isovector meaning in Hindi

Examples

1. Using the fully consistent rrpa method , we have studied the properties of collective multipole excitations for several closed - shell and closed sub - shell nucleus in the isoscalar modes and isovector modes
2. A significant difference on the scalar self - energy and effective mass of neutrons in asymmetric nuclear matter , especially in neutron matter , is observed . the difference would result in an unreasonable sigh of the extracted effective couplings for isovector mesons
3. The results indicate that the effects of the dirac sea states are pronounced in the collective multipole excitations for nuclei , especially on the isoscalar giant modes , but become weaker for light nuclei , while the contributions on the isovector modes are negligible
4. This should be an incentive to apply the rrpa method with non - linear effective lagrangians to study other systems such as unstable nuclei near drip lines . for nuclei with the extreme value of n / z , low - lying collective excitations are found in isovector dipole modes , which are mainly due to the particle - hole excitation of weakly bound states near fermi surface and the isospin mixture effect
5. The effective coupling constants including isoscalar and mesons and isovector and mesons in the rmf are extracted from the dbhf results in symmetric and asymmetric nuclear matter . two sets of effective interactions in the rmf approach are deduced by imposing a condition , where the dbhf scalar and . vector self - energy or scalar self - energy and binding energy per nucleon at each density and asymmetry parameter are reproduced , respectively