Detecting D-Wave Pairing and Collective Modes in Fermionic Condensates with Bragg Scattering

TL;DR

This paper proposes using Bragg scattering to detect d-wave pairing and collective modes in fermionic condensates, offering a new way to analyze nontrivial correlations beyond traditional density imaging.

Contribution

It introduces a method to identify d-wave pairing and collective excitations in fermionic superfluids through inelastic light scattering measurements.

Findings

Bragg scattering intensity reveals d-wave pairing signatures.

Spin susceptibility measurements can detect collective modes.

The approach provides a new tool for analyzing fermionic condensates.

Abstract

We show how the appearance of d-wave pairing in fermionic condensates manifests itself in inelastic light scattering. Specifically, we calculate the Bragg scattering intensity from the dynamic structure factor and the spin susceptibility, which can be inferred from spin flip Raman transitions. This information provides a precise tool with which we can identify nontrivial correlations in the state of the system beyond the information contained in the density profile imaging alone. Due to the lack of Coulomb effects in neutral superfluids, this is also an opportunity to observe the Anderson-Bogoliubov collective mode.