Non-Equilibrium Critical Phenomena From Probe Brane Holography in Schr\"odinger Spacetime

We study the non-equilibrium steady-state phase transition from probe brane holography in $z=2$ Schr\"odinger spacetime. Concerning differential conductivity, a phase transition could occur in the conductor state. Considering constant current operator as the external field and the conductivity as an order parameter, we derive scaling behavior of order parameter near the critical point. We explore the critical exponents of the non-equilibrium phase transition in two different Schr\"odinger spacetimes, which originated $1)$ from supergravity, and $2)$ from AdS blackhole in the light-cone coordinates. Interestingly, we will see that even at the zero charge density, in our first geometry, the dynamical critical exponent of $z=2$ has a major effect on the critical exponents.Comment: 19 pages,10 figure

Investigation of supersymmetry on a strongly-interacting Majorana zero mode chain

Majorana fermions have been an important subject of research for the past few years in the field of condensed matter physics. After the realization of Majorana zero mode (MZM) in a Kitaev-chain, studies on the systems of many-body MZMs have been increased. Throughout the previous research, It was found that a few of the Majorana zero mode 1-dimensional chain models possess a Tricritical Ising model conformal field theory as a critical point in their phase diagram. These critical points are supersymmetric and the supersymmetric behaviour remains at a near vicinity of them in their neighbouring gapped phase. This particular behaviour of these 1D strongly-interacting MZMs is believed to be interesting since the system possesses a supersymmetric phase whilst having a nite correlation length in the gapped phase. In this thesis, we are going to investigate the supersymmetric realization of these models in their gapped phase, try to understand their excitation levels with the concept of soliton/antisoliton states and try to find traces of supersymmetry in this system of a condensed matter.Science, Faculty ofPhysics and Astronomy, Department ofGraduat

Factors Related to Reduced Bone Density in β-Thalassemia Major Patients: Mazandaran Thalassemia Registry

Introduction: OsteoPenia and osteoPorosis are known to be one of the main comPlications of β-thalassemia major (β-TM). The aim of this study was to determine the factors associated with decreased bone density of these Patients. Methods: Lumbar and femoral neck bone mineral density (BMD) in β-TM Patients characterized via Dual-energy X-ray absorPtiometry (DXA) to PinPoint the association of iron chelators, diabetes mellitus, serum ferritin above 3000 ng/mL, hemoglobin below 8 gr/dl, using hydroxyurea, liver siderosis and moderate to severe hePatic and cardiac siderosis with BMD. The information was collected from the thalassemia registry in 2019 and statistical analysis was Performed by STATA-13 software. Results: Out of 1959 ParticiPants with β-thalassemia major registered in the registry, 139 ones (7.09%) had bone mineral density (53 males and 86 females). The Prevalence of abnormal bone density in the lumbar and femoral neck was (52.48 to 47.66) 57.5 and (40.18 to 57.52) 48.85 Percent, resPectively. After adjusting for the effects of Possible interventions, the odds ratio of abnormal bone density in the Patients consuming hydroxyurea and deferasirox were 0.24 (0.03 to 1.73) and 0.25 (0.03 to 1.69), resPectively. The highest odds were 8.21 (0.18 to 360.22), and 6.72 (0.60 to 74.83) for moderate to severe cardiac and hePatic dePosition, resPectively. Conclusion: The Prevalence of osteoPenia and osteoPorosis is high among thalassemia major Patients. ConsumPtion of hydroxyurea and deferasirox is the most imPortant Protective factor and moderate to severe cardiac and hePatic siderosis are the most imPortant risk factors for abnormal bone density