IPM Calendar 
Monday 23 November 2020   Today  
Events for day: Thursday 19 November 2020    
           11:00 - 13:00     Commutative Algebra Webinar
Almost Gorenstein Property for Affine Semigroup Rings


The almost Gorenstein property appeared in the work of Barucci and Fr�oberg in the context of 1-dimensional analytical unramified rings. It was extended to 1- dimensional local rings by Goto, Matsuoka and Thi Phuong, and later on to rings of higher dimension by Goto, Takahashi and Taniguchi. Let R be a positively graded Cohen-Macaulay K-algebra with canonical module ωR. We let a = − min{k ∈ Z : (ωR)k 6= 0}, which is also known as the a-invariant of R. R is called (graded) almost Gorenstein if there exists an exact sequence of graded R-modules 0 → R → ωR(−a) → E → 0, where ...

           11:00 - 12:00     Theory Weekly Seminar (TWS)-skyroom
Holographic quark matter with colour superconductivity in neutron stars


Abstract: There is a growing literature attempting to use holography to describe the equation of state (EoS) of deconfined quark matter to determine whether it can play a role in neutron star cores. Here we present a holographic model of QCD with a first order chiral restoration phase transition with chemical potential, . The first order behavior follows from allowing a discontinuity in the dual description as the quarks are integrated out below their constituent mass. The model predicts a deconfined yet massive quark phase at intermediate densities (350MeV< < 500MeV), above the nuclear density phase, which has a very stiff equation of sta ...