Particles and Fields Seminar — HEP Seminar
Towards a comprehensive study of quantum phase transitions in atomic nuclei.
Dr. Noam Gavrielov
Grand Accélérateur National d'Ions Lourds, France
Abstract
Quantum phase transitions (QPTs) are a highly investigated phenomenon in
nuclear physics, both theoretically and experimentally, where many rare isotope
beam facilities investigate a plethora of nuclei in order to understand their
evolution in shape and shape coexistence that includes multiple shell model
configurations. In this talk I will discuss my attempt to understand such
phenomenon using algebraic frameworks. Specifically, I will present the
interacting boson model (IBM) for even-even nuclei. This model allows one to
investigate a vast array of phenomena with a great insight on the symmetry
structure of the nucleus and at a low computational cost. Using an extension
of this framework to multiple configurations named the IBM with configuration
mixing (IBM-CM), I will present my work on the chain of zirconium isotopes
(Z=40) with mass numbers A=92-110 and the manifestation of the new notion of
intertwined quantum phase transitions (IQPTs). IQPT is a situation where a QPT
involving a crossing of two configurations is accompanied by a shape evolution
of each configuration with its own separate QPT. Furthermore, I will focus on
my ongoing project developed at Yale, introducing a novel model for
configuration mixing in odd-mass nuclei, termed the interacting boson-fermion
model with configuration mixing (IBFM-CM). Using this framework, I will present
my work on the odd-mass niobium isotopes (Z=41) with mass numbers A=93-103 and
the manifestation of IQPTs within this chain of isotopes. To conclude, I will
provide a brief overview of my other ongoing projects and some prospective ones
at the Grand Accelerateur National d'Ions Lourds (GANIL).
nuclear physics, both theoretically and experimentally, where many rare isotope
beam facilities investigate a plethora of nuclei in order to understand their
evolution in shape and shape coexistence that includes multiple shell model
configurations. In this talk I will discuss my attempt to understand such
phenomenon using algebraic frameworks. Specifically, I will present the
interacting boson model (IBM) for even-even nuclei. This model allows one to
investigate a vast array of phenomena with a great insight on the symmetry
structure of the nucleus and at a low computational cost. Using an extension
of this framework to multiple configurations named the IBM with configuration
mixing (IBM-CM), I will present my work on the chain of zirconium isotopes
(Z=40) with mass numbers A=92-110 and the manifestation of the new notion of
intertwined quantum phase transitions (IQPTs). IQPT is a situation where a QPT
involving a crossing of two configurations is accompanied by a shape evolution
of each configuration with its own separate QPT. Furthermore, I will focus on
my ongoing project developed at Yale, introducing a novel model for
configuration mixing in odd-mass nuclei, termed the interacting boson-fermion
model with configuration mixing (IBFM-CM). Using this framework, I will present
my work on the odd-mass niobium isotopes (Z=41) with mass numbers A=93-103 and
the manifestation of IQPTs within this chain of isotopes. To conclude, I will
provide a brief overview of my other ongoing projects and some prospective ones
at the Grand Accelerateur National d'Ions Lourds (GANIL).