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Enhanced thermoelectric response in the fractional quantum Hall effect
Pablo Roura-Bas, Liliana Arrachea, Eduardo Fradkin
We study the linear thermoelectric response of a quantum dot embedded in a constriction of a quantum Hall bar with fractional filling factors nu=1/m within Laughlin series. We calc…
Heat transport through quantum Hall edge states: Tunneling versus capacitive coupling to reservoirs
H. Aita, L. Arrachea, C. Naón +1
We study the heat transport along an edge state of a two-dimensional electron gas in the quantum Hall regime, in contact to two reservoirs at different temperatures. We consider tw…
The Renyi Entropy and the Multifractal Spectrum of Systems Near the Localization Transition
Xiao Chen, Benjamin Hsu, Taylor L. Hughes +1
We show that the Rényi entropies of single particle, extended wave functions for disordered systems contain information about the multifractal spectrum. It is shown for moments of…
Chiral heat transport in driven quantum Hall and quantum spin Hall edge states
Liliana Arrachea, Eduardo Fradkin
We consider a model for an edge state of electronic systems in the quantum Hall regime with filling and in the quantum spin Hall regime. In both cases the system is in contac…
Torsional Response and Dissipationless Viscosity in Topological Insulators
Taylor L. Hughes, Robert G. Leigh, Eduardo Fradkin
We consider the visco-elastic response of the electronic degrees of freedom in 2D and 3D topological insulators (TI). Our primary focus is on the 2D Chern insulator which exhibits…
Quantum noise and entanglement generated by a local quantum quench
Benjamin Hsu, Eytan Grosfeld, Eduardo Fradkin
We examine the growth of entanglement under a quantum quench at point contacts of simple fractional quantum Hall fluids and its relation with the measurement of local observables.…
Fractional statistics and duality: strong tunneling behavior of edge states of quantum Hall liquids in the Jain sequence
Claudio Chamon, Eduardo Fradkin, Ana Lopez
While the values for the fractional charge and fractional statistics coincide for fractional Hall (FQH) states in the Laughlin sequence, they do not for more general FQH states, su…
Measuring fractional charge and statistics in fractional quantum Hall fluids through noise experiments
Eun-Ah Kim, Michael J. Lawler, Smitha Vishveshwara +1
A central long standing prediction of the theory of fractional quantum Hall (FQH) states that it is a topological fluid whose elementary excitations are vortices with fractional ch…
Signatures of fractional statistics in noise experiments in quantum Hall fluids
Eun-Ah Kim, Michael Lawler, Smitha Vishveshwara +1
The elementary excitations of fractional quantum Hall (FQH) fluids are vortices with fractional statistics. Yet, this fundamental prediction has remained an open experimental chall…
Quantum Hall line junction with impurities as a multi-slit Luttinger liquid interferometer
I. Yang, W. Kang, L. N. Pfeiffer +4
We report on quantum interference between a pair of counterpropagating quantum Hall edge states that are separated by a high quality tunnel barrier. Observed Aharonov-Bohm oscillat…
Quantum Hall Smectics, Sliding Symmetry and the Renormalization Group
Michael J. Lawler, Eduardo Fradkin
In this paper we discuss the implication of the existence of a sliding symmetry, equivalent to the absence of a shear modulus, on the low-energy theory of the quantum hall smectic…
Cooper pair tunneling in junctions of singlet quantum Hall states and superconductors
Eun-Ah Kim, Smitha Vishveshwara, Eduardo Fradkin
We propose tunnel junctions of a Hall bar and a superconducting lead, for observing Cooper-pair tunneling into singlet fractional quantum Hall edge states. These tunnel junctions p…
Fermion Chern Simons Theory of Hierarchical Fractional Quantum Hall States
Ana Lopez, Eduardo Fradkin
We present an effective Chern-Simons theory for the bulk fully polarized fractional quantum Hall (FQH) hierarchical states constructed as daughters of general states of the Jain se…
Double point contact in Quantum Hall Line Junctions
Eun-Ah Kim, Eduardo Fradkin
We show that multiple point contacts on a barrier separating two laterally coupled quantum Hall fluids induce Aharonov-Bohm (AB) oscillations in the tunneling conductance. These qu…
Non-commutative Chern-Simons for the Quantum Hall System and Duality
Eduardo Fradkin, Vishnu Jejjala, Robert G. Leigh
The quantum Hall system is known to have two mutually dual Chern-Simons descriptions, one associated with the hydrodynamics of the electron fluid, and another associated with the s…
Inter edge Tunneling in Quantum Hall Line Junctions
Eun-Ah Kim, Eduardo Fradkin
We propose a scenario to understand the puzzling features of the recent experiment by Kang and coworkers on tunneling between laterally coupled quantum Hall liquids by modeling the…
Theory of the Quantum Hall Smectic Phase II: Microscopic Theory
Daniel G. Barci, Eduardo Fradkin
We present a microscopic derivation of the hydrodynamic theory of the Quantum Hall smectic or stripe phase of a two-dimensional electron gas in a large magnetic field. The effectiv…
Theory of the Quantum Hall Smectic Phase, I: Low Energy Properties of the Quantum Hall Smectic Fixed Point
Daniel G. Barci, Eduardo Fradkin, Steven A. Kivelson +1
We develop an effective low energy theory of the Quantum Hall (QH) Smectic or stripe phase of a two-dimensional electron gas in a large magnetic field in terms of its Goldstone mod…
Effective Chern-Simons Theories of Pfaffian and Parafermionic Quantum Hall States, and Orbifold Conformal Field Theories
Eduardo Fradkin, Marina Huerta, Guillermo Zemba
We present a pure Chern-Simons formulation of families of interesting Conformal Field Theories describing edge states of non-Abelian Quantum Hall states. These theories contain two…
Fractional quantum Hall junctions and two-channel Kondo models
N. Sandler, E. Fradkin
A mapping between fractional quantum Hall (FQH) junctions and the two-channel Kondo model is presented. We discuss in detail this relation for the particular case of a junction of…
Effective field theory for the bulk and edge states of quantum Hall states in unpolarized single layer and bilayer systems
Ana Lopez, Eduardo Fradkin
We present an effective theory for the bulk Fractional Quantum Hall states in spin-polarized bilayer and spin-1/2 single layer two-dimensional electron gases (2DEG) in high magneti…
Nematic phase of the two-dimensional electron gas in a magnetic field
Eduardo Fradkin, Steven A. Kivelson, Efstratios Manousakis +1
The two dimensional electron gas (2DEG) in moderate magnetic fields in ultra-clean AlAs-GaAs heterojunctions exhibits transport anomalies suggestive of a compressible, anisotropic…
Exploring the fractional quantum Hall effect with electron tunneling
Eduardo Fradkin
In this talk I present a summary of recent work on tunnel junctions of a fractional quantum Hall fluid and an electron reservoir, a Fermi liquid. I consider first the case of a sin…
Non-Abelian fractional quantum Hall states and chiral coset conformal field theories
D. C. Cabra, E. Fradkin, G. L. Rossini +1
We propose an effective Lagrangian for the low energy theory of the Pfaffian states of the fractional quantum Hall effect in the bulk in terms of non-Abelian Chern-Simons (CS) acti…