IPM Calendar 
Thursday 28 March 2024   Today  
Events for day: Wednesday 11 April 2018    
           13:30 - 15:00     Weekly Seminar
Study of scalar cosmological perturbation in a non-local gravity model

School
ASTRONOMY

Although the standard model of cosmology can explain the current status of the cosmos and interpret most of the cosmological observations, the existence of cosmological constant is one of the main challenges and shortcomings of the model. One of the important goals of adding the cosmological constant to the Einstein's theory of general relativity is to justify the current accelerated expansion of the universe. So, many attempts have been done to reproduce this accelerated expansion without considering the cosmological constant. In this study, a non-local gravity model will be introduced which can reproduce the accelerated expansion without co ...

           15:00 - 16:00     Weekly Seminar
Constraining the Monochromatic Gamma-Rays from Dark Matter Annihilation by the LHC

School
PARTICLES AND ACCELERATORS

A plethora of evidence puts forward the existence of the new particle(s) responsible for the missing mass in the Universe, coined dark matter(DM). The conventional channels of DM searches at the LHC are the DM plus a hadronic/weak production, such as monojet search. On the other hand, the installation of forward detectors in the CMS and ATLAS turn the LHC into an effective photon-photon collider. The elastic scattering of the beam protons via the emission of photons, which can be identified by tagging the intact protons in the forward detectors provides a powerful diagnostic of the central production of new particles through photon-photon ann ...

           15:30 - 17:00     Geometry and Topology Weekly Seminar
Cohomogeneity One Manifolds

School
MATHEMATICS

we present a review on the most symmetric non-homogeneous manifolds known as cohomogeneity one manifolds, i.e. pseudo-Riemannian $G$-manifolds where $G$ is a closed connected Lie subgroup of the isometry group and the lowest codimension of the orbits under the natural action of $G$ is one. Geometric and topological properties of such manifolds, their orbit spaces and orbit structures will be described and there will be a comparison between Riemannian and non-Riemannian $G$-manifolds to illustrate some basic differences. ...

           16:30 - 18:00     Physics Colloquium
Searching for dark matter: from simulations to detection

School
PHYSICS

Farmanieh building ...