COOKIES: By using this website you agree that we can place Google Analytics Cookies on your device for performance monitoring. |

University of Cambridge > Talks.cam > Quantum Fields and Strings Seminars > Incoherent transport in clean quantum critical metals

## Incoherent transport in clean quantum critical metalsAdd to your list(s) Download to your calendar using vCal - Blaise Goutéraux
- Thursday 17 December 2015, 13:00-14:00
- Potter Room (first floor, Pav. B).
If you have a question about this talk, please contact Dr. Piotr Tourkine. In a clean quantum critical metal, and in the absence of umklapp, most d.c. conductivities are formally infinite due to momentum conservation. However, there is a particular combination of the charge and heat currents which has a finite, universal conductivity. In this talk, I will describe the physics of this conductivity in quantum critical metals obtained by charge doping a strongly interacting conformal field theory. I will show that it satisfies an Einstein relation and controls the diffusivity of a conserved charge in the metal. I will compute it in a class of theories with holographic gravitational duals. Finally, I will show how its temperature scaling of depends on certain critical exponents characterizing the quantum critical metal. The holographic results are found to be reproduced by the scaling analysis, with the charge density operator becoming marginal in the emergent low energy quantum critical theory. This talk is part of the Quantum Fields and Strings Seminars series. ## This talk is included in these lists:- All CMS events
- CMS Events
- DAMTP info aggregator
- HEP web page aggregator
- Potter Room (first floor, Pav. B)
- Quantum Fields and Strings Seminars
- bld31
Note that ex-directory lists are not shown. |
## Other listsRelocating Human Origins - What if Adam lived in the forest? Photonics Summer Seminars 2017 Type the title of a new list here## Other talksNeurodevelopment disorders of genetic origin – what can we learn? Light Scattering techniques Tracking neurobiological factors of language developmental difficulties Radiocarbon as a carbon cycle tracer in the 21st century Emergence in Physics: Life, the Universe and the Nature of Reality I And You: Documentary As Encounter |