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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：On nonlinear Schrodinger-type equations with nonlinear damping
非线性阻尼 非线性 薛定谔型方程
2023/4/25
In this talk，I will introduce equations of nonlinear Schrodinger-type augmented by nonlinear damping terms. The nonlinear damping can prevent finite time blow-up in several situations. The solution of...
Rice U. Physicists Discover New Type Of Quantum Material（图）
Rice U. Physicists New Type Of Quantum Material
2018/1/10
U.S. and European physicists searching for an explanation for high-temperature superconductivity were surprised when their theoretical model pointed to the existence of a never-before-seen material in...
Type-1.5 superconductivity in multiband systems: the e ects of interband couplings
Superconductors gold landau theory parameters whirlpool
2014/12/18
In contrast to single-component superconductors, which are described at the level of Ginzburg- Landau theory by a single parameter and are divided in type-I < 1= p 2 and type-II > 1= p 2 classes...
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...
Type-1.5 superconductivity in two-band systems
Gold landau parameters MathML source separation thermodynamics vortex-induced regime vortex lattice
2014/12/18
In the usual Ginzburg–Landau theory the critical value of Ginzburg–Landau parameter View the MathML source separates regimes of type-I and type-II superconductivity. The latter regime possess thermody...
Generalized EMP and Nonlinear Schrodinger-type Reformulations of Some Scaler Field Cosmological Models
Friedmann-Lemaitre-Robertson-Walker Perfect fluid, Schrodinger equation
2014/12/8
We show that Einstein’s gravitational field equations for the Friedmann- Robertson-Lemaître-Walker (FRLW) and for two conformal versions of the Bianchi I and Bianchi V perfect fluid scalar field ...
Ballistic transport in graphene suggests new type of electronic device（图）
graphene electronic device
2014/3/19
Using electrons more like photons could provide the foundation for a new type of electronic device that would capitalize on the ability of graphene to carry electrons with almost no resistance even at...
The effects of Co-Ti co-doping on the magnetic,electrical,and magnetodielectric behaviors of M-type barium hexaferrites
materials science barium coercive force doped materials electrical properties ferrites ferroelectric materials magnetic fields magnetic properties magnetization
2016/12/2
Magnetic, electrical and magnetodielectric properties have been studied in Co-Ti co-doped M-type hexaferrite BaCo x Ti x Fe12-2x O19 (x = 0 65 4). With the incorporation of Co-Ti, both their ferromagn...
Forced oscillations of a body attached to a viscoelastic rod of fractional derivative type
fractional derivative distributed-order fractional derivative fractional viscoelastic material forced oscillations of a rod
2012/7/11
We study forced oscillations of a rod with a body attached to its free end so that the motion of a system is described by two sets of equations, one of integer and the other of the fractional order. T...
Solving the inverse problem of high numerical aperture focusing using Slepian-type vector fields
High numerical aperture focusing Vector diffraction theory Inverse problem Slepian’s concentration problem
2012/5/29
A technique using vector Slepian harmonics and multipole fields is presented for a general treatment of the inverse problem of high numerical aperture focusing. A prescribed intensity distribution or ...
Parametric Optomechanical Oscillations in Two-Dimensional Slot-Type High-Q Photonic Crystal Cavities
Parametric Optomechanical Oscillations Two-Dimensional Slot-Type High-Q Photonic Crystal Cavities Optics
2012/5/29
We experimentally demonstrate an optomechanical cavity based on an air-slot photonic crystal cavity with optical quality factor Qo=4.2\times10^4 and a small modal volume of 0.05 cubic wavelengths. The...
Effect of Position-dependent Mass on Dynamical Breaking of Type B and Type X_2 N-fold Supersymmetry
N-fold supersymmetry Position-dependent mass Dynamical symmetry breaking Quasisolvability Exceptional orthogonal polynomials
2012/4/23
We investigate effect of position-dependent mass profiles on dynamical breaking of N-fold supersymmetry in several type B and type X_2 models. We find that N-fold supersymmetry in rational potentials ...
Knot Universes in Bianchi Type I Cosmology
Knot Universes Bianchi Type I Cosmology General Physics
2012/4/19
We investigate the trefoil and figure-eight knot universes from Bianchi-type I cosmology. In particular, we construct several concrete models describing the knot universes related to the cyclic univer...
On the Complete Integrability of a One Generalized Riemann Type Hydrodynamic System
Lax type integrability Riemann type hydrodynamic system symplectic method differential-algebraic approach
2012/4/26
The complete integrability of a generalized Riemann type hydrodynamic system is studied by means of symplectic and differential-algebraic tools. A compatible pair of polynomial Poissonian structures, ...
Effect of Impurities on the Superheating field of Type II superconductors
Impurities the Superheating field Type II superconductors
2012/2/27
We consider the effect of nonmagnetic and magnetic impurities on the superheating field $H_s$ in a type-II superconductor. We solved the Eilenberger equations, which take into account the nonlinear pa...