TY - GEN
T1 - Theory of photoemission-type experiment in the BCS-BEC crossover regime of a superfluid Fermi gas
AU - Watanabe, Ryota
AU - Tsuchiya, Shunji
AU - Ohashi, Yoji
PY - 2011
Y1 - 2011
N2 - We theoretically investigate the recent photoemission-type experiment on 40K Fermi gases done by JILA group. Including pairing fluctuations within a strong-coupling T-matrix theory, as well as effects of a harmonic trap within the local density approximation, we calculate photoemission spectra in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover region. We show that the energy resolution of the current photoemission experiment is enough to detect the pseudogap phenomenon. We also show how the pseudogap in single-particle excitations continuously changes into the superfluid gap, as one decreases the temperature below the superfluid phase transition temperature. Our results would be useful for the study of single-particle properties of ultracold Fermi gases in the BCS-BEC crossover.
AB - We theoretically investigate the recent photoemission-type experiment on 40K Fermi gases done by JILA group. Including pairing fluctuations within a strong-coupling T-matrix theory, as well as effects of a harmonic trap within the local density approximation, we calculate photoemission spectra in the BCS (Bardeen-Cooper-Schrieffer)-BEC (Bose-Einstein condensation) crossover region. We show that the energy resolution of the current photoemission experiment is enough to detect the pseudogap phenomenon. We also show how the pseudogap in single-particle excitations continuously changes into the superfluid gap, as one decreases the temperature below the superfluid phase transition temperature. Our results would be useful for the study of single-particle properties of ultracold Fermi gases in the BCS-BEC crossover.
KW - Atomic Fermi Gas
KW - Pseudogap
KW - Superfluidity
UR - http://www.scopus.com/inward/record.url?scp=80051814770&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80051814770&partnerID=8YFLogxK
U2 - 10.1109/ISAS.2011.5960915
DO - 10.1109/ISAS.2011.5960915
M3 - Conference contribution
AN - SCOPUS:80051814770
SN - 9781457707179
T3 - Proceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011
SP - 26
EP - 31
BT - Proceedings of 2011 1st International Symposium on Access Spaces, ISAS 2011
T2 - 2011 1st International Symposium on Access Spaces, ISAS 2011
Y2 - 17 June 2011 through 19 June 2011
ER -