Classical solutions of the leading-logarithm approximation with nontrivial topology
نویسندگان
چکیده
منابع مشابه
The Effective Weak Hamiltonian beyond the Leading-logarithm Approximation*
The effective nonleptonic weak Hamiltonian is examined beyond the leading-logarithm approximation. In the AS=l, AC=1 part of the Hamiltonian no significant contribution is found. In the AS=l, AC=0 sector coefficients of the "penguin" operators depend strongly on added corrections. The momentum subtraction scheme has been used in the calculation. The independence of the result on the renormaliza...
متن کاملOgy with Nontrivial Topology
The original Casimir effect results from the difference in the vacuum energies of the electromagnetic field, between that in a region of space with boundary conditions and that in the same region without boundary conditions. In this paper we develop the theory of a similar situation, involving a scalar field in spacetimes with negative spatial curvature.
متن کاملNearly flatbands with nontrivial topology.
We report the theoretical discovery of a class of 2D tight-binding models containing nearly flatbands with nonzero Chern numbers. In contrast with previous studies, where nonlocal hoppings are usually required, the Hamiltonians of our models only require short-range hopping and have the potential to be realized in cold atomic gases. Because of the similarity with 2D continuum Landau levels, the...
متن کاملUnifying the Fixed Order Evolution of Fragmentation Functions with the Modified Leading Logarithm Approximation
An approach which unifies the Double Logarithmic Approximation at small x and the leading order DGLAP evolution of fragmentation functions at large x is presented. This approach reproduces exactly the Modified Leading Logarithm Approximation, but is more complete due to the degrees of freedom given to the quark sector and the inclusion of the fixed order terms. We find that data from the larges...
متن کاملExistence of Steady Stable Solutions for the Ginzburg-landau Equation in a Domain with Nontrivial Topology
Let N ≥ 2 and Ω ⊂ RN be a bounded domain with boundary ∂Ω. Let Γ ⊂ ∂Ω be closed. Our purpose in this paper is to consider the existence of stable solutions u ∈ H1(Ω,C) of the Ginzburg-Landau equation ⎧⎨ ⎩ −∆u(x) = λ(w2 0(x)− |u| )u in Ω, u = g on ∂Ω\Γ, ∂u ∂ν = 0 on Γ where λ > 0, w0 ∈ C2(Ω,R+) and g ∈ C2(∂Ω\Γ) such that |g(x)| = w0(x) on ∂Ω\Γ.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review D
سال: 1983
ISSN: 0556-2821
DOI: 10.1103/physrevd.27.464