Wednesday 20 February 2019 |

Events for day: Wednesday 19 December 2018 |

11:00 - 13:00 Theoretical Neuroscience Journal ClubLandau-Ginzburg theory of cortex dynamics: Scale-free avalanches emerge at the edge of synchronization School COGNITIVE SCIENCES Venue: School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Opposite the ARAJ, Artesh Highway, Tehran, Iran ... 13:00 - 17:00 SeminarForeign Influence Operations On Social Media: An Overview of Academic Research School COGNITIVE SCIENCES Abstract: Venue: School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM), Opposite the ARAJ, Artesh Highway, Tehran, Iran on map* To join the mailing list: Send an empty email to: scs at ipm dot ir on the subject of: #join ... 13:30 - 15:00 Weekly SeminarRescuing Single Field Inflation from the Swampland School ASTRONOMY The difficulty of building metastable vacua in string theory has led some to conjecture that, in the string theory landscape, potentials satisfy.This condition, which is supported by different explicit constructions, suggests that the EFTs which lead to metastable de-Sitter vacua belong to what is dubbed as swampland. This condition endangers the paradigm of single field inflation, as the potentials consistent that avoid the swampland criteria produce too much gravitational B-modes. However, the predictions of inflation are dependent on the initial conditions for perturbations. In this talk, first, I will show how in some theories like the Ex ... 14:00 - 15:00 Weekly SeminarCondensed Matter and Statistical Physics Group Influence of active and passive actin gel on the formation and dynamics of the protrusion School PHYSICS Seminar Room (classroom A), Farmanieh Building, IPM ... 14:00 - 15:00 Weekly SeminarInfluence of active and passive actin gel on the formation and dynamics of the protrusion School NANO SCIENCES Influence of active and passive actin gel on the formation and dynamics of the protrusionAbstract:The forces that arise from the actin cortex play a crucial role in determining the membrane deformation. These include protrusive forces due to actin polymerization, pulling forces due to transient attachment of actin filaments to the membrane, retrograde flow powered by contraction of actomyosin network, and adhesion to the extracellular matrix. Here we present a theoretical model for membrane deformation resulting from the feedback between the membrane shape and the forces acting on the membrane. We model the m ... 15:00 - 16:00 Weekly SeminarConstraining secret gauge interactions of neutrinos by meson decay and short-baseline neutrino experiments School PARTICLES AND ACCELERATORS Abstract: Secret coupling of neutrinos to a new light vector boson, Z', with a mass smaller than 100 MeV is motivated within a myriad of scenarios which are designed to explain various anomalies in particle physics and cosmology. This interaction can also lead to new decay modes for charged mesons, thus the interaction can be probed in meson decay experiments such as PIENU and NA62, and short-baseline accelerator neutrino experiments such as the near detector of DUNE, since neutrino is produced from pion and kaon decays. Larak Seminar Room 15:30 - 17:00 Geometry and Topology Weekly SeminarAn Algorithm for Contractability of Closed Curves on the Boundary of 3-manifolds School MATHEMATICS The problem of deciding contractability of closed curves in a topological space is a fundamental problem in (computational) algebraic topology. In 3-manifolds, for simple curves on the boundary, the normal surface theory, as developed by Haken can be used to decide contractability. We present the first algorithm for this problem for closed curves on the boundary of 3-manifolds with self-intersections. The algorithm is based on the proof of the well-known Loop theorem and runs in exponential time. ... |