163,789 research outputs found
Nonlinear Electromagnetic Quasinormal Modes and Hawking Radiation of A Regular Black Hole with Magnetic Charge
Based on a regular exact black hole (BH) from nonlinear electrodynamics (NED)
coupled to General Relativity, we investigate its stability of such BH through
the Quasinormal Modes (QNMs) of electromagnetic (EM) field perturbation and its
thermodynamics through Hawking radiation. In perturbation theory, we can deduce
the effective potential from nonlinear EM field. The comparison of potential
function between regular and RN BHs could predict their similar QNMs. The QNMs
frequencies tell us the effect of magnetic charge , overtone , angular
momentum number on the dynamic evolution of NLED EM field. Furthermore we
also discuss the cases near extreme condition of such magnetically charged
regular BH. The corresponding QNMs spectrum illuminates some special properties
in the near-extreme cases. For the thermodynamics, we employ Hamilton-Jacobi
method to calculate the near-horizon Hawking temperature of the regular BH and
reveal the relationship between classical parameters of black hole and its
quantum effect
What are the Latest Trends in Career Pathing Models as Well as the Most Effective Ways to Accelerate High Potential Development?
The war for talent is raging, making attracting, retaining, and developing high-performers more challenging than ever. Many of the “Baby Boomer” executives will be retiring in the near future, and only 15% of organizations in North America and Asia believe they have sufficient qualified successors for key positions. Additionally, 25% of surveyed organizations said they fail to keep top-performers, further illustrating the urgency and importance of the need to design optimal programs for developing future leaders. Thus, the content below will provide insight into the factors that make development program for “high potentials” successful
Soft Gluon Resummation Effects in Single Graviton Production at the CERN Large Hadron Collider in the Randall-Sundrum Model
We study QCD effects in single graviton production at the CERN Large Hadron
Collider (LHC) in the Randall-Sundrum (RS) Model. We present in detail the
complete next-to-leading order (NLO) QCD corrections to the inclusive total
cross sections. The NLO QCD corrections enhance significantly the total cross
sections and decrease efficiently the dependence of the total cross sections on
the factorization and renormalization scales. We also examine the uncertainty
of the total cross sections due to the parton distribution function (PDF)
uncertainties. For the differential cross sections on the transverse momentum
() of the graviton, within the CSS resummation formalism, we resum the
logarithmically-enhanced terms at small to all orders up to NLO
logatithmic accuracy. Combined with the fixed order calculations, we give
consistent predictions for both small and large .Comment: 26 pages, 13 figures; minor changes and misprints corrected; version
to appear in PR
Thrust distribution in Higgs decays at the next-to-leading order and beyond
We present predictions for the thrust distribution in hadronic decays of the
Higgs boson at the next-to-leading order and the approximate
next-to-next-to-leading order. The approximate NNLO corrections are derived
from a factorization formula in the soft/collinear phase-space regions. We find
large corrections, especially for the gluon channel. The scale variations at
the lowest orders tend to underestimate the genuine higher order contributions.
The results of this paper is therefore necessary to control the perturbative
uncertainties of the theoretical predictions. We also discuss on possible
improvements to our results, such as a soft-gluon resummation for the 2-jets
limit, and an exact next-to-next-to-leading order calculation for the
multi-jets region
What-and-Where to Match: Deep Spatially Multiplicative Integration Networks for Person Re-identification
Matching pedestrians across disjoint camera views, known as person
re-identification (re-id), is a challenging problem that is of importance to
visual recognition and surveillance. Most existing methods exploit local
regions within spatial manipulation to perform matching in local
correspondence. However, they essentially extract \emph{fixed} representations
from pre-divided regions for each image and perform matching based on the
extracted representation subsequently. For models in this pipeline, local finer
patterns that are crucial to distinguish positive pairs from negative ones
cannot be captured, and thus making them underperformed. In this paper, we
propose a novel deep multiplicative integration gating function, which answers
the question of \emph{what-and-where to match} for effective person re-id. To
address \emph{what} to match, our deep network emphasizes common local patterns
by learning joint representations in a multiplicative way. The network
comprises two Convolutional Neural Networks (CNNs) to extract convolutional
activations, and generates relevant descriptors for pedestrian matching. This
thus, leads to flexible representations for pair-wise images. To address
\emph{where} to match, we combat the spatial misalignment by performing
spatially recurrent pooling via a four-directional recurrent neural network to
impose spatial dependency over all positions with respect to the entire image.
The proposed network is designed to be end-to-end trainable to characterize
local pairwise feature interactions in a spatially aligned manner. To
demonstrate the superiority of our method, extensive experiments are conducted
over three benchmark data sets: VIPeR, CUHK03 and Market-1501.Comment: Published at Pattern Recognition, Elsevie
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