Giant Magnons under NS-NS and Melvin Fields
نویسنده
چکیده
We analyze the energy and angular momenta of the two-spin spiky string moving on the AdS3×S with NS-NS field. Due to the infinite boundary of the AdS spacetime the solution will extend to infinity and it appears the divergences. After adding the counter terms we then obtain the dispersion relation of the corresponding giant magnon and see how the background field produces the correction terms. We also investigate the energy and angular momentum of the one-spin spiky string moving on the Melvin-field deformed R × S. The dispersion relation of the corresponding deformed giant magnon is also obtained. We discuss some properties of the correction terms and their relations to the spin chain with deformations. E-mail: [email protected]
منابع مشابه
Exact eigenstates of highly frustrated spin lattices probed in high fields
Strongly frustrated antiferromagnets such as the magnetic molecule {Mo72Fe30}, the kagome, or the pyrochlore lattice exhibit a variety of fascinating properties like low-lying singlets, magnetization plateaus as well as magnetization jumps. During recent years exact many-body eigenstates could be constructed for several of these spin systems. These states become ground states in high magnetic f...
متن کاملPulsar Spin, Magnetic Fields, and Glitches
In the core of a canonical spinning magnetized neutron star(NS) a nearly uniform superfluid neutron vortex-array interacts strongly with a twisted array of magnetic flux-tubes threading the core’s superconducting protons. One consequence is that changes in NS-spin alter both arrays and also the magnetic field distribution on the surface of the surrounding crust. Among predicted consequences for...
متن کاملDynamics of nonequilibrium large-wave-vector magnons in MnF2.
A new method relying on optical generation, inductive detection, and separation of the magnon branches in an external magnetic field allows to determine the time constants of both intersublattice and intrasublattic processes relaxing large-wave-vector magnons in antiferromagnetic MnF2. We present a new method, utilizing a combination of optical generation, inductive detection, and the lifting o...
متن کاملThe Ka luża-Klein Melvin Solution in M-theory
We study some aspects of the Ka luża-Klein Melvin solution in M-theory. The associated magnetic field has a maximal critical value B = ±1/R where R is the radius of the compactification circle. It is argued that the Melvin background of type IIA with magnetic field B and of type 0A with magnetic field B = B−1/R are equivalent. Evidence for this conjecture is provided using a further circle comp...
متن کاملar X iv : 0 80 4 . 29 23 v 1 [ he p - th ] 1 8 A pr 2 00 8 On the giant magnon and spike solutions for strings on AdS 3 × S 3
We study solutions for the rotating strings on the sphere with a background NS-NS field and on the Anti-de-Sitter spacetime. We show the existence of magnon and single spike solutions on S in the presence of constant magnetic field as two limiting cases. We also study the solution for strings on AdS3× S with Melvin deformation. The dispersion relations among various conserved charges are shown ...
متن کامل