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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Global strong solutions to the two-dimensional radially symmetric compressible MHD
二维径向对称 可压缩 磁流体动力学 全局强解
2023/12/11
In this talk, I will present our recent result the 2D radially symmetric compressible MHD with density-dependent viscosity. Under the condition of beta>1, we prove the global existence of the radially...
Type-1.5 Superconducting State from an Intrinsic Proximity Effect in Two-Band Superconductors,
Superconducting vortex multiband superconductors leading to a qualitative change attractive and reaction of low magnetic field eddy
2014/12/18
We show that in multiband superconductors, even an extremely small interband proximity effect can lead to a qualitative change in the interaction potential between superconducting vortices by producin...
Highly tunable spin-dependent electron transport through carbon atomic chains connecting two zigzag graphene nanoribbons
Highly tunable spin-dependent electron transport carbon atomic chains zigzag graphene nanoribbons
2012/2/27
Motivated by recent experiments of successfully carving out stable carbon atomic chains from graphene [Meyer et al. Nature (London) 454, 319 (2008); Jin et al. Phys. Rev. Lett. 102, 205501 (2009)] we ...
Sub-linear radiation power dependence of photo-excited resistance oscillations in two-dimensional electron systems
Sub-linear radiation power dependence two-dimensional electron systems
2010/11/25
We find that the amplitude of the Rxx radiation-induced magnetoresistance oscillations in
GaAs/AlGaAs system grows nonlinearly as A / P where A is the amplitude and the exponent
< 1. This strikin...
Determining the Critical Temperature and Number of Frozen Layers in a Two-Dimensional Bed of Vibrating Hard Spheres Using a Global Equation of State
Critical Temperature Number of Frozen Layers Two-Dimensional Bed of Vibrating Hard Spheres
2010/11/25
Using a global equation of state, empirically derived by Luding, we ac-curately model the density profile of a two-dimensional hard sphere system with diameter D and mass m under gravity with a given ...
Asymptotic analysis of stresses near a crack tip in a two dimensional colloidal packing saturated with liquid
Asymptotic analysis of stresses two dimensional colloidal
2010/11/24
The consolidation of colloidal particles in drying colloidal dispersions is in-uenced by various factors such as particle size and shape, and inter-particle potential. The capillary pressure induced b...
Eighth-order phase-field-crystal model for two-dimensional crystallization
Eighth-order phase-field-crystal model two-dimensional crystallization
2010/11/25
We present a derivation of the recently proposed eighth order phase field crystal model [Jaatinen et al. , Phys. Rev. E 80, 031602 (2009)] for the crystallization of a solid from an undercooled melt.
Lifshitz transition in two-dimensional spin-density wave models
Lifshitz transition two-dimensional spin-density wave models
2010/11/23
We argue that both pocket-disappearing and neck-disrupting types of Lifshitz transitions can be
realized in two-dimensional spin-density wave models for underdoped cuprates, and study both
types of ...
Polarons and Molecules in a Two-Dimensional Fermi Gas
Polarons Molecules Two-Dimensional Fermi Gas
2010/11/23
We study an impurity atom in a two-dimensional Fermi gas using variational wave functions for (i)an impurity dressed by particle-hole excitations (polaron) and (ii) a dimer consisting of the impurity ...
Orbital Order, Metal Insulator Transition, and Magnetoresistance-Effect in the two-orbital Hubbard model
Orbital Order Metal Insulator Transition Magnetoresistance-Effect
2010/11/19
We study the effects of temperature and magnetic field on a two-orbital Hubbard model within
dynamical mean field theory. We focus on the quarter filled system, which is a special point in the phase ...
Nucleon strange quark content from two-flavor lattice QCD with exact chiral symmetry
Nucleon strange quark content two-flavor lattice QCD exact chiral symmetry
2011/1/13
Strange quark content of the nucleon hN|¯ss|Ni is calculated in dynamical lattice QCD employing the overlap fermion formulation. For this quantity, exact chiral symmetry guaranteed by the Ginspar...
Diffusion-limited reactions on a two-dimensional lattice with binary disorder
Diffusion-limited reactions two-dimensional lattice with binary disorder
2010/11/19
Reaction-diffusion systems where transition rates exhibit quenched disorder are common in physical and chemical systems. We study pair reactions on a periodic two-dimensional lattice, including contin...
Relevance of Bose-Einstein Condensation to the Interference of Two Independent Bose Gases
Bose-Einstein Condensation Two Independent Bose Gases
2010/11/18
Interference of two independently prepared ideal Bose gases is discussed, on the basis of the idea of measurement-induced interference: even if the number of each gas is individually fixed finite and ...
Theory of the microwave induced zero resistance states in two-dimensional electron systems
the microwave induced zero resistance states two-dimensional electron systems
2010/11/18
The phenomena of the microwave induced zero resistance states (MIZRS) and the microwave
induced resistance oscillations (MIRO) were discovered in the ultraclean two-dimensional electron systems in 20...
Dynamical generation of phase-squeezed states in a two-component Bose-Einstein condensates
Dynamical generation of phase-squeezed states two-component Bose-Einstein condensates
2010/11/22
As an “input” state of a linear (Mach-Zehnder or Ramsey) interferometer, the phase-squeezed
state proposed by Berry and Wiseman exhibits the best sensitivity approaching to the Heisenberg
limit [Phy...