The numerical results of the populations for the baryon octet in neutron star matter have been presented by solving a set transcendental equations in the framework of the relativistic mean field approximation. The inf...The numerical results of the populations for the baryon octet in neutron star matter have been presented by solving a set transcendental equations in the framework of the relativistic mean field approximation. The influence of the hyperon interactions on hyperon populations in neutron star matter is discussed. The results manifest that when the ratio of the hyperon-to-nucleon couplings increases, all hyperons appear towards low baryon density direction.展开更多
We investigate electronic properties of a hierarchical multilayer structure consisting of stacking of barriers and wells. The structure is formed in a sequence of generations, each of which is constructed with the sam...We investigate electronic properties of a hierarchical multilayer structure consisting of stacking of barriers and wells. The structure is formed in a sequence of generations, each of which is constructed with the same pattern but with the previous generation as the basic building blocks. We calculate the transmission spectrum which shows the multifractal behavior for systems with large generation index. From the analysis of the average resistivity and the multifractal structure of the wavefunctions, we show that there exist different types of states exhibiting extended, localized and intermediate characteristics. The degree of localization is sensitive to the variation of the structural parameters.Suggestion of the possible experimental realization is discussed.展开更多
In the Hellings Nordtvedt theory, we obtain some expressions of energy radiation and mass defect effect for a kind of the active galactic nuclei, which is meaningful to calculating the energy radiation in the processi...In the Hellings Nordtvedt theory, we obtain some expressions of energy radiation and mass defect effect for a kind of the active galactic nuclei, which is meaningful to calculating the energy radiation in the procession of forming this kind of celestial bodies. This calculation can give some interpretation for energy source of the jet from the active galactic nuclei.展开更多
In the present work,we study the effect of the isovector scalar meson a_(0)(980)(also calledδ)to the asymmetric matter properties by constructing a parity doublet model with including the a_(0)(980)meson based on the...In the present work,we study the effect of the isovector scalar meson a_(0)(980)(also calledδ)to the asymmetric matter properties by constructing a parity doublet model with including the a_(0)(980)meson based on the approximate chiral U(2)_(L)×U(2)_(R)symmetry.The effect of a_(0)(980)to the properties of symmetric matter such as symmetry energy S(n_(B)),symmetry incompressibility K_(sym),symmetry skewness Q_(sym)is investigated.We find that,a_(0)(980)meson has significant effect to these nuclear matter properties especially when the chiral invariant mass of nucleon m_(0)is small.We also study the effect of the a_(0)(980)meson to the neutron star(NS)properties and find that it increase the radius of NSs,especially those having intermediate mass.Finally,we further constrain the value of the chiral invariant mass of the nucleon to 640 MeV≲m_(0)≲860 MeV for L_(0)=57:7MeV by comparing with the recent accepted value of K_(sym)and neutron star(NS)observational data.展开更多
In this review article we give a brief overview on some recent progress in quark pairings in dense quark/nuclear matter mostly developed in the past five years.We focus on following aspects in particular:the BCS-BEC c...In this review article we give a brief overview on some recent progress in quark pairings in dense quark/nuclear matter mostly developed in the past five years.We focus on following aspects in particular:the BCS-BEC crossover in the CSC phase,the baryon formation and dissociation in dense quark/nuclear matter,the Ginzburg-Landau theory for three-flavor dense matter with UA(1) anomaly,and the collective and Nambu-Goldstone modes for the spin-one CSC.展开更多
We investigate the cold nuclear matter(CNM) effects on isolated prompt photon and isolated prompt photon associated jet productions in nuclear collisions at the NLO accuracy by using the EPS09 NLO nuclear parton distr...We investigate the cold nuclear matter(CNM) effects on isolated prompt photon and isolated prompt photon associated jet productions in nuclear collisions at the NLO accuracy by using the EPS09 NLO nuclear parton distribution functions and their error sets.Nuclear modification factors of isolated prompt photon and isolated prompt photon+jet productions due to CNM effects in p+A and A+A reactions at the RHIC and the LHC are provided with varying rapidity and transverse momentum of the final state photon.It is shown that the CNM effects on isolated prompt photon and photon+jet are modest,which give a small enhancement at low pT region and a more obvious suppression at large pT at central rapidity.At forward rapidity a pronounced suppression of γ as well as γ+jet is always observed.展开更多
Since the announcement of the discovery of a"perfect liquid"at the Relativistic Heavy Ion Collider (RHIC),significant progress has been made towards understanding the details of the property of the matter th...Since the announcement of the discovery of a"perfect liquid"at the Relativistic Heavy Ion Collider (RHIC),significant progress has been made towards understanding the details of the property of the matter that RHIC has created.Yet there are still puzzles and unsolved problems. At frontiers from other accelerator facilities like Gesellschaft fur Schwerionenforschung,German (GSI) and the Heavy Ion Cooler Storage Ring at institute of Modern Physics,China (CSR), which are to understand the structure and behavior of the world that surrounds us—a展开更多
基金The project supported by National Natural Science Foundation of China under Grant Nos.10047001 and 10275029+2 种基金the State Key Basic Research Development Program under Grant No.G2000-0774-07the CAS Knowledge Innovation Project under Contract No.KJCX2-SW-N02
文摘The numerical results of the populations for the baryon octet in neutron star matter have been presented by solving a set transcendental equations in the framework of the relativistic mean field approximation. The influence of the hyperon interactions on hyperon populations in neutron star matter is discussed. The results manifest that when the ratio of the hyperon-to-nucleon couplings increases, all hyperons appear towards low baryon density direction.
