112 citations · 635 across the 31 of their papers we have counts for
20 papers · 1 filter
Local density of states of the interacting resonant level model at zero temperature
Gonzalo Camacho, Peter Schmitteckert, Sam T. Carr
We present results of the impurity local density of states of the interacting resonant level model at zero temperature. We concentrate on low-energy properties and predominantly us…
Exact equilibrium results in the Interacting Resonant Level Model
Gonzalo Camacho, Peter Schmitteckert, Sam T. Carr
We present exact results for the susceptibility of the interacting resonant level model in equilibrium. Detailed simulations using both the Numerical Renormalization Group and Dens…
Interplay between intrinsic and emergent topological protection on interacting helical modes
Raul A. Santos, D. B. Gutman, Sam T. Carr
The interplay between topology and interactions on the edge of a two dimensional topological insulator with time reversal symmetry is studied. We consider a simple non-interacting…
Transmission through a potential barrier in Luttinger liquids with a topological spin gap
N. Kainaris, S. T. Carr, A. D. Mirlin
We study theoretically the transport of the one-dimensional single-channel interacting electron gas through a strong potential barrier in the parameter regime where the spin sector…
Effect of paramagnetic fluctuations on a Fermi surface topological transition in two dimensions
Sergey Slizovskiy, Joseph J. Betouras, Sam T. Carr +1
We study the Fermi surface topological transition of the pocket-opening type in a two dimensional Fermi liquid. We find that the paramagnetic fluctuations in an interacting Fermi l…
Superfluid-Insulator transition of quantum Hall domain walls in bilayer graphene
Victoria Mazo, Chia-Wei Huang, Efrat Shimshoni +2
We consider the zero-filled quantum-Hall ferromagnetic state of bilayer graphene subject to a kink-like perpendicular electric field, which generates domain walls in the electronic…
Transport via double constrictions in integer and fractional topological insulators
Chia-Wei Huang, Sam T. Carr, Dmitri Gutman +2
We study transport properties of the helical edge states of two-dimensional integer and fractional topological insulators via double constrictions. Such constrictions couple the up…
Spinful fermionic ladders at incommensurate filling: Phase diagram, local perturbations, and ionic potentials
Sam T. Carr, Boris N. Narozhny, Alexander A. Nersesyan
We study the effect of external potential on transport properties of the fermionic two-leg ladder model. The response of the system to a local perturbation is strongly dependent on…
Weak localization and magnetoresistance in a two-leg ladder model
Michael P. Schneider, Sam T. Carr, Igor V. Gornyi +1
We analyze the weak localization correction to the conductivity of a spinless two-leg ladder model in the limit of strong dephasing τ_ϕ<< τ_tr, paying particular attention to the p…
Unbinding of giant vortices in states of competing order
Jonathan M. Fellows, Sam T. Carr, Christopher A. Hooley +1
We consider a two-dimensional system with two order parameters, one with O(2) symmetry and one with O(), near a point in parameter space where they couple to become a single O($…
Full counting statistics in the self-dual interacting resonant level model
Sam T. Carr, Dmitry A. Bagrets, Peter Schmitteckert
We present a general technique to obtain the zero temperature full counting statistics of charge transfer in interacting impurity models out of equilibrium from time-dependent simu…
The effect of a local perturbation in a fermionic ladder
Sam T. Carr, Boris N. Narozhny, Alexander A. Nersesyan
We study the effect of a local external potential on a system of two parallel spin-polarized nanowires placed close to each other. For single channel nanowires with repulsive inter…
Lifshitz transitions and crystallization of fully-polarised dipolar Fermions in an anisotropic 2D lattice
Sam T. Carr, Jorge Quintanilla, Joseph J. Betouras
We consider a two dimensional model of non-interacting chains of spinless fermions weakly coupled via a small inter-chain hopping and a repulsive inter-chain interaction. The phase…
Deconfinement and quantum liquid crystalline states of dipolar fermions in optical lattices
Sam T. Carr, Jorge Quintanilla, Joseph J. Betouras
We describe a simple model of fermions in quasi-one dimension that features interaction induced deconfinement (a phase transition where the effective dimensionality of the system i…
Strong correlation effects in single-wall carbon nanotubes
Sam T. Carr
We present an overview of strong correlations in single-wall carbon nanotubes, and an introduction to the techniques used to study them theoretically. We concentrate on zigzag nano…
Interaction induced dimerization in zigzag single wall carbon nanotubes
Sam T. Carr, Alexander O. Gogolin, Alexander A. Nersesyan
We derive a low-energy effective model of metallic zigzag carbon nanotubes at half filling. We show that there are three important features characterizing the low-energy properties…
Spinless Fermionic ladders in a magnetic field: Phase Diagram
Sam T. Carr, Boris N. Narozhny, Alexander A. Nersesyan
The system of interacting spinless fermions hopping on a two-leg ladder exhibits a series of quantum phase transitions when subjected to an external magnetic field. At half filling…
Fractional charge excitations in fermionic ladders
B. N. Narozhny, S. T. Carr, A. A. Nersesyan
The system of interacting spinless fermions hopping on a two-leg ladder in the presence of an external magnetic field is shown to possess a long range order: the bond density wave…
Spectrum and correlation functions of a quasi-one-dimensional quantum Ising model
Sam T. Carr, Alexei M. Tsvelik
We consider a model of weakly coupled quantum Ising chains. We describe the phase diagram of such a model and study the dynamical magnetic susceptibility by means of Bethe ansatz a…
Superconductivity and Charge Density Wave in a Quasi-One-Dimensional Spin Gap System
Sam T. Carr, Alexei M. Tsvelik
We consider a model of spin-gapped chains weakly coupled by Josephson and Coulomb interactions. Combining such non-perturbative methods as bosonization and Bethe ansatz to treat th…