V K B Kota
Articles written in Pramana – Journal of Physics
Volume 51 Issue 6 December 1998 pp 727-731
In the
Volume 60 Issue 1 January 2003 pp 59-74 Research Articles
It is shown that the proton-neutron interacting boson model (pnIBM) admits new symmetry limits with
Volume 82 Issue 4 April 2014 pp 743-755
Lie algebra symmetries and quantum phase transitions in nuclei
In this paper, an overview of some aspects of quantum phase transitions (QPT) in nuclei is given and they are: (i) QPT in interacting boson model ($sd$IBM), (ii) QPT in two-level models, (iii) critical point 𝐸(5) and 𝑋(5) symmetries, (iv) QPT in a simple solvable model with three-body forces. In addition, some open problems are also given.
Volume 82 Issue 4 April 2014 pp 757-767
The spectroscopic properties of ^{64}Zn and ^{64}Ni are calculated within the framework of the deformed shell model (DSM) based on Hartree–Fock states. GXPF1A interaction in 1 $f_{7/2}$, 2$p_{3/2}$, 1$f_{5/2}$ and 2$p_{1/2}$ space with ^{40}Ca as the core is employed. After ensuring that DSM gives good description of the spectroscopic properties of low-lying levels in these two nuclei considered, nuclear transition matrix elements (NTME) for the neutrinoless positron double beta decay (0$\nu \beta^+$ and $0\nu \beta^+$EC) of ^{64}Zn are calculated. The two-neutrino positron double beta decay halflife is also calculated for this nucleus.
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