Leopold Infeld Colloquium
2006/2007 | 2007/2008 | 2008/2009 | 2009/2010 | 2010/2011 | 2011/2012 | 2012/2013 | 2013/2014 | 2014/2015 | 2015/2016 | 2016/2017 | 2017/2018
2010-04-22 (Thursday)
Nowa A(425), Hoża 69 at 15:30 
dr So Takei (Max Planck Institute for Solid State Research, Stuttgart)Nonequilibrium quantum criticality in single- and bi-layer itinerant electron ferromagnets
A scaling theory is presented for quantum criticality in an open(coupled to reservoirs) itinerant electron ferromagnet, withnonequilibrium drive provided by current flow across the system.Both departures from equilibrium at conventional (equilibrium)quantum critical points and the physics of phase transitionsinduced by the nonequilibrium drive are studied. The theory isextended for a coupled bilayer system of itinerant electronferromagnets in which one layer is driven out of equilibrium bycurrent flow along the system. We discuss the interplayof two different dynamical scales that arises in the presence oftwo bosonic fields, which are related to the magnetizationfluctuations of the two layers. In both systems, the resultsare presented for order parameters with Ising symmetry.
2010-04-08 (Thursday)
Nowa A(425), Hoża 69 at 15:30
prof. dr hab. Bohdan Grządkowski (IFT UW)Non-Supersymmetric New Physics at the Dawn of LHC
After introduction of the Standard Model (SM) for electro-weak interactionsI will discuss its drawbacks and possible improvementsthat could be tested at the Large Hadron Collider.I will focus on extensions of the scalar sector and on extra dimensionalmodels including large extra dimensions (ADD), the Randall-Sundrum modeland the gauge-Higgs unification
2010-03-25 (Thursday)
Nowa A(425), Hoża 69 at 15:30
Prof. Gerhard Huisken (Max Planck Institute for Gravitational Physics, Albert Einstein Institute)Geometric concepts for the mass in General Relativity
It is a major aim of mathematical relativity tofind and describe natural geometric structures that modelclassical physical concepts for isolated gravitating systems, such asmass, center of mass and momentum. The lecture explainshow suitable foliations of space-time and geometric variationalproblems such as the isoperimetric inequality can be usedto define a useful and geometrically invariant concept forthe total mass of a system. The lecture also describes howelliptic and parabolic systems of geometric PDEs are used tojustify these concepts in the context of Einsteins equations.