61 citations · 269 across the 10 of their papers we have counts for
10 papers
Test for BCS-BEC Crossover in the Cuprate Superconductors
Qijin Chen, Zhiqiang Wang, Rufus Boyack +1
In this paper we address the question of whether high-temperature superconductors have anything in common with BCS-BEC crossover theory. Towards this goal, we present a proposal an…
When Superconductivity Crosses Over: From BCS to BEC
Qijin Chen, Zhiqiang Wang, Rufus Boyack +2
New developments in superconductivity, particularly through unexpected and often astonishing forms of superconducting materials, continue to excite the community and stimulate theo…
Unified treatment of Fermi pockets and arcs scenarios for the cuprates: Sum rule consistent response functions of the pseudogap
Peter Scherpelz, Adam Rançon, Yan He +1
Essential to understanding the cuprate pseudogap phase is a study of the charge (and spin) response functions, which we address here via a consistent approach to the Fermi arcs and…
Establishing Conservation Laws in Pair Correlated Many Body theories: T matrix Approaches
Yan He, K. Levin
We address conservation laws associated with current, momentum and energy and show how they can be satisfied within many body theories which focus on pair correlations. Of interest…
Theory of Fluctuating Charge Ordering in the Pseudogap Phase of the Cuprates Via A Preformed Pair Approach
Yan He, Peter Scherpelz, K. Levin
We study the static and dynamic behavior of charge ordering within a d-wave pair pseudogap (pg) scenario. This is addressed using a density-density correlation function derived fro…
A Two Energy Gap Preformed-Pair Scenario For the Cuprates: Implications for Angle-Resolved Photoemission Spectroscopy
Chih-Chun Chien, Yan He, Qijin Chen +1
We show how, within a preformed pair scenario for the cuprate pseudogap, the nodal and antinodal responses in angle resolved photoemission spectroscopy necessarily have very differ…
Theory of Radio Frequency Spectroscopy Experiments in Ultracold Fermi Gases and Their Relation to Photoemission Experiments in the Cuprates
Qijin Chen, Yan He, Chih-Chun Chien +1
In this paper we present an overview of radio frequency (RF) spectroscopy in the atomic Fermi superfluids. An ultimate goal is to suggest new directions in the cold gas research ag…
Temperature and final state effects in radio frequency spectroscopy experiments on atomic Fermi gases
Yan He, Chih-Chun Chien, Qijin Chen +1
We present a systematic characterization of the radio frequency (RF) spectra of homogeneous, paired atomic Fermi gases at finite temperatures, , in the presence of final state i…
Radio Frequency Spectroscopy of Trapped Fermi Gases with Population Imbalance
Yan He, Chih-Chun Chien, Qijin Chen +1
Motivated by recent experiments, we address, in a fully self consistent fashion, the behavior and evolution of radio frequency (RF) spectra as temperature and polarization are vari…
Superfluid phase diagrams of trapped Fermi gases with population imbalance
Chih-Chun Chien, Qijin Chen, Yan He +1
We present phase diagrams for population imbalanced, trapped Fermi superfluids near unitarity. In addition to providing quantitative values for the superfluid transition temperatur…