R. G. Herb Condensed Matter Seminars |
Events During the Week of January 31st through February 7th, 2016
Monday, February 1st, 2016
- No events scheduled
Tuesday, February 2nd, 2016
- No events scheduled
Wednesday, February 3rd, 2016
- No events scheduled
Thursday, February 4th, 2016
- TBD
- Time: 10:00 am - 11:00 am
- Place: Chamberlin 5310
- Speaker: Ivar Martin, Argonne National Laboratory
- Abstract: TBD
- Host: Vavilov
- TBD
- Time: 10:00 am - 11:00 am
- Place: Chamberlin 5310
- Speaker: Ivar Martin, Argonne National Laboratory
- Abstract: TBD
- Host: Vavilov
- Dynamics of interacting disordered quantum spin systems
- Time: 10:00 am
- Place: 5310 Chamberlin
- Speaker: Ivar Martin, Argonne National Laboratory
- Abstract: Localized paramagnetic electrons are believed to be the cause of magnetic flux noise that plagues superconducting qubits; however, how such interacting spins generate frequency dependent noise of the 1/f form is not well understood due to the complexity of the full quantum mechanical treatment of interacting spin system. In this talk I will describe a dynamical real space renormalization group (RG) procedure that allows to calculate directly various dynamical quantities in a strongly disordered Heisenberg spin systems. Using this approach we generally find the dynamics that correspond to (anomalous) spin subdiffusion, with a powerlaw low-frequency magnetic noise, which appears to be consistent with what is observed in superconducting circuits.
- Host: Vavilov
Friday, February 5th, 2016
- No events scheduled