91,752 research outputs found
A Holographic Bound for D3-Brane
In this paper, we will regularize the holographic entanglement entropy,
holographic complexity and fidelity susceptibility for a configuration of
D3-branes. We will also study the regularization of the holographic complexity
from action for a configuration of D3-branes. It will be demonstrated that for
a spherical shell of D3-branes the regularized holographic complexity is always
greater than or equal to than the regularized fidelity susceptibility.
Furthermore, we will also demonstrate that the regularized holographic
complexity is related to the regularized holographic entanglement entropy for
this system. Thus, we will obtain a holographic bound involving regularized
holographic complexity, regularized holographic entanglement entropy and
regularized fidelity susceptibility of a configuration of D3-brane. We will
also discuss a bound for regularized holographic complexity from action, for a
D3-brane configuration.Comment: Accepted in EPJ
The Friedmann equation in modified entropy-area relation from entropy force
According to the formal holographic principle, a modification to the
assumption of holographic principle in Verlinder's investigation of entropy
force is obtained. A more precise relation between entropy and area in the
holographic system is proposed. With the entropy corrections to the
area-relation, we derivate Newton's laws and Einstein equation with a static
spherically symmetric holographic screen. Furthermore we derived the correction
terms to the modified Friedmann equation of the FRW universe starting from the
holographic principle and the Debye model.Comment: Mod. Phys. Lett. A26, 489-500 (2011
S-parameter, Technimesons, and Phase Transitions in Holographic Tachyon DBI Models
We investigate some phenomenological aspects of the holographic models based
on the tachyon Dirac-Born-Infeld action in the AdS space-time. These
holographic theories model strongly interacting fermions and feature dynamical
mass generation and symmetry breaking. We show that they can be viewed as
models of holographic walking technicolor and compute the Peskin-Takeuchi
S-parameter and masses of lightest technimesons for a variety of the tachyon
potentials. We also investigate the phase structure at finite temperature and
charge density. Finally, we comment on the holographic Wilsonian RG in the
context of holographic tachyon DBI models
Entanglement Entropy and Complexity for One-Dimensional Holographic Superconductors
Holographic superconductor is an important arena for holography, as it allows
concrete calculations to further understand the dictionary between bulk physics
and boundary physics. An important quantity of recent interest is the
holographic complexity. Conflicting claims had been made in the literature
concerning the behavior of holographic complexity during phase transition. We
clarify this issue by performing a numerical study on one-dimensional
holographic superconductor. Our investigation shows that holographic complexity
does not behave in the same way as holographic entanglement entropy.
Nevertheless, the universal terms of both quantities are finite and reflect the
phase transition at the same critical temperature.Comment: 8 pages, improved version accepted by PL
Reconstructing the potentials for the quintessence and tachyon dark energy, from the holographic principle
We propose an holographic quintessence and tachyon models of dark energy. The
correspondence between the quintessence and tachyon energy densities with the
holographic density, allows the reconstruction of the potentials and the
dynamics for the quintessence and tachyon fields, in flat FRW background. The
proposed infrared cut-off for the holographic energy density works for two
cases of the constant : for we reconstructed the holographic
quintessence model in the region before the crossing for the EoS
parameter. The cosmological dynamics for was also reconstructed for
the holographic quintessence and tachyon models.Comment: 21 pages, 18 figures, 2 table
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