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Constraints on Enhanced Dark Matter Annihilation from IceCube Results
Dark matter Neutrinos Neutrino Telscopes
2011/10/18
Excesses on electromagnetic fluxes measured by ATIC, and the PAMELA and Fermi-LAT telescopes can be explained by dark matter annihilation in our Galaxy. However, this requires large boosts on the dark...
A Two-Tiered Correlation of Dark Matter with Missing Transverse Energy: Reconstructing the Lightest Supersymmetric Particle Mass at the LHC
Correlation Dark Matter Missing Transverse Energy Reconstructing Lightest Supersymmetric
2011/10/18
We suggest that non-trivial correlations between the dark matter particle mass and collider based probes of missing transverse energy H_T^miss may facilitate a two tiered approach to the initial disco...
DAMA and CoGeNT without astrophysical uncertainties
DAMA CoGeNT without astrophysical uncertainties
2011/10/18
The CoGeNT collaboration has reported evidence of an annual modulation in its first fifteen months of data. Here we compare the amplitude and phase of this signal to the modulation observed by the DAM...
A sufficient condition for de Sitter vacua in type IIB string theory
moduli stabilization string vacua ux compacti cations
2011/10/18
We derive a sufficient condition for realizing meta-stable de Sitter vacua with small positive cosmological constant within type IIB string theory flux compactifications with spontaneously broken supe...
Vainshtein mechanism in Gauss-Bonnet gravity and Galileon aether
Vainshtein mechanism Gauss-Bonnet gravity Galileon aether
2011/10/18
We derive field equations of Gauss-Bonnet gravity in 4 dimensions after dimensional reduction of the action and demonstrate that in this scenario Vainshtein mechanism operates in the flat spherically ...
Conformal invariance of curvature perturbation
Conformal invariance curvature perturbation
2011/10/18
We show that in the single component situation all perturbation variables in the comoving gauge are conformally invariant to all perturbation orders. Generally we identify a special time slicing, the ...
Quantum fluctuations in planar domain-wall space-times: A possible origin of primordial preferred direction
Quantum fluctuations planar domain-wall space-times possible origin primordial preferred direction
2011/10/18
We study the gravitational effects of a planar domain wall on quantum fluctuations of a massless scalar field during inflation. By obtaining an exact solution of the scalar field equation in de Sitter...
The Age-Metallicity Relation in the Thin Disk of the Galaxy
metallicity relation thin disk of the Galaxy
2011/9/30
HST trigonometric distances, photometric metallicities, isochronic ages from the second revised version of the Geneva--Copenhagen survey, and uniform spectroscopic Fe and Mg abundances from our master...
Electroweak Baryogenesis and Dark Matter with an approximate R-symmetry
Electroweak Baryogenesis Dark Matter with approximate R-symmetry
2011/10/18
It is well known that R-symmetric models dramatically alleviate the SUSY flavor and CP problems. We study particular modifications of existing R-symmetric models which share the solution to the above ...
Global fits of the cMSSM including the first LHC and XENON100 data
Global fits cMSSM including first LHC XENON100 data
2011/10/18
We present updated global fits of the constrained Minimal Supersymmetric Standard Model (cMSSM), including the most recent constraints from the ATLAS and CMS detectors at the LHC, as well as the most ...
Surface tension in the cold and dense chiral transition and astrophysical applications
Surface tension old chiral transition astrophysical applications
2011/10/18
The surface tension of cold and dense QCD phase transitions has appeared recently as a key ingredient in different astrophysical scenarios, ranging from core-colapse supernovae explosions to compact s...
Time-varying G in shift-symmetric scalar-tensor theories with a Vainshtein mechanism
shift-symmetric scalar-tensor theories Vainshtein mechanism
2011/10/18
We show that the current bounds on the time variation of the Newton constant G can put severe constraints on many interesting scalar-tensor theories which possess a shift symmetry and a nonminimal mat...
X-type and Y-type junction stability in domain wall networks
junction stability domain wall networks
2011/10/18
We develop an analytic formalism that allows one to quantify the stability properties of X-type and Y-type junctions in domain wall networks in two dimensions. A similar approach might be applicable t...
Entropic Force Scenarios and Eternal Inflation
Entropic Force Scenarios Eternal Inflation
2011/10/18
We examine various entropic inflation scenarios, under the light of eternality. After describing the inflation realization and the normal condition for inflation to last at the background level, we in...
Fast Timing Analysis of Cygnus X-1 using SPI on board INTEGRAL
Analysis Cygnus board INTEGRAL
2011/9/29
For the very first time, we report the high frequency analysis of Cyg X-1 up to hard X-ray using SPI on-board INTEGRAL. After analyzing the possible contribution fromthe background, and using INTEGRAL...