479 research outputs found
Domain wall brane in a reduced Born-Infeld- theory
The Born-Infeld theory is reduced from the Born-Infeld determinantal
gravity in Weitzenb\"ock spacetime. We investigate a braneworld scenario in
this theory and obtain an analytic domain wall solution by utilizing the
first-order formalism. The model is stable against the linear tensor
perturbation. It is shown that the massless graviton is localized on the brane,
but the continuous massive gravitons are non-localized and will generate a tiny
correction with the behavior of to the Newtonian potential.
The four-dimensional teleparallel gravity is recovered as an effective infrared
theory on the brane. As a physical application, we consider the
(quasi-)localization property of spin-1/2 Dirac fermion in this model.Comment: 9 pages, 2 figures, published versio
Mixed State Entanglement for Holographic Axion Model
We study the mixed state entanglement in a holographic axion model. We find
that the holographic entanglement entropy (HEE), mutual information (MI) and
entanglement of purification (EoP) exhibit very distinct behaviors with system
parameters. The HEE exhibits universal monotonic behavior with system
parameters, while the behaviors of MI and EoP relate to the specific system
parameters and configurations. We find that MI and EoP can characterize mixed
state entanglement better than HEE since they are less affected by thermal
effects. Moreover, we argue that EoP is more suitable for describing mixed
state entanglement than MI. Because the MI of large configurations are still
dictated by the thermal entropy, while the EoP will never be controlled only by
the thermal effects.Comment: 20 pages, 13 figure
- …