IPM Calendar 
Sunday 24 September 2023   Today  
Events for day: Tuesday 28 December 2021    
           14:00 - 15:00     Weekly Seminar
HEPCo Group
A glimpse on two Higgs doublet models at forward experiments


The (g ? 2)? anomaly indicates that the second generation of leptons should have new interactions beyond the standard model. The high flux of ? and ? ? at the forward ?? experiments such as FASER? and SND@LHC makes them suitable setups to search for new interactions of the second generation leptons. In this talk, I introduce a model in which the second generation left-handed leptons couple to a new right-handed neutrino, N, and a new Higgs doublet which also couples to the quarks. The scattering of high energy ?? off nuclei can produce N. Discovering even a single such event can be a harbinger to look for the spectacular signals of the new Hi ...

           16:00 - 17:00     IPM Holography virtual seminar
Aspects of Holographic Entanglement Entropy for $Tbar{T}$-deformed CFTs


Abstract: We use the holographic methods to calculate the entanglement entropy for field theories modified by $Tbar{T}$ insertion. Based on the available holographic proposals, this calculation reduces to the holographic computations in AdS with finite cut-off. We perform a direct holographic calculation of the entanglement entropy for two-dimensional deformed theory. By direct we mean the evaluation of the gravitational action in the bulk spacetime which has been reconstructed from a dual CFT$_2$\ on $n$-sheeted Riemann surface as a finite cut-off boundary. We also apply Ryu-Takayanagi's prescription to investigate the most general structure ...

           16:30 - 18:00     Algebraic Geometry Biweekly Webinar
Postulation of Generic Lines and a Multiple Line in P^n


A well-known theorem by Hartshorne and Hirschowitz states that a generic configuration of lines has good postulation. So what about non-reduced configurations? Can adding a multiple line to the configuration still preserve it?s good postulation? This is the question we mainly deal with in this talk. In the first part of the talk we introduce the postulation problem for projective schemes, then we discuss the problem for the family of schemes supported on generic linear configurations, which are the ones of particular interest. In the second part of the talk we focus on the postulation of generic lines and one multiple line in projective space ...