Self-bound droplet of Bose and Fermi atoms in one dimension: Collective properties in mean-field and Tonks-Girardeau regimes

Journal Article · Thu Feb 15 00:00:00 EST 2007 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.75.023616· OSTI ID:20982167

Salasnich, Luca ^[1]; Adhikari, Sadhan K ^[2]; Toigo, Flavio ^[3]

---

1. CNISM and CNR-INFM, Unita di Padova, Via Marzolo 8, 35131 Padova (Italy)
2. Instituto de Fisica Teorica, UNESP-Sao Paulo State University, 01.405-900 Sao Paulo, Sao Paulo (Brazil)
3. Dipartimento di Fisica 'G. Galilei' and CNISM, Universita di Padova, Via Marzolo 8, 35131 Padova (Italy)

We investigate a dilute mixture of bosons and spin-polarized fermions in one dimension. With an attractive Bose-Fermi scattering length the ground state is a self-bound droplet, i.e., a Bose-Fermi bright soliton where the Bose and Fermi clouds are superimposed. We find that the quantum fluctuations stabilize the Bose-Fermi soliton such that the one-dimensional bright soliton exists for any finite attractive Bose-Fermi scattering length. We study density profile and collective excitations of the atomic bright soliton showing that they depend on the bosonic regime involved: mean-field or Tonks-Girardeau.

• OSTI ID: 20982167
• Journal Information: Physical Review. A, Vol. 75, Issue 2; Other Information: DOI: 10.1103/PhysRevA.75.023616; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BOSE-EINSTEIN CONDENSATION
BOSONS
COLLECTIVE EXCITATIONS
DENSITY
DROPLETS
FERMIONS
FLUCTUATIONS
GROUND STATES
MEAN-FIELD THEORY
MIXTURES
ONE-DIMENSIONAL CALCULATIONS
SCATTERING LENGTHS
SOLITONS
SPIN ORIENTATION