IPM Calendar 
Thursday 27 February 2020   Today  
Events for day: Wednesday 18 September 2019    
           11:30 - 13:00     Defense Meeting
A comprehensive study of the color distributions of dwarf early-type galaxies


Defense Meeting ...

           14:00 - 16:00     Seminar
How can development of novel neuroimaging analysis techniques provide insights about human attention and perception


School of Cognitive Sciences, Institute for Research in Fundamental Sciences (IPM),
Opposite the ARAJ, Artesh Highway, Tehran, Iran on map

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           14:00 - 15:00     Weekly Seminar
Condensed Matter and Statistical Physics Group
Transport and Magnetic properties of Topological Insulator Thin films


Seminar Room (classroom A), Farmanieh Building, IPM ...

           14:00 - 15:00     Weekly Seminar
Transport and Magnetic properties of Topological Insulator Thin films


Transport and Magnetic properties of Topological Insulator Thin films


In this talk, we shortly review how topological insulators (TIs) were born by tracing topological invariants in the new members of Hall family such as quantum spin Hall (QSHE) and also quantum anomalous Hall effects (QAHE) and also introducing some important toy models such as Haldane and Kane-Mele models. Emergence of QAHE in magnetically doped TI thin films opens up some questions about the origin of such strong ferromagnetism observed in experiment and also their quantum transport properties. As the starting point, based on s ...

           15:00 - 17:00     Lecture
Model Theory of Adeles: Recent Developments


This is joint work with Angus Macintyre. I'll discuss the following topics:
1) Solution to a question of Ax (1968) asking whether the the theory of all the rings Z/mZ is ]decidable for all m>1. (Ax proved the special case when m runs through all the primes in his celebrated work on pseudo-finite fields).
2) An old question asking to what extent the adele ring of a number field determines the number field. It is known that it does not determine it in general up to isomorphism. We show that elementary equivalence of adele rings implies isomorphism.
3) An axiomatization of the theory of the adeles.
4) Connections ...

           15:00 - 16:00     Weekly Seminar
Generation of CMB circular polarization via Polarized Compton Scattering


Abstract: The standard scenario of cosmology which includes only Compton scattering predicts a measurable amount for the linear polarization of the cosmic microwave background (CMB) radiation, while trough this scenario there are no sources to generate circular polarization. The circular polarization of CMB has not been observed so far, however, it has not been completely excluded from observational evidence. On the other hand, over the last few years, many theoretical works have been done to investigate the generation of CMB circular polarization. In this paper, it is revealed that Compton scattering of CMB photons from polarized cosmic elec ...