Seminars
The Institute for Theoretical Physics offers the following seminars:
Next seminars
ETH Zentrum HG G 43 - Thu 18.12.2014 15:15
The origin of the fermion mass hierarchy is one of the most compelling and mysterious questions for physics beyond the Standard Model. The discovery of neutrino oscillations and the subsequent measurements of the neutrino mass-squared differences and the lepton mixing angles over the past decade or so has reinvigorated the quest to elucidate the underlying physics that resolves this so-called "flavor puzzle" of the Standard Model. In this talk, I will give an overview of the theoretical approaches to the flavor puzzle, with a focus on the ways in which the neutrino mass and mixing parameters have challenged and extended the basic paradigms for understanding the origin of fermion masses in the Standard Model.
ETH Science City HPV G 4 - Wed 17.12.2014 16:15
A candidate description for a strange metal phase in 1+1 dimensions,
namely a model of strongly-coupled fermions in the adjoint representation of
SU(N) is considered. It is known that such models at high densities flow
to IR WZNW theories having an emergent $\mathcal{N}=(2,2)$ supersymmetry.
I describe the chiral ring of such theories and discuss its large N limit
ETH Science City HIT K 52 - Tue 16.12.2014 11:30
Fix a coisotropic submanifold C in a symplectic manifold. We consider the space of coisotropic submanifolds nearby C.
A natural geometric notion of equivalence there is given by Hamiltonian equivalence. On the other hand, there is algebraic characterization of the coisotropic submanifolds near C, as Maurer-Cartan elements of a certain L-infinity algebra introduced by Oh-Park in 2003, which gives rise to an algebraic equivalence. We show that both notions of equivalence agree.
Further, we carry out an analog discussion for the equivalence by symplectomorphisms, and present examples. This is joint work in progress with Florian Schätz (QGM Aarhus)
ETH Zentrum HG G 19.2 - Thu 11.12.2014 14:15
Silicon is evolving as a versatile photonic platform with multiple functionalities that can be seamlessly integrated. The tool box is rich starting from the ability to guide and amplify multiple wavelength sources at GHz bandwidths, to optomechanical MEMS and opto-fluidics devices. As an example of novel device capabilities, I will discuss the generation of strong optical forces in these ultra small light confining structures. We have recently shown that optical forces can enable controllable, static manipulation of photonic structures, an important step towards enabling recently proposed functionalities for optomechanical devices, such as self-aligning and optical corralling behaviour. These advances should enable future micro-optomechanical systems (MOMS) with novel and distinct functionalities.
ETH Science City HPV G 4 - Wed 10.12.2014 16:15