| Speaker: | Andreas Karch (U. Washington) |
|---|---|
| Title: | Scaling laws for thermo-electric transport at quantum criticality |
| Date (JST): | Tue, Jun 30, 2015, 13:15 - 14:45 |
| Place: | Seminar Room A |
| Related File: | 1482.pdf |
| Abstract: | Transport properties at quantum critical points are strongly constrained by dimensional analysis. They are typically governed by two critical exponents: the dynamical critical exponent z determining the relative scaling of spatial and temporal coordinates and the hyperscaling violating exponent theta. We will show that in general response to electromagnetic fields requires a third exponent, an anomalous dimension for the coupling to background fields. We show that this exponent is generically non-zero in critical points constructed via holography and discuss its potential relevance to the physics of cuprates. |
