منابع مشابه
Excision of singularities by stringy domain walls
We study supersymmetric domain walls on S1 /Z2 orbifolds. The supergravity solutions in the bulk are given by the attractor equation associated with Calabi–Yau ~CY! spaces and have a naked space–time singularity at some uysu. We are looking for possibilities to cut off this singularity with the second wall by a stringy mechanism. We use the collapse of the CY cycle at uycu which happens before ...
متن کاملDomain Walls on the Brane
We show that all branes admit worldvolume domain wall solutions. We find one class of solutions for which the tension of the brane changes discontinuously along the domain wall. These solutions are not supersymmetric. We argue that there is another class of domain wall solutions which is supersymmetric. A particular case concerns supersymmetric domain wall solutions on IIB D-5-and NS-5-branes.
متن کاملObservational Constraints on Varying-Alpha Domain Walls
We consider the possibility that current hints of spatial variations of the fine structure constant at high redshift, based on VLT/UVES and Keck/HIRES observations, could be caused by a biased domain wall network described by a scalar field non-minimally coupled to the electromagnetic field. We show that in order to be responsible for the reported spatial variations of the fine structure consta...
متن کاملNarrow Magnonic Waveguides Based on Domain Walls.
The channeling of spin waves with domain walls in ultrathin ferromagnetic films is demonstrated theoretically and through micromagnetics simulations. It is shown that propagating excitations localized to the wall, which appear in the frequency gap of bulk spin wave modes, can be guided in curved geometries and propagate in close proximity to other channels. For Néel-type walls arising from a Dz...
متن کاملParamagnetic beads surfing on domain walls.
Paramagnetic beads electrostatically stabilized in aqueous solution are attracted toward domain walls in magnetic films. The position above the domain wall can be destabilized by realigning the beads magnetic moment with an external magnetic field. The destabilization may result in a steady state dissipative mode, where the beads surf on the slope of the moving domain wall. The technique could ...
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: Modern Physics Letters A
سال: 2011
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732311035572