapped neutrinos shift the transition to higher baryon densities and also reduce the extent of a mixed phase in comparison to neutrino-free matter. Thus, a mixed phase of ba...
Keywords: Neutron stars; equations of state of neutron-star matter; quark deconfine- ment. 1. Introduction Neutron stars are the densest macroscopic objects in the universe. They represent the limit beyond which gravity overwhelm all the other forces of nature and lead to the formation of a ...
Neutron star properties in the quark-meson coupling model The effects of internal quark structure of baryons on the composition and structure of neutron star matter with hyperons are investigated in the quark-meso... S Pal,M Hanauske,I Zakout,... - arXiv 被引量: 99发表: 1999年 Quark de...
The latter transition may be induced by a relatively small change in compound composition (cf. the behavior of La2 − xSrxO4 or YBa2Cu3O7 − x as a function of x). It is quite interesting to note that oxides such as YBa2Cu3O7 − x may be synthesized in either insulating (x ...
We demonstrate that the form and location (not the size or spacing) of the energetically preferred geometrical structure of the crystalline quark-hadron mixed phase in a neutron star are very sensitive to finite size terms beyond the surface term. We consider two independent approaches of including...