文摘We investigate electronic properties of a hierarchical multilayer structure consisting of stacking of barriers and wells. The structure is formed in a sequence of generations, each of which is constructed with the same pattern but with the previous generation as the basic building blocks. We calculate the transmission spectrum which shows the multifractal behavior for systems with large generation index. From the analysis of the average resistivity and the multifractal structure of the wavefunctions, we show that there exist different types of states exhibiting extended, localized and intermediate characteristics. The degree of localization is sensitive to the variation of the structural parameters.Suggestion of the possible experimental realization is discussed.
基金The project supported by National Natural Science Foundation of China under Grant No.19975018+2 种基金National Basic Research Program of China under Grant No.2003CB716300Natural Science Foundation of Hunan Province of China under Grant No.01JJY2084
文摘In the Hellings Nordtvedt theory, we obtain some expressions of energy radiation and mass defect effect for a kind of the active galactic nuclei, which is meaningful to calculating the energy radiation in the procession of forming this kind of celestial bodies. This calculation can give some interpretation for energy source of the jet from the active galactic nuclei.
文摘In the present work,we study the effect of the isovector scalar meson a_(0)(980)(also calledδ)to the asymmetric matter properties by constructing a parity doublet model with including the a_(0)(980)meson based on the approximate chiral U(2)_(L)×U(2)_(R)symmetry.The effect of a_(0)(980)to the properties of symmetric matter such as symmetry energy S(n_(B)),symmetry incompressibility K_(sym),symmetry skewness Q_(sym)is investigated.We find that,a_(0)(980)meson has significant effect to these nuclear matter properties especially when the chiral invariant mass of nucleon m_(0)is small.We also study the effect of the a_(0)(980)meson to the neutron star(NS)properties and find that it increase the radius of NSs,especially those having intermediate mass.Finally,we further constrain the value of the chiral invariant mass of the nucleon to 640 MeV≲m_(0)≲860 MeV for L_(0)=57:7MeV by comparing with the recent accepted value of K_(sym)and neutron star(NS)observational data.
基金Supported by the National Natural Science Foundation of China under Grant No. 10735040
文摘In this review article we give a brief overview on some recent progress in quark pairings in dense quark/nuclear matter mostly developed in the past five years.We focus on following aspects in particular:the BCS-BEC crossover in the CSC phase,the baryon formation and dissociation in dense quark/nuclear matter,the Ginzburg-Landau theory for three-flavor dense matter with UA(1) anomaly,and the collective and Nambu-Goldstone modes for the spin-one CSC.
基金Supported by the Ministry of Education of China with Project No. NCET-09-0411the National Natural Science Foundation of China with Project Nos. 11075062,11221504+1 种基金the Natural Science Foundation of Hubei Province with Project No. 2010CDA075Self-Determined Research Funds of CCNU
文摘We investigate the cold nuclear matter(CNM) effects on isolated prompt photon and isolated prompt photon associated jet productions in nuclear collisions at the NLO accuracy by using the EPS09 NLO nuclear parton distribution functions and their error sets.Nuclear modification factors of isolated prompt photon and isolated prompt photon+jet productions due to CNM effects in p+A and A+A reactions at the RHIC and the LHC are provided with varying rapidity and transverse momentum of the final state photon.It is shown that the CNM effects on isolated prompt photon and photon+jet are modest,which give a small enhancement at low pT region and a more obvious suppression at large pT at central rapidity.At forward rapidity a pronounced suppression of γ as well as γ+jet is always observed.
文摘Since the announcement of the discovery of a"perfect liquid"at the Relativistic Heavy Ion Collider (RHIC),significant progress has been made towards understanding the details of the property of the matter that RHIC has created.Yet there are still puzzles and unsolved problems. At frontiers from other accelerator facilities like Gesellschaft fur Schwerionenforschung,German (GSI) and the Heavy Ion Cooler Storage Ring at institute of Modern Physics,China (CSR), which are to understand the structure and behavior of the world that surrounds us—a
