Finite-size effects for multi-magnon states
نویسندگان
چکیده
منابع مشابه
Finite size giant magnon
The quantization of the giant magnon away from the infinite size limit is discussed. We argue that this quantization inevitably leads to string theory on a ZM -orbifold of S . This is shown explicitly and examined in detail in the near plane-wave limit. A significant amount of work on the AdS/CFT correspondence [1],[2],[3] has been inspired the idea that the planar limit of N = 4 Yang-Mills the...
متن کاملReflecting Magnon Bound States
In N = 4 super Yang-Mills spin chain, we compute reflection amplitudes of magnon bound-state off giant graviton. We first compute the reflection amplitude off Y = 0 brane boundary and compare it with the scattering amplitude between two magnon bound-states in the bulk. We find that analytic structure of the two amplitudes are intimately related each other: the boundary reflection amplitude is a...
متن کاملFinite size corrections within the continuum limit for quantum spins: two-magnon bound states in 1D Heisenberg ferromagnet
A continuum medium approach is proposed to describe the finite size dependent effects for the 1D isotropic Heisenberg ferromagnet. The results are compared to the exact Bethe ansatz solution for the finite chain. The approach is shown to adequately account for the behaviour of the eigenfunctions and eigenenergies. The continuum is obtained by integration in Fourier space via introduction of cut...
متن کاملIndependent magnon states on magnetic polytopes
For many spin systems with constant isotropic antiferromagnetic nextneighbour Heisenberg coupling the minimal energies Emin(S) form a rotational band, i. e. depend approximately quadratically on the total spin quantum number S, a property which is also known as Landé interval rule. However, we find that for certain coupling topologies, including recently synthesised icosidodecahedral structures...
متن کاملSupercurrent States in 1d Finite-size Rings
We consider topological supercurrent excitations (SC) in 1D mesoscopic rings. Under certain conditions such excitations are well-defined except for (i) a tunneling between resonating states with clockwise and anti-clockwise currents, which may be characterized by the amplitude ∆, and (ii) a decay of SC assisted by phonons of the substrate, both effects being macroscopically small. Our approach ...
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: Journal of High Energy Physics
سال: 2008
ISSN: 1029-8479
DOI: 10.1088/1126-6708/2008/09/025