Superstring theories at low energy limit are described by the corresponding supergravities, and their non-perturbative D-brane/O-plane excitations are described by DBI and WZ actions. Higher derivative corrections to these effective actions...

It has been speculated in the literature that the effective actions of string theories at any order of $\\\\alpha\\'$ should be invariant under the Buscher rules plus their higher covariant derivative corrections. This may be used as a...

Recently a modification of the tachyon DBI action has been proposed in which the tachyon carries the internal CP matrix \\\\\\\\sigma_1 and \\\\\\\\sigma_2. In this paper, we find the momentum expansion of the disk level S-matrix element of four...

The first international workshop on Mining Actionable Insights from Social Networks (MAISoN'17) is to be held on February 10, 2017; co-located with the Tenth ACM International Web Search and Data Mining (WSDM) Conference in Cambridge, UK. MAISoN'17...

We study a dark energy scenario in the presence of a tachyon field $\\\\\\\\phi$ with potential $V(\\\\\\\\phi)$ and a barotropic perfect fluid. The cosmological dynamics crucially depends on the asymptotic behavior of the ...

We study the variation of the effective fine structure constant alpha for Dirac-Born-Infeld (DBI) type dark energy models. The DBI action based on string theory naturally gives rise to a coupling between gauge fields and a scalar field responsible...

are in perfect agreement with the non-abelian generalization of the tachyon DBI action in which the tachyon potential is $V(T)=1+\\\\pi\\\\alpha\\' m^2T^2+\\\\frac{1}{2!}(\\\\pi\\\\alpha\\' m^2T^2)^2+...$ where $m^2=-1/(2\\\\alpha\\')$ is the mass of tachyon...

Images and videos have become ubiquitous in every aspects of life due to the growing digital recording devices. It has encouraged the development of algorithms that can analyze video content and perform human action recognition. This paper...