# Active Gauge - Explore the Science & Experts | ideXlab

## Active Gauge

The Experts below are selected from a list of 48 Experts worldwide ranked by ideXlab platform

### Oliver Dewolfe – One of the best experts on this subject based on the ideXlab platform.

• ##### fermi surfaces in n 4 super yang mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, C A Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

• ##### Fermi surfaces in N = 4 super-Yang-Mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, Christopher Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

### C A Rosen – One of the best experts on this subject based on the ideXlab platform.

• ##### fermi surfaces in n 4 super yang mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, C A Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

### Christopher Rosen – One of the best experts on this subject based on the ideXlab platform.

• ##### Fermi surfaces in N = 4 super-Yang-Mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, Christopher Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

### Steven S Gubser – One of the best experts on this subject based on the ideXlab platform.

• ##### fermi surfaces in n 4 super yang mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, C A Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

• ##### Fermi surfaces in N = 4 super-Yang-Mills theory
Physical Review D, 2012
Co-Authors: Oliver Dewolfe, Steven S Gubser, Christopher Rosen
Abstract:

We investigate and classify Fermi surface behavior for a set of fermionic modes in a family of backgrounds holographically dual to $\mathcal{N}=4$ super-Yang-Mills theory at zero temperature with two distinct chemical potentials. We numerically solve fluctuation equations for every spin-$1/2$ field in five-dimensional maximally supersymmetric Gauged supergravity not mixing with gravitini. Different modes manifest two, one, or zero Fermi surface singularities, all associated with non-Fermi liquids, and we calculate dispersion relations and widths of excitations. We study two limits where the zero-temperature entropy vanishes. In one limit, a Fermi surface approaches a marginal Fermi liquid, which we demonstrate analytically, and conductivity calculations show a hard gap with the current dual to the Active Gauge field superconducting, while the other is insulating. In the other limit, conductivities reveal a soft gap with the roles of the Gauge fields reversed.

, 2020