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Unparticles and Anomalous Dimensions in the Cuprates
Andreas Karch, Kridsanaphong Limtragool, Philip W. Phillips
Motivated by the overwhelming evidence some type of quantum criticality underlies the power-law for the optical conductivity and linear resistivity in the cuprates, we demonstr…
Holographic Black Hole Chemistry
Andreas Karch, Brandon Robinson
Thermodynamic quantities associated with black holes in Anti-de Sitter space obey an interesting identity when the cosmological constant is included as one of the dynamical variabl…
Spinor fields in general Newton-Cartan backgrounds
John F. Fuini, Andreas Karch, Christoph F. Uhlemann
We give a covariant construction of Lagrangians for spinor fields in generic Newton-Cartan backgrounds. A non-relativistic Dirac/Levy-Leblond operator and the associated fields are…
A Precision Test of AdS/CFT with Flavor
Andreas Karch, Brandon Robinson, Christoph F. Uhlemann
In this letter we put AdS/CFT dualities involving probe branes to a precision test. On the holographic side we use a new class of supersymmetric D7-brane embeddings into AdS$_5\tim…
Supersymmetric D3/D7 for holographic flavors on curved space
Andreas Karch, Brandon Robinson, Christoph F. Uhlemann
We derive a new class of supersymmetric D3/D7 brane configurations, which allow to holographically describe N=4 SYM coupled to massive N=2 flavor degrees of freedom on spaces of co…
Multiband models for field theories with anomalous current dimension
Andreas Karch
We give simple examples of weakly coupled or free quantum mechanical systems that exhibit scale invariance with an anomalous dimension for a conserved current. In these models scal…
Scaling theory of the cuprate strange metals
Sean A. Hartnoll, Andreas Karch
We show that the anomalous temperature scaling of five distinct transport quantities in the strange metal regime of the cuprate superconductors can be reproduced with only two nont…
Thermionic Emission and Negative dI/dV in Photoactive Graphene Heterostructures
J. F. Rodriguez-Nieva, M. S. Dresselhaus, L. S. Levitov
Transport in photoactive graphene heterostructures, originating from the dynamics of photogenerated hot carriers, is governed by the processes of thermionic emission, electron-latt…